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1Q2W

X-Ray Crystal Structure of the SARS Coronavirus Main Protease

Functional Information from GO Data
ChainGOidnamespacecontents
A0008233molecular_functionpeptidase activity
A0019082biological_processviral protein processing
B0008233molecular_functionpeptidase activity
B0019082biological_processviral protein processing
Functional Information from PDB Data
site_idAC1
Number of Residues8
DetailsBINDING SITE FOR RESIDUE MPD A 307
ChainResidue
APRO108
AILE200
ALEU202
AGLU240
AHOH314
AHOH331
AHOH349
AHOH373

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsActive site: {"description":"For 3CL-PRO activity","evidences":[{"source":"PROSITE-ProRule","id":"PRU00772","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 2bx4
ChainResidueDetails
ACYS145
AHIS41

site_idCSA2
Number of Residues2
DetailsAnnotated By Reference To The Literature 2bx4
ChainResidueDetails
BCYS145
BHIS41

site_idMCSA1
Number of Residues3
DetailsM-CSA 830
ChainResidueDetails
AHIS41proton acceptor, proton donor
AGLY143electrostatic stabiliser
ACYS145electrostatic stabiliser

site_idMCSA2
Number of Residues3
DetailsM-CSA 830
ChainResidueDetails
BHIS41proton acceptor, proton donor
BGLY143electrostatic stabiliser
BCYS145electrostatic stabiliser

250059

PDB entries from 2026-03-04

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