2026-02-04 REL PDBe INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY INITIAL_RELEASE REPOSITORY DATABASE_REFERENCES citation citation_author em_admin _citation.journal_abbrev _citation.journal_id_CSD _citation.journal_id_ISSN _citation.pdbx_database_id_DOI _citation.pdbx_database_id_PubMed _citation.title _citation.year _em_admin.last_update EXPERIMENTAL_SUMMARY citation citation_author em_admin _citation.journal_abbrev _citation.journal_id_CSD _citation.journal_id_ISSN _citation.pdbx_database_id_DOI _citation.pdbx_database_id_PubMed _citation.title _citation.year _em_admin.last_update DATABASE_REFERENCES citation em_admin _citation.journal_volume _citation.page_first _citation.year _em_admin.last_update EXPERIMENTAL_SUMMARY citation em_admin _citation.journal_volume _citation.page_first _citation.year _em_admin.last_update PDBe PDBe 2024-10-09 2025-10-29 2025-10-29 2026-02-04 Swiss National Science Foundation 31003A_166608 Switzerland Cryo-EM structure of taxol-microtubules in complex with the C1 domain of GEFH1 Choi SR Blum T Steinmetz MO RhoGEF, C1, Cytoskeleton, Complex, SIGNALING PROTEIN Choi SR Blum TB Giono M Roy B Vakonakis I Schmid D Oelgarth N Ranganathan A Gossert AD Shivashankar GV Zippelius A Steinmetz MO Structural basis of microtubule-mediated signal transduction. Cell 189 461 2026 41365297 doi:10.1016/j.cell.2025.11.011 1097-4172 9h1o FULLOVERLAP EMDB EMD-51768 associated EM volume
Cryo-EM structure of taxol-microtubules in complex with the C1 domain of GEFH1
 The C1 domain of GEFH1 in complex with microtubule The C1 domain of GEFH1 in complex with microtubule 0 1 2 3 C1 domain of GEFH1 1 1 Homo sapiens Tubulin alpha 1B 1 2 Bos taurus Tubulin beta 2B 1 3 Bos taurus Rho guanine nucleotide exchange factor 2 Homo sapiens 0.008250749
C1 domain of GEFH1
1 Escherichia coli BL21(DE3) LEVO GPMKEAKDARYTNGHLFTTISVSGMTMCYACNKSITAKEALICPTCNVTIHNRCKDTLANCTKVKQKQQKAALLK Q92974 Tubulin alpha-1B chain Bos taurus 0.050204445 2 LEVO MRECISIHVGQAGVQIGNACWELYCLEHGIQPDGQMPSDKTIGGGDDSFNTFFSETGAGKHVPRAVFVDLEPTVIDEVRT GTYRQLFHPEQLITGKEDAANNYARGHYTIGKEIIDLVLDRIRKLADQCTGLQGFLVFHSFGGGTGSGFTSLLMERLSVD YGKKSKLEFSIYPAPQVSTAVVEPYNSILTTHTTLEHSDCAFMVDNEAIYDICRRNLDIERPTYTNLNRLISQIVSSITA SLRFDGALNVDLTEFQTNLVPYPRIHFPLATYAPVISAEKAYHEQLSVAEITNACFEPANQMVKCDPRHGKYMACCLLYR GDVVPKDVNAAIATIKTKRSIQFVDWCPTGFKVGINYQPPTVVPGGDLAKVQRAVCMLSNTTAIAEAWARLDHKFDLMYA KRAFVHWYVGEGMEEGEFSEAREDMAALEKDYEEVGVDSVEGEGEEEGEEY P81947 Tubulin beta-2B chain Bos taurus 0.049983823999999996 4 LEVO MREIVHIQAGQCGNQIGAKFWEVISDEHGIDPTGSYHGDSDLQLERINVYYNEATGNKYVPRAILVDLEPGTMDSVRSGP FGQIFRPDNFVFGQSGAGNNWAKGHYTEGAELVDSVLDVVRKESESCDCLQGFQLTHSLGGGTGSGMGTLLISKIREEYP DRIMNTFSVMPSPKVSDTVVEPYNATLSVHQLVENTDETYSIDNEALYDICFRTLKLTTPTYGDLNHLVSATMSGVTTCL RFPGQLNADLRKLAVNMVPFPRLHFFMPGFAPLTSRGSQQYRALTVPELTQQMFDSKNMMAACDPRHGRYLTVAAIFRGR MSMKEVDEQMLNVQNKNSSYFVEWIPNNVKTAVCDIPPRGLKMSATFIGNSTAIQELFKRISEQFTAMFRRKAFLHWYTG EGMDEMEFTEAESNMNDLVSEYQQYQDATADEQGEFEEEEGEDEA Q6B856 ZINC ION 6.5409e-05 2 ZN GUANOSINE-5'-TRIPHOSPHATE 0.0005231799999999999 2 GTP MAGNESIUM ION 2.4305e-05 2 MG GUANOSINE-5'-DIPHOSPHATE 0.000443201 4 GDP TAXOL 0.0008539059999999999 4 TA1 singleParticle particle 2 6.9 80.0 C8H18N2O6S2 PIPES 1.0 MgCl2 Magnesium Chloride 1.0 C14H24N2O10 EGTA
BRB80 buffer 80mM PIPES, 1mM MgCl2, 1mM EGTA, pH 6.9
 Quantifoil R2/1 COPPER 200 CARBON HOLEY 12.0 GLOW DISCHARGE ETHANE 100 298 FEI VITROBOT MARK IV
C1 domain of GEFH1 was in complex with microtubules
 TFS KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 1.0 3.0 GATAN K2 BASE (4k x 4k) 60.0 1 RELION 3.0.8 GCTF PHASE FLIPPING AND AMPLITUDE CORRECTION
In-house model of 13pf-microtubule
 3.4 FSC 0.143 CUT-OFF RELION 326559 MAXIMUM LIKELIHOOD RELION 3.0.8 MAXIMUM LIKELIHOOD RELION 3.0.8 emd_51768.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 160 160 160 0 0 0 160 160 160 169.28 169.28 169.28 90.0 90.0 90.0 X Y Z -0.0003189909 1.6447606 0.025862684 0.103441164 1.058 1.058 1.058 0.256 AUTHOR Cryo-EM reconstruction of the C1 domain of GEFH1 in complex with taxol-stabilized 13 protofilament microtubule RIGID BODY FIT emd_51768_half_map_1.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 160 160 160 0 0 0 160 160 160 169.28 169.28 169.28 90.0 90.0 90.0 X Y Z -0.045064345 0.06699491 -0.00035418247 0.0054716617 1.058 1.058 1.058 AUTHOR Half map 1: Cryo-EM reconstruction of the C1 domain of GEFH1 in complex with taxol-stabilized 13 protofilament microtubule emd_51768_half_map_2.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 160 160 160 0 0 0 160 160 160 169.28 169.28 169.28 90.0 90.0 90.0 X Y Z -0.046586346 0.070531555 -0.00034454942 0.0054835905 1.058 1.058 1.058 AUTHOR Half map 2: Cryo-EM reconstruction of the C1 domain of GEFH1 in complex with taxol-stabilized 13 protofilament microtubule