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5E4W

Crystal structure of cpSRP43 chromodomains 2 and 3 in complex with the Alb3 tail

Functional Information from GO Data
ChainGOidnamespacecontents
A0005737cellular_componentcytoplasm
A0005829cellular_componentcytosol
A0015035molecular_functionprotein-disulfide reductase activity
A0045454biological_processcell redox homeostasis
B0005737cellular_componentcytoplasm
B0005829cellular_componentcytosol
B0015035molecular_functionprotein-disulfide reductase activity
B0045454biological_processcell redox homeostasis
Functional Information from PDB Data
site_idAC1
Number of Residues4
Detailsbinding site for residue GOL B 201
ChainResidue
BPRO74
BGLY75
BGLY107
BGLU111

site_idAC2
Number of Residues6
Detailsbinding site for residue CA C 401
ChainResidue
CHOH514
CGLU268
CGLU323
CHOH507
CHOH508
CHOH513

site_idAC3
Number of Residues5
Detailsbinding site for residue GOL D 401
ChainResidue
DTYR269
DALA270
DVAL272
DALA306
DASP308

site_idAC4
Number of Residues3
Detailsbinding site for residue CA D 402
ChainResidue
AHOH202
DGLU268
DHOH503

Functional Information from PROSITE/UniProt
site_idPS00194
Number of Residues19
DetailsTHIOREDOXIN_1 Thioredoxin family active site. LVdFWaeWCGPCKmIapiL
ChainResidueDetails
ALEU34-LEU52

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsActive site: {"description":"Nucleophile","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues2
DetailsSite: {"description":"Deprotonates C-terminal active site Cys","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsSite: {"description":"Contributes to redox potential value","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues100
DetailsDomain: {"description":"Chromo 2","evidences":[{"source":"PROSITE-ProRule","id":"PRU00053","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

246333

PDB entries from 2025-12-17

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