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1MEK

HUMAN PROTEIN DISULFIDE ISOMERASE, NMR, 40 STRUCTURES

Functional Information from GO Data
ChainGOidnamespacecontents
A0003756molecular_functionprotein disulfide isomerase activity
Functional Information from PROSITE/UniProt
site_idPS00194
Number of Residues19
DetailsTHIOREDOXIN_1 Thioredoxin family active site. LVeFYapWCGHCKaLapeY
ChainResidueDetails
ALEU28-TYR46

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues116
DetailsDomain: {"description":"Thioredoxin 1","evidences":[{"source":"PROSITE-ProRule","id":"PRU00691","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues2
DetailsActive site: {"description":"Nucleophile"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsSite: {"description":"Contributes to redox potential value"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsSite: {"description":"Lowers pKa of C-terminal Cys of first active site"}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues4
Detailsa catalytic site defined by CSA, PubMed 8527452, 8672469, 16142915
ChainResidueDetails
ACYS36
ACYS39
AGLY37
AHIS38

site_idMCSA1
Number of Residues4
DetailsM-CSA 191
ChainResidueDetails
ACYS36nucleofuge, nucleophile, proton acceptor, proton donor
AGLY37activator, modifies pKa
AHIS38modifies pKa, proton acceptor, proton donor
ACYS39

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PDB entries from 2025-07-30

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