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2B5E

Crystal Structure of Yeast Protein Disulfide Isomerase

Functional Information from GO Data
ChainGOidnamespacecontents
A0003756molecular_functionprotein disulfide isomerase activity
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE BA A 1
ChainResidue
AGLU123
AGLU194
AHOH555
AHOH599

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE GOL A 523
ChainResidue
AGLU272
ALEU344
AGLU345
ASER346

site_idAC3
Number of Residues3
DetailsBINDING SITE FOR RESIDUE GOL A 524
ChainResidue
AHIS100
ASER119
AGLU99

Functional Information from PROSITE/UniProt
site_idPS00014
Number of Residues4
DetailsER_TARGET Endoplasmic reticulum targeting sequence. HDEL
ChainResidueDetails
AHIS519-LEU522

site_idPS00194
Number of Residues19
DetailsTHIOREDOXIN_1 Thioredoxin family active site. LAeFFapWCGHCKnMapeY
ChainResidueDetails
ALEU53-TYR71
ALEU398-TYR416

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsACT_SITE: Nucleophile => ECO:0000250
ChainResidueDetails
ACYS61
ACYS64
ACYS406
ACYS409

site_idSWS_FT_FI2
Number of Residues4
DetailsSITE: Contributes to redox potential value => ECO:0000250
ChainResidueDetails
AGLY62
AHIS63
AGLY407
AHIS408

site_idSWS_FT_FI3
Number of Residues1
DetailsSITE: Lowers pKa of C-terminal Cys of first active site => ECO:0000250
ChainResidueDetails
AARG126

site_idSWS_FT_FI4
Number of Residues1
DetailsSITE: Lowers pKa of C-terminal Cys of second active site => ECO:0000250
ChainResidueDetails
AARG471

site_idSWS_FT_FI5
Number of Residues5
DetailsCARBOHYD: N-linked (GlcNAc...) asparagine => ECO:0000255
ChainResidueDetails
AASN82
AASN117
AASN155
AASN174
AASN425

Catalytic Information from CSA
site_idCSA1
Number of Residues4
DetailsAnnotated By Reference To The Literature 1mek
ChainResidueDetails
ACYS61
ACYS64
AGLY62
AHIS63

site_idCSA2
Number of Residues4
DetailsAnnotated By Reference To The Literature 1mek
ChainResidueDetails
AHIS408
ACYS406
AGLY407
ACYS409

site_idCSA3
Number of Residues2
DetailsAnnotated By Reference To The Literature 1mek
ChainResidueDetails
ACYS61
ACYS64

site_idCSA4
Number of Residues2
DetailsAnnotated By Reference To The Literature 1mek
ChainResidueDetails
ACYS406
ACYS409

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PDB entries from 2025-06-11

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