2026-09-02 REL RCSB INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY RCSB RCSB 2026-01-26 2026-09-02 2026-09-02 2026-09-02 Agencia Nacional de Investigacion e Innovacion (ANII) Uruguay Native flagellar filament from Leptospira interrogans Brady MR San Martin F Sindelar CV Buschiazzo A Bacterial Endo-flagellum, Filament, PROTEIN FIBRIL San Martin F Brady MR Fule L Nouchikian L Rodriguez A Duchateau M Mondino S Larrieux N Wunder Jr EA Ko AI Rey M Chamot-Rooke J Duran R Trajtenberg F Picardeau M Sindelar CV Buschiazzo A Core-sheath coupling controls flagellar curvature and motility in Leptospira. Nat Commun UK 17 2026 42649215 doi:10.1038/s41467-026-75995-6 2041-1723 10lk FULLOVERLAP EMDB EMD-75268 associated EM volume
Native flagellar filament from Leptospira interrogans
 Native flagellar filament Native flagellar filament 0 1 2 3 4 5 6 7 8 9 10 Leptospira interrogans serovar Copenhageni Fiocruz L1-130 Flagellin Leptospira interrogans serovar Copenhageni Fiocruz L1-130 0.031341467
part of the native flagellar filament assembly
64 LEVO MIINHNLAAINSHRVLKFQNNEVAKNMETLSSGMRINRAGDDASGLAVSEKMRTQVKGLRQAERNTEDGMSLIQTTEGYL QETNDIIQRIRVLAIQSSNGIYSAEDRQMIQVEVSQLVDEIDRIASQAEFNKMALLQGDFARGSRTSSMWFHIGPNQHQR ERVYIATMTAKSLNLIKADGSLLTLSTAEFANDAIGTLDDALMKINKQRANLGAYFNRLEHASKGLMVAYENIQASESRI RDTDMAEETVAFTKNQILVQSGTAMLAQANVRPQSVLQLLR Q72R58 Flagellar Coiling Protein A (FcpA) Leptospira interrogans serovar Copenhageni Fiocruz L1-130 0.036270336
Part or the native flagellar filament assembly
29 LEVO MSIMKVMKSIFILLAVLGLNLSVLAQQNNQGGNQQANESVEKIDELLKGELVPEDDDKNLTEEQKRRKKAIQEQEALWKN PDFKGYDKNFQELHQLSKAFANNKFRLALSNYQSGVNTILKMREAIEQYRKEEAEKKRLDEKWYWQKVDRKAREDRVVSR DKLVAKQQALNYFTKAINHLDEIKNPDLRERPEFKRLLSDTYRSWILTEYDLQNLPQCIPILELYIEIDENEKEYPAHKY LASCYAFEENMIKKNGGASEDQMFKYRYKKNVHLLRATELKYGKDSPEYKHIVNLVNKDEVISVRP Q72MM7 Flagellar Coiling Protein B (FcpB) Leptospira interrogans serovar Copenhageni Fiocruz L1-130 0.032067277
Part of the native flagellar filament assembly
17 LEVO MKLQKLFLAVLIAISTAVFSQQNSGSDQKSQPSSAQLGQSILETERKLDEKIFELNQRLTRHTVLMKMKVRVLPFRTVLF KGKANNDECTPAINQEDPANNCIRVEVYDFIRDEERGLNKNVQGALAKYMEIYFEGQNSNDPEPRTEPPRNINKLKSKIY KNNMVLEDKIISEVMDRGPNTQPSHNDKVEVFFQKDNYPEYGRPETPAEKGVGKYILAGVENTKTHPIRNSFKKEFYIKH LDQFDRLFTKIFDYNDQLGNENYKENVDALKDSLRY Q72RA0 Flagellar filament sheath protein Leptospira interrogans serovar Copenhageni Fiocruz L1-130 0.034930551
Part of the native flagellar filament assembly
8 LEVO MRRFMNSFKITAALTTILGGVILLGIVNGQNIIKGKRGIDTATGIDVSGLELRSITVESWDNPAPSAPYGWEVTTDKDTQ QPQGGQQQAYQATAQNAQALREVKLISGKPGDIKNVDAGTAKVLGVKFQFTYPGENAVTIRPPRIPEYEILRTKAYLDAN NQKKVSKIYGVEFPGVSKAMSVWVCGRGNEYNLEGWIEDWKGDTHILQFGSLDFIGWRPLTVYIPQGVPQDVNSYPQVKT IVFKQFKVRSRPDTSGETVYLFFDELRVLSDVFEVHFDGASIDFDDEDCRSKHKLDKMLKTKVEKECGGGGAAGK Q72U74 Flagellar filament sheath protein Leptospira interrogans serovar Copenhageni Fiocruz L1-130 0.027218983999999998
Part of the native flagellar filament assembly
10 LEVO MRKKIILLAGLLCILAVPGVYSQQTGNNQAGGNQQTGANPDPLEKLILENFEEAEDWRAKSTTPLGETKVLKMVQRGLIR DVFDENTVPDNGGDQIEKNHILGVKTNYTVRGFDRVEVFPPHEYVVKGKARQLSIWALGRKFRHTLFAKLRDYRGNTHNI RLGRLDYFGWRKLTATIPGFVPQSTRFALLDKNLHFVSLFVVSDVHEVGGQFYFYVDDLEVRADKSDAKYPGSEIKDNW Q72U75 FlaA2 associated protein 2 Leptospira interrogans serovar Copenhageni 0.033009527000000004 5 LEVO MKSFLRISVCLLLLFVGHTTFGQNAEKTDPNKKDGGTEYYPLAYYDERLSVKNISFFRRHSDNGKGEFLDVMVEMENRSF DPAKFSIYILAINETTSINPEKRDLVPFPKWRGFDLENNTFVINFQNLMPQKLEPKAVWGEEKYNKAKKDYDDRIARGEI VRMSNPSLTETVTYLTNHSENALEFTIFGEQGPKKDQVLISNFVDQTEEERKKQAHESLSKHTYTIYSAKYKTTLMSHHY TEYRPGYVTYNKVVVLIFNPLKEKNKLVYRRFIDIGGIKLLN A0AAV9FRP0 FlaA2-associated protein 1 (FlaAP) Leptospira interrogans serovar Copenhageni 0.043318246 4 LEVO MKRLILISILISILPVSVFGEAVSSKAYKKRVELLLYLRAIEPIVRNYKGEVPGGQNQQNTGATAANNQQTGGAPEQDGD RVKKYKELKRLYQEGLQYFFENNHVNAYRRFLEAQLGTEMLLEELSQFYVERTEEILKSAIEKKNPNNPEDRNLVDIAIE WSKNSFIVRDMTANREAPLTRRMYNPRDFHYVTNKYAIEKNMEMGYKFLGLAKETRNNALKIEKHLEKHQKLQPSHRKHR IEHYIAAIQLCRDARANAINIFKLKYPYDNYYLFKSDAKTEAIKDDEGKAGPSEPVSLNGVTYDFSQNPTLEYDHRMSPV FDRRIPEEYRRDAVDILEKIYDDEVKNRIFLKWDQEKRKQLMGDKAPNK Q72SU9 DUF4468 domain-containing protein Leptospira interrogans serovar Copenhageni 0.027492506 4 LEVO MEKSTMKEKLFYFLILISTFAGISSQEFEPDGKVKILPYEQGQIKDLEVLGKDIVEFHKRIESRLGFLNQRKQIQDNLYS QFIPAYEDQIPQSRNRYMLDLRFVLKVSGAGATNSPLKLESVVFWSRKSLISKMRPQYEEISILKNDKITNEGPNSIELV VRKKTDSGTKETVYNVATIREPAQRVKLVRIYRTNLLEIIRRIDKYVEGSIKNAAEDVETTLREVENGGPYQENPKE Q72NA0 Lipoprotein Leptospira interrogans serovar Copenhageni 0.01712867 3 LEVO MKKILAICLLFFFALFSLQAGKSQGVVEEFNKVEEYNKNVKLSDAAKKATLEKNLLSAVKYTLHHRYLEYKEITKDLNTD TMLYEPQKGTYTVYVKFKKYLFFYSFKMDPEIYLQTPENEVFYLRPENLDDPHKENTSAPDGKSGK Q72RW3 HEAT repeat domain-containing protein Leptospira interrogans serovar Copenhageni 0.033181207 3 LEVO MFKNISISIILFSISILPLFSSDKAIEYADRAYFEQIRKLESGSYEEKVDAADYLKFVNNKLAVRPLINALRGNPKIPKS LENHPYLKFTVAQALAVIDHVDAIKPTIEEYKKLEPTIQEKDEPYFTSREDYTMVIAAGEILRTIGSYPYMKESEEVLVN ALGHTNYYIRASAADGLKYMNRKETVNFLVSTLEKEKNEFTKAAILNAIVNIMKVADKSFYSLCDMLKSENPSVRYRTSM ALGEVDLKAAEFYLRQALLVEDKQNVRDQIRKDLASVLGFKLPTISVIFAE Q72MR9 CALCIUM ION 4.0078e-05 18 CA water 1.8015e-05 36 HOH singleParticle filament 7.6 ETHANE TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 1.5 3.0 GATAN K3 (6k x 4k) 61.5 1 PHASE FLIPPING AND AMPLITUDE CORRECTION 4.4 FSC 0.143 CUT-OFF cryoSPARC 4.2.1
Further Density Modification with Phenix Resolve increased resolution to 4.2 angstroems and better resolved features in the cryoEM map
35760 MAXIMUM LIKELIHOOD
projection matching
 MAXIMUM LIKELIHOOD emd_75268.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 0 0 0 256 256 256 273.408 273.408 273.408 90.0 90.0 90.0 Z Y X -0.23983586 0.4574863 -0.00000000000027 0.03954105 1.068 1.068 1.068 0.04 AUTHOR Other integrative model
we used comparative proteomics (wt and mutants) plus cross-linked+MS data; AlphaFold-redicted Initial models; and crystallographic structures
 FLEXIBLE FIT Coot 1.1.19
Refinement iterated between real space (phenix.real_space_refine) and reciprocal space (Servalcat)
Cross-correlation coefficient RECIPROCAL emd_75268_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 -61 -68 -64 256 256 256 273.408 273.408 273.408 90.0 90.0 90.0 X Y Z -1.1647775 1.453889 0.044035193 0.24422371 1.068 1.068 1.068 AUTHOR emd_75268_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 256 256 256 -61 -68 -64 256 256 256 273.408 273.408 273.408 90.0 90.0 90.0 X Y Z -1.1882551 1.4845164 0.043982226 0.24453153 1.068 1.068 1.068 AUTHOR