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Research Alliance Laboratories

JEOL YOKOGUSHI Research Alliance Laboratories

SA Prof. NAMBA Keiichi SA Prof. NAMBA Keiichi

Keywords:

Cryo-electron microscopy, Supramolecular three-dimensional structure, Flagellar motor, Protein transport, Muscle contraction, Nano-machine

Development of structural biosciences by electron cryomicroscopy

Cell motility and protein export are basic cellular activities driven by intricate mechanisms of self-assembling macromolecular nanomachines by their conformational switching, force generation and energy transduction. These dynamic nanomachines are built up with individual atoms as functional parts and therefore work at very high precision and even at an energy level of thermal noise. We develop techniques of electron cryomicroscopy to analyze the structures and dynamics of these nanomachines to unravel their basic mechanisms, which will hopefully lead to bionanotechnology applications, such as design of new drugs and useful nanodevices.

(Left) Many bacteria move by rotating flagella as helical propellers with rotary motors at their base at around 20,000 rpm. The flagella grow at the distal tip by self-assembly of proteins translocated there by the flagellar protein export apparatus. (Right) Electron cryomicroscopy is becoming a powerful tool for biological sciences as it can visualize the 3D structures and conformational changes of macromolecular nanomachines, such as flagella and actin filaments, in their functional forms without crystallization.

Members

Keiichi Namba (Specially Appointed Professor) namba.keiichi.fbs[at]osaka-u.ac.jp
Tomoko Miyata (Specially Appointed Associate Professor) t.miyata.fbs[at]osaka-u.ac.jp
Miki Kinoshita (Specially Appointed Assistant Professor) kinoshita.miki.fbs[at]osaka-u.ac.jp
Kazuki Kasai (Specially Appointed Researcher)  
Yuuki Shimokawa (Specially Appointed Researcher)  
Yasuyo Abe (Technical Staff)  
Tohru Minamino (Guest Professor)  
Fumiaki Makino (Guest Associate Professor)  
Kana Moriya (Guest Researcher)  

You could probably reach more information of individual researchers by Research Map and researcher's search of Osaka-U.

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Q&A

What are the findings of NAMBA Protonic Nanomachine Project (ERATO)?
https://www.fbs.osaka-u.ac.jp/labs/namba/npn/index.html

Research Highlights

Publications (Research Articles, Reviews, Books)

2026

Sakai, M., Kinoshita, M., Takekawa, N., Namba, K., Imada, K. & Minamino, T.

Structural basis for substrate specificity switching revealed by the FlhA(A489E) suppressor mutation

Biophys. Physicobiol. in press  2026 ( DOI:10.2142/biophysico.bppb-v23.0030)

Nakamura, S., Morimoto, Y.V., Kami-ike, N., Minamino, T. & Namba, K.

Thermal fractuations assist high-speed rotation of the bacterial flagellar motor at low load

bioRxiv   2026 ( DOI:10.64898/2026.09.09.750262)

Kinoshita, M., Kawamoto, A., Namba, K. & Minamino, T.

Dynamic topological remodeling underlies assembly of the flagellar protein-export channel FliPQR complex

Commun. Biol. in press  2026 ( DOI:10.1038/s42003-026-10745-4)

Chevance, Y., Kinoshita, M., Chevance, F.F.V., Minamino, T., Namba, K. & Hughes, K.T.

FlgJ cell-wall hydrolyzing activity enhances but is not required for flagellum assembly in Salmonella enterica

J. Bacteriol. in press  2026 ( DOI:10.1128/jb.00238-26)

Yamaguchi, T., Minamino, T., Kato, T., Chevance, F.F.V., Hughes, K.T. & Namba, K.

Structural insights into the assembly mechanism of the molecular bushing in the bacterial flagellar motor

Commun. Biol. in press  2026 ( DOI:10.1038/s42003-026-10640-y )

Taguchi, A., Fujita, J., Takaya, D., Harada, K., Moriya, T., Fukuzawa, K., Namba, K. & Nishino, K.

Structural insights into fosfomycin efflux by a streptococcal ABC transporter

PNAS 123(35), e2535933123  2026 (PMID:42664038 DOI:10.1073/pnas.2535933123)

Imai, H., Kanazawa, R., Maeshima, T., Tran, D.P., Shimo-Kon, R., Tokita, H., Miyata, T., Makino, F., Fujita, J., Kato, T., Kitao, A., Namba, K. & Kon, T.

ADP-Bound States of Cytoplasmic Dynein: Cryo-electron Microscopy Reveals a Two-Step Post-Power-Stroke Transition and Roles of Regulatory ATPase Sites

J. Mol. Biol. 438, 169977  2026 (PMID:42562341 DOI:10.1016/j.jmb.2026.169977)

Yamori, W., Nakazato, I., Qu, Y., Sanga, Y., Miyata, T., Uehara, R., Noto, Y., Namba, K., Fukayama, H., Matsumura, H. & Arimura, S.

Chloroplast genome editing of Rubisco boosts photosynthesis and plant growth

Nat. Commun. 17, 5066  2026 (PMID:42321205 DOI:10.1038/s41467-026-73783-w)

Kasai, K., Imamura, K., Uno, M., Nukui, S., Sekiyama, N., Miyata, T., Makino, F., Yamada, R., Takahashi, Y., Kodera, N., Namba, K., Ohnishi, H., Narita, A., Konno, H. & Tochio, H.

Structural mechanism of receptor-triggered MyD88 oligomeric assembly in innate immune signaling

Nat. Commun. 17, 5364  2026 (PMID:41997963 DOI:10.1038/s41467-026-71836-8)

Chevance, F.F.V., Niketic, D., Wu, D., Mellor, C.T., Blair, D.F., Casjens, S.R., Kinoshita, M., Namba, K., Minamino, T. & Hughes, K.T.

Active removal of inhibitory components drives the flagellar type 3 secretion-specificity switch

mBio e0103726  2026 (PMID:42262106 DOI:10.1128/mbio.01037-26)

Wei, S., Miyata, T., Makino, F., Namba, K., Liu, C., Niu, Y., Saito, S., Okuda, S., Tsutsumi, K., Okamoto, K., Suzuki, M., Kitamura, T., Masajin, K., Kokuho, T., Itoh, H. & Nagata, K.

African swine fever virus protein pB602L is a unique molecular chaperone promoting the folding of the major capsid protein p72 and the polyprotein processing protease pS273R

Int. J. Biol. Macromol. 347, 150685  2026 (PMID:41643972 DOI:10.1016/j.ijbiomac.2026.150685)

Kinoshita, M., Minamino, T., Terashima, H., Kasai, K. & Namba, K.

Structure of an active FlhA ring reveals allosteric coupling between substrate specificity and export engine activation

bioRxiv   2026 ( DOI:10.64898/2026.05.29.728899)

Kinoshita, M., Minamino, T., Sakai, M., Takekawa, N., Uchihashi, T., Kitao, A., Imada, K. & Namba, K.

A single conserved residue in FlhA couples export gate activation to substrate specificity switching

bioRxiv   2026 ( DOI:10.64898/2026.05.20.726703)

Minamino, T., Kinoshita, M., Tajimi, Y., Uchihashi, T. & Namba, K.

Uncoupling subtrate delivery from export gate activation reveals distinct roles of the flagellar ATPase complex

Front. Microbiol. 17:1841110  2026 (PMID:42254510 DOI:10.3389/fmicb.2026.1841110)

Makino, F., Yanagisawa, H., Eisenstein, F., Miyata, T., Kinoshita, M., Kikkawa, M. & Namba, K.

Subtomogram averaging by cryo-electron tomography using CRYO ARMTM 300 II for purified and cellular samples

AIMS Biophysics 13, 131-142  2026 ( DOI:10.3934/biophy.2026008)

Ichikawa, K., Adachi, T., Miyata, T., Makino, F., Namba, K., Kitazumi, Y., Shirai, O. & Sowa, K.

Structure-guided engineering of membrane-binding regions for surfactant-free solubilization of direct electron transfer-type alcohol dehydrogenase.

Chem. Commun. 62, 7948-7952  2026 (PMID:41853871 DOI:10.1039/D6CC00143B)

2025

Inaoka, D., Miyata, T., Makino, F., Ohtani, Y., Ekari, M., Kobayashi, R., Imamura, K., Sakamoto, E., Kodama, T.S., Yoshida, N., Kato, T., Namba, K., Tochio, H. & Sekiyama, N.

Structural basis for T-cell intracellular antigen-1 amyloid fibril formation revealed by cryo-electron microscopy

PNAS Nexus 4, pgaf388  2025 (PMID:41446360 DOI:10.1093/pnasnexus/pgaf388)

Seki, S., Cupellini, L., Bina, D., Betti, E., Urajova, P., Tanaka, H., Miyata, T., Namba, K., Kurisu, G., Polivka, T., Litvin, R. & Fujii, R.

Exciton delocalization promotes far-red absorption in a tetrameric chlorophyll a light-harvesting complex from Trachydiscus minutus

J. Am. Chem. Soc. 147, 47675-47689  2025 (PMID:41388986 DOI:10.1021/jacs.5c17299)

Seki, S., Kubota, M., Yamano, N., Kim, E., Ishii, A., Miyata, T., Tanaka, H., Cogdell, R.J., Zhang, J.-P., Namba, K., Kurisu, G., Minagawa, J. & Fujii, R.

Distinctive and functional pigment arrangements in Lhcp, a prasinophyte-specific photosynthetic light-harvesting complex

Commun. Biol. 8, 1586  2025 (PMID:41249568 DOI:10.1038/s42003-025-08977-x)

Kinoshita, M., Miyata, T., Makino, F., Imada, K., Namba, K. & Minamino, T.

A β-cap on the FliPQR protein-export channel acts as the cap for initial flagellar rod assembly

PNAS 122, e2507221122  2025 (PMID:40833400 DOI:10.1073/pnas.2507221122)

Miki, T., Kurihara, S., Uematsu, T., Ami, Y., Ito, M., Haneda, T., Furuchi, T., Okada, N., Minamino, T. & Kim, Y.-G.

Intestinal luminal polyamines support the gut colonization of enteric bacterial pathogens by modulating flagellar motility and nitrate respiration

mBio 16, e01786-25  2025 (PMID:40787976 DOI:10.1128/mbio.01786-25)

Wu, H.-N., Fujita, J., Nakura, Y., Inoue, M., Suzuki, K., Ekimoto, T., Yin, B., Fukuda, Y., Harada, K., Inoue, T., Ikeguchi, M., Namba, K. & Yanagihara, I.

Structural analysis and molecular DynamicsSimulations of urease from Ureaplasma parvum

J. Mol. Biol. 437, 169368  2025 (PMID:40752870 DOI:10.1016/j.jmb.2025.169368)

Otsuki, T., Matsumoto, S., Fujita, J., Miyata, T., Namba, K., Kanada, R., Okuno, Y., Kamada, H., Ohno, H. & Akiba, H.

Conversion of an agonistic anti-TNFR2 biparatopic antibody into an antagonist by insertion of peptide linkers into the hinge region

J. Biol. Chem. 301, 110548  2025 (PMID:40752574 DOI:10.1016/j.jbc.2025.110548)

Adachi, T., Ichikawa, K., Miyata, T., Makino, F., Tanaka, H., Namba, K. & Sowa, K.

Improved direct bioelectrochemical fructose oxidation with surfactant-free heterotrimeric fructose dehydrogenase variant truncating heme 1c and C-terminal hydrophobic regions.

ACS Electrochemistry 1, 1649-1658  2025 ( DOI:10.1021/acselectrochem.5c00106)

Fujita, J., Kasai, K., Hibino, K., Kagoshima, G., Kamimura, K., Tobita, S., Kato, Y., Uehara, R., Namba, K., Uchihashi, T. & Matsumura, H.

Structural basis for the interaction between the bacterial cell division proteins FtsZ and ZapA.

Nat. Commun. 16, 5985  2025 (PMID:40593603 DOI:10.1038/s41467-025-60940-w)

Vizarraga, D., Kawamoto, A., Marcos-Silva, M., Martin, J., Makino, F., Miyata, T., Roel-Touris, J., Marcos, E., Pich, O.Q., Aparicio, D., Fita, I., Miyata, M., Pinol, J., Namba, K. & Kenri, T.

Dynamics of the adhesion complex of the human pathogens Mycoplasma pneumoniae and Mycoplasma genitalium.

PLOS Pathogens 21(3): e1012973  2025 (PMID:40153444 DOI:10.1371/journal.ppat.1012973)

Onoe, S., Nishikino, T., Kinoshita, M., Takekawa, N., Minamino, T., Imada, K., Namba, K. Kishikawa, J. & Kato, T.

Cryo-EM structure of the flagellar motor complex from Paenibacillus sp. TCA20.

Biomolecules 15, 435  2025 (PMID:40149971 DOI:10.3390/biom15030435)

Yabe, M., Toyonaga, T., Kinoshita, M., Furukawa, Y., Hamaguchi, T., Tahara, Y.O., Arai, M., Imada, K. & Miyata, M.

Assembly formation of P65 protein, featured by an intrinsically disordered region involved in gliding machinery of Mycoplasma pneumoniae.

Biomolecules 15, 429  2025 (PMID:40149965 DOI:10.3390/biom15030429)

Toyonaga, T., Kato, T., Kawamoto, A., Miyata, T., Kawakami, K., Fujita, J., Hamaguchi, T., Namba, K. & Miyata, M.

Dimeric assembly of F1-like ATPase for the gliding motility of Mycoplasma.

Sci. Adv. 11, eadr9319  2025 (PMID:40009674 DOI:10.1126/sciadv.adr9319)

Takekawa, N., Yamaguchi, A., Nishiuchi, K., Uehori, M., Kinoshita, M., Minamino, T. & Imada, K.

Sodium-dependent conformational change in flagellar stator protein MotS from Bacillus subtilis.

Biomolecules 15, 302  2025 (PMID:40001605 DOI:10.3390/biom15020302)

Kinoshita, M., Makino, F., Miyata, T., Imada, K., Namba, K. & Minamino, T.

Structural basis for assembly and function of the Salmonella flagellar MS-ring with three different symmetries.

Commun. Biol. 8, 61  2025 (PMID:39820129 DOI:10.1038/s42003-025-07485-2)

2024

Nakamura, S. & Minamino, T.

Structure and dynamics of the bacterial flagellar motor complex.

Biomolecules 14(12)  2024 (PMID:39766194 DOI:10.3390/biom14121488)

Takekawa, N., Nishikino, T., Kishikawa, J., Hirose, M., Kinoshita, M., Kojima, S., Minamino, T., Uchihashi, T., Kato, T., Imada, K. & Homma, M.

Structural analysis of S-ring composed of FliFG fusion proteins in marine Vibrio polar flagellar motor.

mBio 15, 10  2024 (PMID:39240115 DOI:10.1128/mbio.01261-24)

Seki, S., Miyata, T., Norioka, N., Tanaka, H., Kurisu, G., Namba, K. & Fujii, R.

Structure-based validation of recombinant light-harvesting complex II.

PNAS Nexus 3, pgae405  2024 (PMID:39346626 DOI:10.1093/pnasnexus/pgae405)

Shimogonya, Y., Ruan, J., Kato, T., Ishikawa, T., Namba, K., Wu, L.-F. & Nishiyama, M.

Helical swimming motion driven by coordinated rotation of flagellar apparatus in marine bacterial cells.

JBSE 20, 1  2024 ( DOI:10.1299/jbse.24-00284)

Kasai, K., Imamura, K., Uno, M., Sekiyama, N., Miyata, T., Makino, F., Yamada, R., Takahashi, Y., Kodera, N., Namba, K., Ohnishi, H., Narita, A., Konno, H. & Tochio, H.

From monomers to oligomers: structural mechanisms of receptor-triggered MyD88 assembly in innate immune signaling.

bioRxiv   2024 ( DOI:10.1101/2024.09.13.612588)

Miki, T., Uemura, T., Kinoshita, M., Ami, Y., Ito, M., Okada, N., Furuchi, T., Kurihara, S., Haneda, T., Minamino, T. & Kim, T.-G.

Salmonella Typhimurium exploits host polyamines for assembly of the type 3 secretion machinery.

PLOS Biol. 22(8), e3002731  2024 (PMID:39102375 DOI:10.1371/jornal.pbio.3002731)

Sterbova, P., Wang, C.-H., Carillo, K.J.D., Lou, Y.-C., Kato, T., Namba, K., Tzou, D.-L.M.& Chang, W.-H.

Molecular Mechanism of pH-Induced Protrusion Configuration Switching in Piscine Betanodavirus Implies a Novel Antiviral Strategy

ACS Infectious Diseases 10, 3304-3319  2024 (PMID:39087906 DOI:10.1021/acsinfecdis.4c00407)

Lin, H.-H., Wang, C.-H., Huang, S.-H., Lin, S.-Y., Kato, T., Namba, K., Hosogi, N., Song, C., Murata, K., Yen, C.-H., Hsu, T.L., Wong, C.-H., Wu, Y.-M., Tu, I.-P. & Chang, W.-H.

Use of phase plate cryo-EM reveals conformation diversity of therapeutic IgG with 20kDa Fab fragment resolved below 6A.

Sci. Rep. 14, 14079  2024 (PMID:38890341 DOI:10.1038/s41598-024-62045-8)

Aijima, T., Ueda, R., Nakane, T., Makino, F., Ohnishi, Y., Tokunaga, J., Nakajima, K., Kamino, S., Kurisu, G., Namba, K., Nakata, H., Mogi, K., Sajiki, H., Akai, S. & Sawama, Y.

Versatile biaryls and fused aromatics through oxidative coupling of hydroquinones with (hetero)arenes.

ChemistrySelect 9, e202400647  2024 ( DOI:10.1002/slct.202400647)

Fukawa, E., Suzuki, Y., Adachi, T., Miyata, T., Makino, F., Tanaka, H., Namba, K., Sowa, K. & Shirai, O.

Structural and electrochemical elucidation of biocatalytic mechanisms in direct electron transfer-type D-fructose dehydrogenase.

Electrochimica Acta 490, 144271  2024 ( DOI:10.1016/j.electacta.2024.144271)

Kinoshita, M., Minamino, T., Uchihashi, T. & Namba, K.

FliH and FliI help FlhA bring strict order to flagellar protein export in Salmonella.

Commun. Biol. 7, 366  2024 (PMID:38531947 DOI:10.1038/s42003-024-06081-0)

Anzai, I., Fujita, J., Ono, C., Kosaka. Y., Miyamoto, Y., Shichinohe, S., Takada, K., Torii, S., Taguwa, S., Suzuki, K., Makino, F., Kajita, T., Inoue, T., Namba, K., Watanabe, T. & Matuura, Y.

Characterization of a neutralizing antibody that recognizes a loop region adjacent to the receptor-binding interface of the SARS-CoV-2 spike receptor-binding domain.

Micribiol. Spectr. 12, 4, e0365523  2024 (PMID:38415660 DOI:10.1128/spectrum.03655-23)

2023

Aizawa, S.-I. & Minamino, T.

Flagella.

Molecular Medical Biology, Third Edition 97-126  2023

Suzuki, Y., Makino, F., Miyata, T., Tanaka, H., Namba, K., Kano, K., Sowa, K., Kitazumi, Y. & Shirai, O.

Essential insight of direct electron transfer-type Bioelectrocataly-sis by Membrane-bound D-fructose dehydrogenase with structural bioelectrochemistry.

ACS Catalysis 13, 13828-13837  2023 ( DOI:10.1021/acscatal.3c03769)

Akiba, H., Fujita, J., Ise, T., Nishiyama, K., Miyata, T., Kato, T., Namba, K., Ohno, H., Kamada, H., Nagata, S. & Tsumoto, K.

Development of a 1:1-binding biparatopic anti-TNFR2 antagonist by reducing signaling activity through epitope selection.

Commun. Biol. 6, 987  2023 (PMID:37758868 DOI:10.1038/s42003-023-05326-8)

Minamino, T., Nakane, D., Nakamura, S., Kiyama, H., Morimoto, V.Y., Miyata, M.

Frontiers of microbial movement research.

Biophys. Physicobiol. 20, e200033  2023 (PMID:38124794 DOI:10.2142/biophysico.bppb-v20.0033)

Minamino, T. & Kinoshita, M.

Structure, assembly, and function of flagella responsible for bacterial locomotion.

Eco. Sal. Plus 11, 1  2023 (PMID:37260402 DOI:10.1128/ecosalplus.esp-0011-2023)

Fujita, J., Amesaka, H., Yoshizawa, T., Hibino, K., Kamimura, N., Kuroda, N., Konishi, T., Kato, Y., Hara, M., Inoue, T., Namba, K., Tanaka, S. & Matsumura, H.

Structures of a FtsZ single protofilament and a double-helical tube in complex with a monobody.

Nat. Commun. 14, 4073  2023 (PMID:37429870 DOI:10.1038/s41467-023-39807-5 )

Adachi, T., Miyata, T., Makino, F., Tanaka, H., Namba, K., Kano, K., Sowa, K., Kitazumi, Y. & Shirai, O.

Experimental and Theoretical Insights into Bienzymatic Cascade for Mediatorless Bioelectrochemical Ethanol Oxidation with Alcohol and Aldehyde Dehydrogenases.

ACS Catalysis 13, 7955-7965  2023 ( DOI:10.1021/acscatal.3c01962)

Bryan, E., Ferrer-Gonzlaez, E., Sagong, H.Y., Fujita, J., Mark, L., Kaul, M., LaVoie, E.J., Matsumura, H. & Pilch, D.S.

Structural and antibacterial characterization of a new benzamide FtsZ inhibitor with superior bactericidal activity and in vivo efficacy against multidrug-resistant Staphylococcus aureus.

ACS Chem. Biol. 18, 629-642  2023 (PMID:36854145 DOI:10.1021/acschembio.2c0093)

Nakamura, S. & Minamino, T.

High-Resolution Rotation Assay of the Bacterial Flagellar Motor Near Zero Loads Using a Mutant Having a Rod-Like Straight Hook.

Methods in Molecular Biology 2646:125-131  2023 (PMID:36842111 DOI:10.1007/978-1-0716-3060-0_11)

Morimoto, Y.V. & Minamino, T.

Measurements of the Ion Channel Activity of the Transmembrane Stator Complex in the Bacterial Flagellar Motor

Methods in Molecular Biology 2646:83-94  2023 (PMID:36842108 DOI:10.1007/978-1-0716-3060-0_8)

Yamaguchi, T., Miyata, T., Makino, F. & Namba, K.

Purification and CryoEM Image Analysis of the Bacterial Flagellar Filament.

Methods in Molecular Biology 2646:43-53  2023 (PMID:36842105 DOI:10.1007/978-1-0716-3060-0_5)

Kinoshita, M., Namba, K. & Minamino, T.

Purification of the Transmembrane Polypeptide Channel Complex of the Salmonella Flagellar Type III Secretion System

Methods in Molecular Biology 2646:3-15  2023 (PMID:36842101 DOI:10.1007/978-1-0716-3060-0_1)

Minamino, T., Miyata, M. & Namba, K. (Editors)

Bacterial and Archaeal Motility - Methods and Protocols

Methods in Molecular Biology Springer Nature vol.2646  2023 ( DOI:10.1007/978-1-0716-3060-0)

Xiong, D., Yang, Z., He, X., He, W., Shen, D., Wang, L., Lin, L., Murero, A., Minamino, T., Shao, X. & Qian, G.

Loss of flagella-related genes enables a nonflagellated, fungal-predating bacterium to strengthen the synthesis of an antifungal weapon.

Microbiol. Spectr. 14;11(1):e0414922  2023 (PMID:36629418 DOI:10.1128/spectrum.04149-22)

Fujita, J., Makino, F., Asahara, H., Moriguchi, M., Kumano, S., Anzai, I., Kishikawa, J., Matsuura, Y., Kato, T., Namba, K. & Inoue, T.

Epoxidized graphene grid for high-throughput high-resolution cryoEM structural analysis.

Scientific Reports 13, 2279  2023 (PMID:36755111 DOI:10.1038/s41598-023-29396-0)

Jiang, H., Ariyoshi, M., Hori, T., Watanabe, R., Makino, F., Namba, K. & Fukagawa, T.

The cryo-EM structure of the CENP-A nucleosome in complex with ggKNL2.

EMBO Journal 42, e111965  2023 (PMID:36744604 DOI:10.15252/embj.2022111965)

Shibata, S., Tahara, Y.O., Katayama, E., Kawamoto, A., Kato, T., Zhu, Y., Nakane, D., Namba, K., Miyata, M., McBride, M.J. & Nakayama, K.

Filamentous structures in the cell envelope are associated with bacteroidetes gliding machinery.

Commun. Biol. 6, 94  2023 (PMID:36690840 DOI:10.1038/s42003-023-04472-3 )

2022

Sasajima, Y., Kato, T., Miyata, T., Kawamoto, A., Namba, K. & Miyata, M.

Isolation and structure of the fibril protein, a major component of the internal ribbon for Spiroplasma swimming.

Front. Microbiol. 13, 1004601  2022 (PMID:36274716 DOI:10.3389/fmicb.2022.1004601 )

Otsubo, R., Minamitani, T., Kobiyama, K., Fujita, J., Ito, T., Ueno, S., Anzai, I., Tanino, H., Aoyama, H., Matsuura, Y., Namba, K., Imadome, K., Ishii, K.J., Tsumoto, K., Kamitani, W. & Yasui, T.

Human antibody recognition and neutralization mode on the NTD and RBD domains of SARS-CoV-2 spike protein.

Scientific Reports 12, 20120  2022 (PMID:35436443 DOI:1038/s41598-022-24730-4)

Minamino, T., Kinoshita, M., Morimoto, Y.V. & Namba, K.

Activation mechanism of the bacterial flagellar dual-fuel protein export engine.

Biophys. Physicobiol. 19, e190046  2022 (PMID:36567733 DOI:10.2142/biophysico.bppb-v19.0046)

Li, J., Hamaoka, N., Makino, F., Kawamoto, A., Lin, Y., R?gner, M., Nowaczyk, M.M., Lee, Y.-H., Namba, K., Gerle, C. & Kurisu, G.

Structure of cyanobacterial photosystem I complexed with ferredoxin at 1.97 A resolution.

Commun. Biol. 12;5(1)951  2022 (PMID:36097054 DOI:10.1038/s42003-022-03926-4)

Gerle, C., Kishikawa, J., Yamaguchi, T., Nakanishi, A., Coruh, O., Makino, F., Miyata, T., Kawamoto, A., Yokoyama, K., Namba, K., Kurisu, G. & Kato, T.

Structures of multisubunit membrane complexes with the CRYO ARM 200

Microscopy dfac037  2022 (PMID:35861182 DOI:10.1093/jmicro/dfac037)

Shibata, S., Tahara, Y.O., Katayama, E., Kawamoto, A., Zhu, Y., Nakane, D., Namba, K., Miyata, M., McBride, M.J. & Nakayama, K.

A multi-rail structure in the cell envelope for the Bacteroidetes gliding machinery.

Research Square   2022 ( DOI:10.21203/rs.3.rs-1802191/v1)

Minamino, T., Kinoshita, M., Inoue, Y., Kitao, A. & Namba, K.

Conserved GYXLI motif of FlhA is involved in dynamic domain motions of FlhA required for flagellar protein export.

Microbiol. Spectr. 10(4), e0111022  2022 (PMID:35876582 DOI:10.1128/spectrum.01110-22)

Maeda R., Fujita J., Konishi Y., Kazuma Y., Yamazaki H., Anzai I., Watanabe, T., Yamaguchi K., Kasai K., Nagata K., Yamaoka Y., Miyakawa K., Ryo A., Shirakawa K., Sato, K., Makino F., Matsuura Y., Inoue T., Imura A., Namba K., & Takaori-Kondo A.

A panel of nanobodies recognizing conserved hidden clefts of all SARS-CoV-2 spike variants including Omicron.

Commun. Biol. 5, 669  2022 (PMID:35794202 DOI:10.1038/s42003-022-03630-3)

Yoshikawa, T., Makino, F., Miyata, T., ZSuzuki, Y., Tanaka, H., Namba, K., Kano, K., Sowa, K., Kitazumi, Y. & Shirai, O.

Multiple electron transfer pathways of tungsten-containing formate dehydrogenase in direct electron transfer-type bioelectrocatalysis.

Chem.Comm. 58, 6478-6481  2022 (PMID:35535582 DOI:10.1039/D2CC01541B)

Minamino, T., Kinoshita, M. & Namba, K.

Insight into distinct functional roles of the flagellar ATPase complex for flagellar assembly in Salmonella.

Front. Microbiol. 13, 864178  2022 (PMID:35602071 DOI:10.3389/fmicb.2022.864178)

Namba, K. & Makino, F.

Recent progress and future perspective of electron cryomicroscopy for structural life sciences.

Microscopy 71(S1), i3-i14  2022 (PMID:35275178 DOI:10.1093/jmicro/dfab049)

2021

Matsunami, H., Yoon, Y.-H., Imada, K., Namba, K. & Samatey, F.A.

Structure of the bacterial flagellar hook cap provides insights into a hook assembly mechanism.

Communications Biology 4; 1291  2021 (PMID:34785766 DOI:10.1038/s42003-021-02796-6)

Minamino, T., Morimoto, Y.V., Kinoshita, M. & Namba, K.

Multiple roles of flagellar export chaperones for efficient and robust flagellar filament formation in Salmonella.

Frontiers in Microbiology 12; 756044  2021 (PMID:34691007 DOI:10.3389/fmicb.2021.756044)

Hendriksen, J.J., Lee, H.J., Bradshaw, A.J., Namba, K., Chevance, F.F.V., Minamino, T., Hughes, K.T.

Genetic analysis of the Salmonella FliE protein that forms the base of the flagellar axial structure.

mBio 12(5): e02392-21  2021 (PMID:34579566 DOI:10.1128/mBio.02392-21)

Jin, F., Sun, M., Fujii, T., Yamada, Y., Wang, J., Maturana, A.D., Wada, M., Su, S., Ma, J., Takeda, H., Kusakizako, T., Tomita, A., Nakada-Nakura, Y., Liu, K., Uemura, T., Nomura, Y., Nomura, N., Ito, K., Nureki, O., Namba, K., Iwata, S., Yu, Y. & Hattori, M.

The structure of MgtE in the absence of magnesium provides new insights into channel gating.

PLoS Biol. 19(4): e3001231  2021 (PMID:33905418 DOI:10.1371/journal.pbio.3001231)

Toyonaga, T., Kato, T., Kawamoto, A., Kodera, N., Hamaguchi, T., Tahara, Y.O., Ando, T., Namba, K. & Miyata, M.

Chained structure of dimeric F1-like ATPase in Mycoplasma mobile gliding machinery.

mBio 12(4): e0141421  2021 (PMID:34281395 DOI:10.1128/MBIO.01414-21)

Yamaguchi, T., Makino, F., Miyata, T., Minamino, T., Kato, T. & Namba, K.

Structure of the molecular bushing of the bacterial flagellar motor.

Nat. Commun. 12, 4469  2021 (PMID:34294704 DOI:10.1038/s41467-021-24715-3)

Kawamoto, A., Miyata, T., Makino, F., Kinoshita, M., Minamino, T., Imada, K., Kato, T. & Namba, K.

Native flagellar MS ring is formed by 34 subunits with 23-fold and 11-fold subsymmetries.

Nat. Commun. 12, 4223  2021 (PMID:34244518 DOI:10.1038/s41467-021-24507-9)

Minamino, T., Morimoto, Y.V., Kinoshita, M. & Namba, K.

Membrane voltage-dependent activation mechanism of the bacterial flagellar protein export apparatus.

PNAS 118 (22) e2026587118  2021 (PMID:34035173 DOI:10.1073/pnas.2026587118)

Minamino, T. & Namba, K.

Recent advances in the bacterial flagellar motor study

Biomolecules 11, 741  2021 (PMID:34067523 DOI:10.3390/biom11050741)

Inoue, Y., Kinoshita, M., Kida, M., Takekawa, N., Namba, K., Imada, K. & Minamino, T.

The FlhA linker mediates flagellar protein export switching during flagellar assembly.

Communications Biology 4, 646  2021 (PMID:34059784 DOI:10.1038/s42003-021-02177-z)

Kinoshita, M., Namba, K. & Minamino, T.

A positive charge region of Salmonella FliI is required for ATPase formation and efficient flagellar protein export.

Communications Biology 4, 464  2021 (PMID:33846530 DOI:10.1038/s42003-021-01980-y)

Minamino, T., Kinoshita, M., Morimoto, Y.V. & Namba, K.

The FlgN chaperone activates the Na+-driven engine of the Salmonella flagellar protein export apparatus.

Communications Biology 4, 335  2021 (PMID:33712678 DOI:10.1038/s42003-021-01865-0)

Takekawa, N., Kawamoto, A., Sakuma, M., Kato, T., Kojima, S., Kinoshita, M., Minamino, T., Namba, K., Homma, M. & Imada, K.

Two distinct conformations in 34 FliF subunits generate three different symmetries within the flagellar MS-ring.

mBio 12:e03199-20  2021 (PMID:33653894 DOI:10.1128/mBio.03199-20.)

Coruh, O., Frank, A., Tanaka, H., Kawamoto, A., El-Mohsnawy, E., Kato, T., Namba, K., Gerle, C., Nowaczyk, M.M., Kurisu, G.

Cryo-EM structure of a functional monomeric Photosystem I from Thermosynechococcus elongates reveals ‘red’ chlorophyll cluster.

Commun. Biol. 4, 304  2021 (PMID:33686186 DOI:10.1038/s42003-021-01808-9 )

Inoue, Y., Hanazono, Y., Noi, K., Kawamoto, A., Kimatsuka, M. Harada, R.,Takeda, K., Iwamasa, N., Shibata, K., Noguchi, K., Shigeta, Y., Namba, K., Ogura, T., Miki, K., Shinohara, K., Yohda, M.

Split conformation of Chaetomium thermophilum Hsp104 disaggregase.

Structure 29, 1-10  2021 (PMID:33651974 DOI:10.1016/j.str.2021.02.002)

Ariyoshi, M., Makino, F., Watanabe, R., Nakagawa, R., Kato, T., Namba, K., Arimura, Y., Fujita, R., Kurumizaka, H., Okumura, E., Hara, M. & Fukagawa, T.

Cryo-EM structure of the CENP-A nucleosome in complex with phosphorylated CENP-C.

EMBO Journal e105671  2021 (PMID:33463726 DOI:10.15252/embj.2020105671)

Morimoto, Y.V. & Minamino, T.

Architecture and assembly of the bacterial flagellar motor complex.

Macromolecular Protein Complexes III: Structure and Function, Subcellular Biochemistry 96: 297-321  2021 (PMID:33252734 DOI:10.1007/978-3-030-58971-4_8.)

2020

Fulano, A.M., Shen, D., Zhang, E.-H., Shen, X., Chou, S.-H., Minamino, T., Puopolo, G. & Qian, G.

Functional divergence of flagellar type III secretion system: A case study in a non-flagellated, predatory bacterium.

Comput. Struct. Biotechnol. 18, 3368-3376  2020 ( DOI:10.1016/j.csbj.2020.10.029)

Terahara, N., Namba, K. & Minamino, T.

Dynamic exchange of two types of stator units in Bacillus subtilis flagellar motor in response to environmental changes.

Comput. Struct. Biotechnol. 18, 2897-2907  2020 (PMID:33163150 DOI:10.1016/j.csbj.2020.10.009)

Vizarraga, D., Kawamoto, A., Matsumoto, U., Illanes, R., Perez-Luque, R., Martin, J., Mazzolini, R., Bierge, P., Pich, O., Espasa, M., Sanfeliu, I., Esperalba, J., Fernandez-Huerta, M., Scheffer, M., Pinyol, J., Frangakis, A., Lluch-Senar, M., Mori, S., Shibayama, K., Kenri, T., Kato, T., Namba, K., Fita, I., Miyata, M. & Aparicio, D.

Immunodominant proteins P1 and P40/P90 from human pathogen Mycoplasma pneumoniae.

Nat. Commun. 11, 5188  2020 (PMID:33057023 DOI:10.1038/s41467-020-18777-y)

Morimoto, V.Y., Namba, K. & Minamino, T.

GFP fusion to the N-terminus of MotB affects the proton channel activity of the bacterial flagellar motor in Salmonella.

Biomolecules 10, 1255  2020 (PMID:32872412 DOI:10.3390/biom10091255)

Kishikawa, J., Nakanishi, A., Furuta, A., Kato, T., Namba, K., Tamakoshi, M., Mitsuoka, K. & Yokoyama, K.

Mechanical inhibition of isolated V0 from V/A-ATPase for proton conductance.

eLife 9:e56862  2020 (PMID:32639230 DOI:10.7554/eLife.56862)

Terashima, H., Hirano, K., Inoue, Y., Tokano, T., Kawamoto, A., Kato, T., Yamaguchi, E., Namba, K., Uchihashi, T., Kojima, S. & Homma, M.

Assembly mechanism of a supramolecular MS-ring complex to initiate bacterial flagellar biogenesis in Vibrio species.

J. Bacteriol. 202, e00236-20  2020 (PMID:32482724 DOI:10.1128/JB.00236-20)

Fulano, A.M., Shen, D., Kinoshita, M., Chou, S.-H., & Qian, G.

The homologous components of flagellar type III protein apparatus have acquired a novel function to control twitching motility in a non-flagellated biocontrol bacterium.

Biomolecules 10, 733  2020 (PMID:32392834 DOI:10.3390/biom10050733)

Miyata, M., Robinson, R.C., Uyeda, T.P.Q., Fukumori, Y., Fukushima, S., Haruta, S., Homma, M., Inaba, K., Ito, M., Kaito, C., Kato, K., Kenri, T., Kinoshita, Y., Kojima, S., Minamino, T., Mori, H., Nakamura, S., Nakane, D., Nakayama, K., Nishiyama, M., Shibata, S., Shimabukuro, K., Tamakoshi, M., Taoka, A., Tashiro, Y., Tulum, I., Wada, H. & Wakabayashi, K.

Tree of motility _ A proposed history of motility systems in the tree of life.

Genes Cells 25:6_21  2020 (PMID:31957229 DOI:10.1111/gtc.12737)

Oide, M., Kato, T., Oroguchi, T. & Nakasako, M.

Energy landscape of domain motion in glutamate dehydrogenase deduced from cryo-electron microscopy.

FEBS J. 287, 3472-3493  2020 (PMID:31976609 DOI:10.1111/febs.15224)

Nakamura, S., Hanaizumi, Y., Morimoto, Y.V., Inoue, Y., Erhardt, M., Minamino, T. & Namba, K.

Direct observation of speed fluctuations of flagellar motor rotation at extremely low load close to zero.

Mol. Microbiol. 113(4):755-765  2020 (PMID:31828860 DOI:10.1111/mmi.14440)

Yamaguchi, T., Toma, S., Terahara, N., Miyata, T., Ashihara, M., Minamino, T., Namba, K. & Kato, T.

Structural and functional comparison of Salmonella flagellar filaments composed of FljB and FliC.

Biomolecules 10, 246  2020 (PMID:32041169 DOI:10.3390/bioml0020246)

Minamino, T., Inoue, Y., Kinoshita, M. & Namba, K.

FliK-driven conformational rearrangements of FlhA and FlhB are required for export switching of the flagellar protein export apparatus.

J. Bacteriol. 202:e00637-19  2020 (PMID:31712281 DOI:10.1128/JB.00637-19)

Terashima, H., Tatsumi, C., Kawamoto, A., Namba, K., Minamino, T. & Imada, K.

In vitro autonomous construction of the flagellar axial structure in the inverted membrane vesicles.

Biomolecules 10, 126  2020 (PMID:31940802 DOI:10.3390/biom10010126)

Yamada, Y., Namba, K. & Fujii, T.

Cardiac muscle thin filament structures reveal calcium regulatory mechanism.

Nat. Commun. 11, 153  2020 (PMID:31919429 DOI:10.1038/s41467-019-14008-1)

2019

Nishikawa, M.S., Nakane, D., Toyonaga, T., Kawamoto, A., Kato, T., Namba, K. & Miyata, M.

Refined mechanism of Mycoplasma mobile gliding based on structure, ATPase activity, and sialic acid binding of machinery.

mBio 10:e02846-19  2019 (PMID:31874918 DOI:10.1128/mBio.02846-19)

Kato, T., Makino, F., Miyata, T., Horv_th, P. & Namba, K.

Structure of the native supercoiled flagellar hook as a universal joint.

Nat. Commun. 10, 5295  2019 (PMID:31757961 DOI:10.1038/s41467-019-13252-9)

Kato, T., Makino, F., Nakane, T., Terahara, N., Kaneko, T., Shimizu, Y., Motoki, S., Ishikawa, I., Yonekura, K. & Namba, K.

CryoTEM with a cold emission gun that moves structural biology into a new stage.

Microsc. microanal. 25(Suppl 2):998-999  2019 ( DOI:10.1017/S1431927619005725)

Horvath, P., Kato, T., Miyata, T. & Namba, K.

Structure of Salmonella flagellar hook reveals intermolecular domain interactions for the universal joint function.

Biomolecules 9, 462  2019 (PMID:31505847 DOI:10.3390/biom9090462)

Minamino, T., Kinoshita, M. & Namba, K.

Directional switching mechanism of the bacterial flagellar motor.

Comp. Struct. Biotechnol. J. 17:1075-1081  2019 (PMID:31452860 DOI:10.1016/j.csbj.2019.07.020)

Nakamura, S. & Minamino, T.

Flagella-driven motility of bacteria.

Biomolecules 9, 279  2019 (PMID:31337100 DOI:10.3390/biom9070279)

Saijo-Hamano, Y., Matsunami, H., Namba, K. & Imada, K.

Architecture of the Bacterial Flagellar Distal Rod and Hook of Salmonella.

Biomolecules 9, 260  2019 (PMID:31284631 DOI:10.3390/biom9070260)

Inoue, Y., Kinoshita, M., Namba, K. & Minamino, T.

Mutational analysis of the C-terminal cytoplasmic domain of FlhB, a transmembrane component of the flagellar type III protein export apparatus in Salmonella.

Genes Cells 24(6):408-421  2019 (PMID:30963674 DOI:10.1111/gtc.12684)

Inoue, Y., Ogawa, Y., Kinoshita, M., Shimada, M., Kodera, N., Ando, T., Namba, K, Kitao, A., Imada, K. & Minamino, T.

Structural insights into the substrate specificity switching mechanism of the type III protein export apparatus.

Structure 27(6):965-976.e6  2019 (PMID:31031200 DOI:10.1016/j.str.2019.03.017)

Sakai, T., Miyata, T., Terahara, N., Mori, K., Inoue, Y., Morimoto, Y.V., Kato, T., Namba, K. & Minamino, T.

Novel insights into conformational rearrangements of the bacterial flagellar switch complex.

mBio 10:e00079-19  2019 (PMID:30940700 DOI:10.1128/mBio.00079-19)

2018

Fujii, T, Namba, K.

Complementary use of electron cryomicroscopy and X-ray crystallography: structural studies of actin and actomyosin filaments.

Integrative Structural Biology with Hybrid Methods, Advances in Experimental Medicine and Biology, Springer Nature Singapore Pte Ltd. 1105:25-42  2018 (PMID:30617822 DOI:10.1007/978-981-13-2200-6_4)

Minamino, T., Terahara, N., Kojima, S. & Namba, K.

Autonomous control mechanism of stator assembly in the bacterial flagellar motor in response to changes in the environment.

Mol. Microbiol. 10:723-734  2018 (PMID:30069936 DOI:10.1111/mmi.14092)

Terashima, H., Kawamoto, A., Tatsumi, C., Namba, K., Minamino, T. & Imada, K.

In vitro reconstitution of functional type III protein export and insights into flagellar assembly.

mBio 9(3):e00988-18  2018 (PMID:29946050 DOI:10.1128/mBio.00988-18)

Tahara, H., Takabe, K., Sasaki, Y., Kasuga, K., Kawamoto, A., Koizumi, N., Nakamura, S.

The mechanism of two-phase motility in the spirochete Leptospira: Swimming and crawling.

Sci. Adv. 4(5):eaar7975  2018 (PMID:29854948 DOI:10.1126/sciadv.aar7975)

Sasaki, Y., Kawamoto, A., Tahara, H., Kasuga, K., Sato, R., Ohnishi, M., Nakamura, S., Koizumi, N.

Leptospiral flagellar sheath protein FcpA interacts with FlaA2 and FlaB1 in Leptospira biflexa.

PLoS One 13(4):e0194923  2018 (PMID:29634754 DOI:10.1371/journal.pone.0194923)

Minamino, T.

Hierarchical protein export mechanism of the bacterial flagellar type III protein export apparatus.

FEMS Microbiol. Lett. 365:1-9  2018 (PMID:29850796 DOI:10.1093/femsle/fny117)

Namba, K., Kato, T.

Technical Development of Electron Cryomicroscopy and Contributions to Life Sciences.

JEOL NEWS 53:18-24  2018

Minamino, T., Kato, T., Makino, F., Horvath, P., Miyata, T. & Namba, K.

Electron Microscopy of Motor Structure and Possible Mechanisms.

Encyclopedia of Biophysics   2018 ( DOI:10.1007/978-3-642-16712-6_196)

Minamino, T., Morimoto, Y.V., Kawamoto, A., Terashima, H. & Imada, K.

The bacterial flagellum.

InTechOpen 42811  2018 ( DOI:10.5772/intechopen.73277)

Terahara, N., Inoue, Y., Kodera, N., Morimoto, Y.V., Uchihashi, T., Imada, K., Ando, T., Namba, K. & Minamino, T.

Insight into structural remodeling of the FlhA ring responsible for bacterial flagellar type III protein export.

Sci. Adv. 4(4):eaao7054  2018 (PMID:29707633 DOI:10.1126/sciadv.aao7054)

Kinoshita, M., Namba, K. & Minamino, T.

Effect of a clockwise-locked deletion in FliG on the FliG ring structure of the bacterial flagellar motor.

Genes Cells 23:241-247  2018 (PMID:29405551 DOI:10.1111/gtc.12565)

Fujii, T., Matsunami, H., Inoue, Y. & Namba, K.

Evidence for the hook supercoiling mechanism of the bacterial flagellum.

Biophysics and Physicobiology 15:28-32  2018 (PMID:29607277 DOI:10.2142/biophysico.15.0_28)

Inoue, Y., Morimoto, Y.V., Namba, K. & Minamino, T.

Novel insights into the mechanism of well-ordered assembly of bacterial flagellar proteins in Salmonella.

Sci Rep 8(1787)  2018 (PMID:29379125 DOI:10.1038/s41598-018-20209-3)

Kinoshita, M., Furukawa, Y., Uchiyama, S., Imada, K., Namba, K. & Minamino, T.

Insight into adaptive remodeling of the rotor ring complex of the bacterial flagellar motor.

BBRC 496:12-17  2018 (PMID:29294326 DOI:10.1016/j.bbrc.2017.12.118)

Sakai, T., Inoue, Y., Terahara, N., Namba, K. & Minamino, T.

A triangular loop of domain D1 of FlgE is essential for hook assembly but not for the mechanical function.

BBRC 495:1789-1794  2018 (PMID:29229393 DOI:10.1016/j.bbrc.2017.12.037)

2017

Terashima, N., Kawamoto, A., Morimoto, Y.V., Imada, K. & Minamino, T.

Structural differences in the bacterial flagellar motor among bacterial species.

Biophysics and Physicobiology 14:191-198  2017 (PMID:29362704 DOI:10.2142/biophysico.14.0_191)

Morimoto, Y.V., Kami-ike, N., Namba, K. & Minamino, T.

Determination of local pH differences within living Salmonella cells by high-resolution pH imaging based on pH-sensitive GFP derivative, pHluorin(M153R).

Bio-protocol 7(1):e2529  2017 ( DOI:10.21769/BioProtoc.2529)

Terahara, N., Kodera, N., Uchihashi, T., Ando, T., Namba, K. & Minamino, T.

Na+-induced structural transition of MotPS for stator assembly of Bacillus flagellar motor.

Sci. Adv. 3(11):eaao4119  2017 (PMID:29109979 DOI:10.1126/sciadv.aao4119)

Pourjaberi, S.N.S., Terahara, N., Namba, K. & Minamino, T.

The role of a cytoplasmic loop of MotA in load-dependent assembly and disassembly dynamics of the MotA/B stator complex in the bacterial flagellar motor.

Mol. Microbiol. 106(4):646-658  2017 (PMID:28925530 DOI:10.1111/mmi.13843.)

Takabe, K., Kawamoto, A., Tahara, H., Kudo, S. & Nakamura, S.

Implications of coordinated cell-body rotations for Leptospira motility.

Blood 491:1040-1046  2017 (PMID:28780349 DOI:10.1016/j.bbrc.2017.08.007)

Fukumura T, Makino F, Dietsche T, Kinoshita M, Kato T, Wagner S, Namba K, Imada K, Minamino T

Assembly and stoichiometry of the core structure of the bacterial flagellar type III export gate complex

PLoS. Biol. 15(8):e2002281  2017 (PMID:28771466 DOI:10.1371/journal.pbio.2002281)

Morimoto, Y.V., Minamino, T.

Stoichiometry and turnover of the stator and rotor.

The Bacterial Flagellum _ Methods and Protocols- 1593:203-213  2017 (PMID:28389956 DOI:10.1007/978-1-4939-6927-2_16)

Kawamoto, A., Namba, K.

Structural study of the bacterial flagellar basal body by electron cryomicroscopy and image analysis.

The Bacterial Flagellum _ Methods and Protocols- 1593:119-131  2017 (PMID:28389949 DOI:10.1007/978-1-4939-6927-2_9)

Kawamoto, A., Namba, K.

Fuel of the bacterial flagellar type III protein export apparatus.

The Bacterial Flagellum _ Methods and Protocols- 1593:3-16  2017 (PMID:28389941 DOI:10.1007/978-1-4939-6927-2_1)

Hiraoka, K.D., Morimoto, Y.V., Inoue, Y., Fujii, T., Miyata, T., Makino, F., Minamino, T. & Namba, K.

Straight and rigid flagellar hook made by insertion of the FlgG specific sequence into FlgE.

Sci Rep 7:46723  2017 (PMID:28429800 DOI:10.1038/srep46723.)

Terahara, N., Noguchi, Y., Nakamura, S., Kamiike, N., Ito, M., Namba, K., Minamino, T.

Load- and polysaccharide-dependent activation of the Na+-type MotPS stator in the Bacillus subtilis flagellar motor.

Sci Rep 7:46081  2017 (PMID:28378843 DOI:10.1038/srep46081)

Renault, T.T., Abraham, A.O., Bergmiller, T., Parados, G., Rainville, S., Charpentier, E., Guet, C.C., Tu, Y., Namba, K., Keener, J.P., Minamino, T. & Erhardt, M.

Bacterial flagella grow through an injection-diffusion mechanism.

eLife 6:e23136  2017 (PMID:28262091 DOI:10.7554/eLife.23136)

Morimoto, Y.V., Namba, K. & Minamino, T.

Measurements of free-swimming speed of motile Salmonella cells in liquid media.

Bio-protocol 7(1):e2093  2017 ( DOI:10.21769/BioProtoc.2093)

Morimoto, Y.V., Namba, K. & Minamino, T.

Bacterial intracellular sodium ion measurement using CoroNa Green.

Bio-protocol 7(1):e2092  2017 ( DOI:10.21769/BioProtoc.2092)

Fujii T, Kato T, Hiraoka KD, Miyata T, Minamino T, Chevance FF, Hughes KT, Namba K

Identical folds used for distinct mechanical functions of the bacterial flagellar rod and hook.

Nat. Commun. 8:14276  2017 (PMID:28120828 DOI:10.1038/ncomms14276)

Fujii T, Namba K.

Structure of actomyosin rigour complex at 5.2-_ resolution and insights into the ATPase cycle mechanism

Nat. Commun. 8:13969  2017 (PMID:28067235 DOI:10.1038/ncomms13969)

2016

Morimoto YV, Kami-Ike N, Miyata T, Kawamoto A, Kato T, Namba K, Minamino T

High-resolution pH imaging of living bacterial cell to detect local pH differences.

mBio 7(6)  2016 (PMID:27923921 DOI:10.1128/mBio.01911-16)

Makino, F., Shen, D., Kajimura, N., Kawamoto, A., Pissaridou, P., Oswin, H., Pain M., Murillo, I., Namba, K. & Blocker, A.J.

The architecture of the cytoplasmic region of type III secretion systems.

Sci Rep 6:33341  2016 (PMID:27686865 DOI:10.1038/srep33341)

Furukawa, Y., Inoue, Y., Sakaguchi, A., Mori, Y., Fukumura, T., Miyata, T., Namba, K. & Minamino, T.

Structural stability of flagellin subunit affects the rate of flagellin export in the absence of FliS chaperone.

Mol. Microbiol. 102(3):405-416  2016 (PMID:27461872 DOI:10.1111/mmi.13469)

Takekawa, N., Terahara, N., Kato, T., Gohara, M., Mayanagi, K., Hijikata, A., Onoue, Y., Kojima, S., Shirai, T., Namba, K. & Homma, M.

The terameric MotA complex as the core of the flagellar motor stator from hyperthermophilic bacterium.

Sci Rep 6:31526  2016 (PMID:27531865 DOI:10.1038/srep31526)

Kawakita, Y., Kinoshita, M., Furukawa, Y., Tulum, I., Katayama, E., Namba, K. & Miyata, M.

Structural study of MPN387, an essential protein for gliding motility of a human pathogenic bacterium, Mycoplasma pneumonia.

J. Bacteriol. 198:2352-2359  2016 (PMID:27325681 DOI:10.1128/JB.00160-16)

Matsunami, H., Yoon, Y.-H., Meshcheryakov, V.A., Namba, K. & Samatey, F.A.

Structural flexibility of the periplasmic protein, FlgA, regulates flagellar P-ring assembly in Salmonella enterica.

Sci Rep 6:27399  2016 (PMID:27273476 DOI:10.10.8/srep27399)

Kinoshita, M., Nakanishi, Y., Furukawa, Y., Namba, K., Imada, K. & Minamino, T.

Rearrangements of α-helical structures of FlgN chaperone control the binding affinity for its cognate substrates during flagellar type III export.

Mol. Microbiol. 101:656-670  2016 (PMID:27178222 DOI:10.1111/mmi.13415)

Kawamoto, A., Matsuo, L., Kato, T., Yamamoto, H., Namba, K., Miyata, M.

Periodicity in attachment organelle revealed by electron cryotomography suggests conformational changes in gliding mechanism of Mycoplasma pneumoniae.

mBio 7(2):e00243-16  2016 (PMID:27073090 DOI:10.1128/mBio.00243-16)

Imada, K., Minamino, T., Uchida, Y., Kinoshita, M., Namba, K.

Insight into the flagella type III export revealed by the complex structure of the type III ATPase and its regulator.

Proc. Natl. Acad. Sci. U. S. A. 113(13):3633-3638  2016 (PMID:26984495 DOI:10.1073/pnas)

Baker, M. A. B., Hynson, R. M. G., Ganuelas, L. A., Mohammadi, N. S., Liew, C. W., Rey, A. A., Duff, A. P., Whitten, A. E., Jeffries, C. M., Delalez, N. J., Morimoto, Y. V., Stock, D., Armitage, J. P., Turberfield, A. J., Namba, K., Berry, R. M. & Lee, L. K.

Domain-swap polymerization drives the self-assembly of the bacterial flagellar motor.

Nat. Struct. Mol. Biol. 23:197-203  2016 (PMID:26854663 DOI:10.1073/pnas)

Minamino, T., Morimoto, Y.V., Hara, N., Aldridge, P.D. , Namba, K.

The bacterial flagellar type III export gate complex is a dual fuel engine that can use both H+ and Na+ for flagellar protein export.

PLoS Pathog. 4;12(3):e1005495  2016 (PMID:26943926 DOI:10.1371/journal.ppat.1005495)

Minamino, T., Kinoshita, M., Inoue, Y., Morimoto, Y.V., Ihara, K., Koya, S., Hara, N., Nishioka, N., Kojima, S., Homma, M. & Namba, K.

FliH and FliI ensure efficient energy coupling of flagellar type III protein export in Salmonella.

MicrobiologyOpen 5(3):424-35  2016 (PMID:26916245 DOI:10.1002/mbo3.340)

Komatsu, H., Hayashi, F., Sasa, M., Shikata, K., Yamaguchi, S., Namba, K. & Oosawa, K.

Genetic analysis of revertants isolated from the rod-fragile fliF mutant of Salmonella.

Biophysics and Physicobiology 13:13-25  2016 (PMID:27924254 DOI:10.2142/biophysico.13.0_13)

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JEOL YOKOGUSHI Research Alliance Laboratories, Graduate School of Frontier Biosciences, The University of Osaka
1-3 Yamadaoka, Suita, Osaka 565-0871 Japan

TEL: +81-6-6879-4625

E-mail: namba.keiichi.fbs[at]osaka-u.ac.jp (SA Prof. Keiichi Namba)

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