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Open data
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Basic information
| Entry | ![]() | |||||||||
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| Title | CP/MBL pathways C3 convertase C4b2a and C3 complex | |||||||||
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Keywords | CP/MBL pathways / C3 convertases and substrate / C4b2a_C3 complex / IMMUNE SYSTEM | |||||||||
| Function / homology | Function and homology informationclassical-complement-pathway C3/C5 convertase / detection of molecule of bacterial origin / symbiont cell surface / opsonization / C5L2 anaphylatoxin chemotactic receptor binding / oviduct epithelium development / regulation of triglyceride biosynthetic process / complement binding / positive regulation of activation of membrane attack complex / response to thyroid hormone ...classical-complement-pathway C3/C5 convertase / detection of molecule of bacterial origin / symbiont cell surface / opsonization / C5L2 anaphylatoxin chemotactic receptor binding / oviduct epithelium development / regulation of triglyceride biosynthetic process / complement binding / positive regulation of activation of membrane attack complex / response to thyroid hormone / vertebrate eye-specific patterning / positive regulation of apoptotic cell clearance / complement-mediated synapse pruning / Alternative complement activation / positive regulation of phagocytosis, engulfment / Activation of C3 and C5 / positive regulation of lipid storage / positive regulation of G protein-coupled receptor signaling pathway / positive regulation of type IIa hypersensitivity / complement receptor mediated signaling pathway / complement-dependent cytotoxicity / positive regulation of D-glucose transmembrane transport / complement activation / complement activation, alternative pathway / endopeptidase inhibitor activity / Initial triggering of complement / neuron remodeling / amyloid-beta clearance / B cell activation / positive regulation of vascular endothelial growth factor production / complement activation, classical pathway / Purinergic signaling in leishmaniasis infection / response to nutrient / Peptide ligand-binding receptors / Regulation of Complement cascade / Post-translational protein phosphorylation / response to bacterium / fatty acid metabolic process / positive regulation of receptor-mediated endocytosis / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / positive regulation of angiogenesis / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / positive regulation of protein phosphorylation / azurophil granule lumen / carbohydrate binding / secretory granule lumen / response to lipopolysaccharide / blood microparticle / G alpha (i) signalling events / immune response / receptor ligand activity / G protein-coupled receptor signaling pathway / endoplasmic reticulum lumen / inflammatory response / signaling receptor binding / axon / innate immune response / serine-type endopeptidase activity / synapse / dendrite / Neutrophil degranulation / cell surface / signal transduction / protein-containing complex / proteolysis / extracellular space / extracellular exosome / extracellular region / metal ion binding / plasma membrane Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
Authors | Yang XK / Xiao JY | |||||||||
| Funding support | China, 1 items
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Citation | Journal: Sci Adv / Year: 2026Title: Complement C3 Recognition by C3 Convertases Authors: Yang XK / Xiao JY | |||||||||
| History |
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_63894.map.gz | 168.3 MB | EMDB map data format | |
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| Header (meta data) | emd-63894-v30.xml emd-63894.xml | 20.9 KB 20.9 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_63894_fsc.xml | 11.8 KB | Display | FSC data file |
| Images | emd_63894.png | 52 KB | ||
| Filedesc metadata | emd-63894.cif.gz | 8.1 KB | ||
| Others | emd_63894_half_map_1.map.gz emd_63894_half_map_2.map.gz | 165.3 MB 165.3 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-63894 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-63894 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9u61MC ![]() 9u5zC ![]() 9u60C ![]() 9u62C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_63894.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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| Voxel size | X=Y=Z: 0.95 Å | ||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Half map: #2
| File | emd_63894_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #1
| File | emd_63894_half_map_2.map | ||||||||||||
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| Projections & Slices |
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| Density Histograms |
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Sample components
-Entire : CP/MBL pathways C3 convertases C4b2a and C3 complex
| Entire | Name: CP/MBL pathways C3 convertases C4b2a and C3 complex |
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| Components |
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-Supramolecule #1: CP/MBL pathways C3 convertases C4b2a and C3 complex
| Supramolecule | Name: CP/MBL pathways C3 convertases C4b2a and C3 complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 |
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| Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: Serine protease complement C2b
| Macromolecule | Name: Serine protease complement C2b / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: classical-complement-pathway C3/C5 convertase |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 57.491473 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: KIQIQRSGHL NLYLLLDCSQ SVSENDFLIF KESASLMVDR IFSFEINVSV AIITFASEPK VLMSVLNDNS RDMTEVISSL ENANYKDHE NGTGTNTYAA LNSVYLMMNN QMRLLGMETM AWQEIRHAII LLTDGKSNMG GSPKTAVDHI REILNINQKR N DYLDIYAI ...String: KIQIQRSGHL NLYLLLDCSQ SVSENDFLIF KESASLMVDR IFSFEINVSV AIITFASEPK VLMSVLNDNS RDMTEVISSL ENANYKDHE NGTGTNTYAA LNSVYLMMNN QMRLLGMETM AWQEIRHAII LLTDGKSNMG GSPKTAVDHI REILNINQKR N DYLDIYAI GVGKLDVDWR ELNELGSKKD GERHAFILQD TKALHQVFEH MLDVSKLTDT ICGVGNMSAN ASDQERTPWH VT IKPKSQE TCRGALISDQ WVLTAAHCFR DGNDHSLWRV NVGDPKSQWG KEFLIEKAVI SPGFDVFAKK NQGILEFYGD DIA LLKLAQ KVKMSTHARP ICLPCTMEAN LALRRPQGST CRDHENELLN KQSVPAHFVA LNGSKLNINL KMGVEWTSCA EVVS QEKTM FPNLTDVREV VTDQFLCSGT QEDESPCKGE SGGAVFLERR FRFFQVGLVS WGLYNPCLGS ADKNSRKRAP RSKVP PPRD FHINLFRMQP WLRQHLGDVL NFLPL UniProtKB: Complement C2 |
-Macromolecule #2: Complement C3
| Macromolecule | Name: Complement C3 / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 187.370969 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: MGPTSGPSLL LLLLTHLPLA LGSPMYSIIT PNILRLESEE TMVLEAHDAQ GDVPVTVTVH DFPGKKLVLS SEKTVLTPAT NHMGNVTFT IPANREFKSE KGRNKFVTVQ ATFGTQVVEK VVLVSLQSGY LFIQTDKTIY TPGSTVLYRI FTVNHKLLPV G RTVMVNIE ...String: MGPTSGPSLL LLLLTHLPLA LGSPMYSIIT PNILRLESEE TMVLEAHDAQ GDVPVTVTVH DFPGKKLVLS SEKTVLTPAT NHMGNVTFT IPANREFKSE KGRNKFVTVQ ATFGTQVVEK VVLVSLQSGY LFIQTDKTIY TPGSTVLYRI FTVNHKLLPV G RTVMVNIE NPEGIPVKQD SLSSQNQLGV LPLSWDIPEL VNMGQWKIRA YYENSPQQVF STEFEVKEYV LPSFEVIVEP TE KFYYIYN EKGLEVTITA RFLYGKKVEG TAFVIFGIQD GEQRISLPES LKRIPIEDGS GEVVLSRKVL LDGVQNPRAE DLV GKSLYV SATVILHSGS DMVQAERSGI PIVTSPYQIH FTKTPKYFKP GMPFDLMVFV TNPDGSPAYR VPVAVQGEDT VQSL TQGDG VAKLSINTHP SQKPLSITVR TKKQELSEAE QATRTMQALP YSTVGNSNNY LHLSVLRTEL RPGETLNVNF LLRMD RAHE AKIRYYTYLI MNKGRLLKAG RQVREPGQDL VVLPLSITTD FIPSFRLVAY YTLIGASGQR EVVADSVWVD VKDSCV GSL VVKSGQSEDR QPVPGQQMTL KIEGDHGARV VLVAVDKGVF VLNKKNKLTQ SKIWDVVEKA DIGCTPGSGK DYAGVFS DA GLTFTSSSGQ QTAQRAELQC PQPAARRRRS VQLTEKRMDK VGKYPKELRK CCEDGMRENP MRFSCQRRTR FISLGEAC K KVFLDCCNYI TELRRQHARA SHLGLARSNL DEDIIAEENI VSRSEFPESW LWNVEDLKEP PKNGISTKLM NIFLKDSIT TWEILAVSMS DKKGICVADP FEVTVMQDFF IDLRLPYSVV RNEQVEIRAV LYNYRQNQEL KVRVELLHNP AFCSLATTKR RHQQTVTIP PKSSLSVPYV IVPLKTGLQE VEVKAAVYHH FISDGVRKSL KVVPEGIRMN KTVAVRTLDP ERLGREGVQK E DIPPADLS DQVPDTESET RILLQGTPVA QMTEDAVDAE RLKHLIVTPS GCGEQNMIGM TPTVIAVHYL DETEQWEKFG LE KRQGALE LIKKGYTQQL AFRQPSSAFA AFVKRAPSTW LTAYVVKVFS LAVNLIAIDS QVLCGAVKWL ILEKQKPDGV FQE DAPVIH QEMIGGLRNN NEKDMALTAF VLISLQEAKD ICEEQVNSLP GSITKAGDFL EANYMNLQRS YTVAIAGYAL AQMG RLKGP LLNKFLTTAK DKNRWEDPGK QLYNVEATSY ALLALLQLKD FDFVPPVVRW LNEQRYYGGG YGSTQATFMV FQALA QYQK DAPDHQELNL DVSLQLPSRS SKITHRIHWE SASLLRSEET KENEGFTVTA EGKGQGTLSV VTMYHAKAKD QLTCNK FDL KVTIKPAPET EKRPQDAKNT MILEICTRYR GDQDATMSIL DISMMTGFAP DTDDLKQLAN GVDRYISKYE LDKAFSD RN TLIIYLDKVS HSEDDCLAFK VHQYFNVELI QPGAVKVYAY YNLEESCTRF YHPEKEDGKL NKLCRDELCR CAEENCFI Q KSDDKVTLEE RLDKACEPGV DYVYKTRLVK VQLSNDFDEY IMAIEQTIKS GSDEVQVGQQ RTFISPIKCR EALKLEEKK HYLMWGLSSD FWGEKPNLSY IIGKDTWVEH WPEEDECQDE ENQKQCQDLG AFTESMVVFG CPN UniProtKB: Complement C3 |
-Macromolecule #3: Complement C4-B
| Macromolecule | Name: Complement C4-B / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 192.975188 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: MRLLWGLIWA SSFFTLSLQK PRLLLFSPSV VHLGVPLSVG VQLQDVPRGQ VVKGSVFLRN PSRNNVPCSP KVDFTLSSER DFALLSLQV PLKDAKSCGL HQLLRGPEVQ LVAHSPWLKD SLSRTTNIQG INLLFSSRRG HLFLQTDQPI YNPGQRVRYR V FALDQKMR ...String: MRLLWGLIWA SSFFTLSLQK PRLLLFSPSV VHLGVPLSVG VQLQDVPRGQ VVKGSVFLRN PSRNNVPCSP KVDFTLSSER DFALLSLQV PLKDAKSCGL HQLLRGPEVQ LVAHSPWLKD SLSRTTNIQG INLLFSSRRG HLFLQTDQPI YNPGQRVRYR V FALDQKMR PSTDTITVMV ENSHGLRVRK KEVYMPSSIF QDDFVIPDIS EPGTWKISAR FSDGLESNSS TQFEVKKYVL PN FEVKITP GKPYILTVPG HLDEMQLDIQ ARYIYGKPVQ GVAYVRFGLL DEDGKKTFFR GLESQTKLVN GQSHISLSKA EFQ DALEKL NMGITDLQGL RLYVAAAIIE SPGGEMEEAE LTSWYFVSSP FSLDLSKTKR HLVPGAPFLL QALVREMSGS PASG IPVKV SATVSSPGSV PEVQDIQQNT DGSGQVSIPI IIPQTISELQ LSVSAGSPHP AIARLTVAAP PSGGPGFLSI ERPDS RPPR VGDTLNLNLR AVGSGATFSH YYYMILSRGQ IVFMNREPKR TLTSVSVFVD HHLAPSFYFV AFYYHGDHPV ANSLRV DVQ AGACEGKLEL SVDGAKQYRN GESVKLHLET DSLALVALGA LDTALYAAGS KSHKPLNMGK VFEAMNSYDL GCGPGGG DS ALQVFQAAGL AFSDGDQWTL SRKRLSCPKE KTTRKKRNVN FQKAINEKLG QYASPTAKRC CQDGVTRLPM MRSCEQRA A RVQQPDCREP FLSCCQFAES LRKKSRDKGQ AGLQRALEIL QEEDLIDEDD IPVRSFFPEN WLWRVETVDR FQILTLWLP DSLTTWEIHG LSLSKTKGLC VATPVQLRVF REFHLHLRLP MSVRRFEQLE LRPVLYNYLD KNLTVSVHVS PVEGLCLAGG GGLAQQVLV PAGSARPVAF SVVPTAATAV SLKVVARGSF EFPVGDAVSK VLQIEKEGAI HREELVYELN PLDHRGRTLE I PGNSDPNM IPDGDFNSYV RVTASDPLDT LGSEGALSPG GVASLLRLPR GCGEQTMIYL APTLAASRYL DKTEQWSTLP PE TKDHAVD LIQKGYMRIQ QFRKADGSYA AWLSRGSSTW LTAFVLKVLS LAQEQVGGSP EKLQETSNWL LSQQQADGSF QDL SPVIHR SMQGGLVGND ETVALTAFVT IALHHGLAVF QDEGAEPLKQ RVEASISKAS SFLGEKASAG LLGAHAAAIT AYAL TLTKA PADLRGVAHN NLMAMAQETG DNLYWGSVTG SQSNAVSPTP APRNPSDPMP QAPALWIETT AYALLHLLLH EGKAE MADQ AAAWLTRQGS FQGGFRSTQD TVIALDALSA YWIASHTTEE RGLNVTLSST GRNGFKSHAL QLNNRQIRGL EEELQF SLG SKINVKVGGN SKGTLKVLRT YNVLDMKNTT CQDLQIEVTV KGHVEYTMEA NEDYEDYEYD ELPAKDDPDA PLQPVTP LQ LFEGRRNRRR REAPKVVEEQ ESRVHYTVCI WRNGKVGLSG MAIADVTLLS GFHALRADLE KLTSLSDRYV SHFETEGP H VLLYFDSVPT SRECVGFEAV QEVPVGLVQP ASATLYDYYN PERRCSVFYG APSKSRLLAT LCSAEVCQCA EGKCPRQRR ALERGLQDED GYRMKFACYY PRVEYGFQVK VLREDSRAAF RLFETKITQV LHFTKDVKAA ANQMRNFLVR ASCRLRLEPG KEYLIMGLD GATYDLEGHP QYLLDSNSWI EEMPSERLCR STRQRAACAQ LNDFLQEYGT QGCQV UniProtKB: Complement C4-B |
-Macromolecule #6: 2-acetamido-2-deoxy-beta-D-glucopyranose
| Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 6 / Number of copies: 4 / Formula: NAG |
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| Molecular weight | Theoretical: 221.208 Da |
| Chemical component information | ![]() ChemComp-NAG: |
-Macromolecule #7: NICKEL (II) ION
| Macromolecule | Name: NICKEL (II) ION / type: ligand / ID: 7 / Number of copies: 1 / Formula: NI |
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| Molecular weight | Theoretical: 58.693 Da |
| Chemical component information | ![]() ChemComp-NI: |
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 7.5 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | FEI TALOS ARCTICA |
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| Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Average electron dose: 60.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: SPOT SCAN / Imaging mode: DIFFRACTION / Nominal defocus max: 1.5 µm / Nominal defocus min: 1.1 µm |
| Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
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About Yorodumi




Keywords
Homo sapiens (human)
Authors
China, 1 items
Citation




























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Processing
FIELD EMISSION GUN
