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2QQH

Structure of C8a-MACPF reveals mechanism of membrane attack in complement immune defense

Functional Information from GO Data
ChainGOidnamespacecontents
A0005579cellular_componentmembrane attack complex
A0006956biological_processcomplement activation
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SO4 A 1
ChainResidue
AGLY118
ASER119
AGLN120
ALYS121
AHOH515
AHOH531

site_idAC2
Number of Residues1
DetailsBINDING SITE FOR RESIDUE SO4 A 466
ChainResidue
AARG394

site_idAC3
Number of Residues4
DetailsBINDING SITE FOR RESIDUE SO4 A 467
ChainResidue
AHIS440
AHOH542
ALYS275
AARG439

site_idAC4
Number of Residues5
DetailsBINDING SITE FOR RESIDUE NI A 500
ChainResidue
AHIS186
AGLU188
AHIS270
AHOH524
AHOH529

Functional Information from PROSITE/UniProt
site_idPS00279
Number of Residues12
DetailsMACPF_1 Membrane attack complex/perforin (MACPF) domain signature. YakfindYGTHY
ChainResidueDetails
ATYR300-TYR311

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues15
DetailsTransmembrane: {"description":"Beta stranded","evidences":[{"source":"PubMed","id":"30552328","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"6H04","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"source":"PubMed","id":"16335952","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"19159218","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"30552328","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

246333

PDB entries from 2025-12-17

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