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9ZFO

Cryo-EM Structure of Human STAT2-USP18-ISG15 Complex

Functional Information from PROSITE/UniProt
site_idPS00972
Number of Residues16
DetailsUSP_1 Ubiquitin specific protease (USP) domain signature 1. GLhniGQtCCLNSlIQ
ChainResidueDetails
UGLY56-GLN71

site_idPS00973
Number of Residues18
DetailsUSP_2 Ubiquitin specific protease (USP) domain signature 2. YeLfAViaHvGmads..GHY
ChainResidueDetails
UTYR302-TYR319

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues61
DetailsRegion: {"description":"Mediates interaction with STAT2","evidences":[{"source":"PubMed","id":"28165510","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues9
DetailsRegion: {"description":"Mediates interaction with STAT2 and necessary for the negative regulation of the type I IFN signaling pathway","evidences":[{"source":"PubMed","id":"28165510","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsActive site: {"description":"Nucleophile","evidences":[{"source":"PROSITE-ProRule","id":"PRU10092","evidenceCode":"ECO:0000255"},{"source":"PROSITE-ProRule","id":"PRU10093","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsActive site: {"description":"Proton acceptor","evidences":[{"source":"PROSITE-ProRule","id":"PRU10092","evidenceCode":"ECO:0000255"},{"source":"PROSITE-ProRule","id":"PRU10093","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"23139419","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"23139419","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues4
DetailsRegion: {"description":"Involved in the ligation of specific target proteins","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues5
DetailsMotif: {"description":"LRLRGG"}
ChainResidueDetails

site_idSWS_FT_FI9
Number of Residues1
DetailsSite: {"description":"Interacts with activating enzyme","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI10
Number of Residues2
DetailsCross-link: {"description":"Glycyl lysine isopeptide (Gly-Lys) (interchain with K-? in acceptor proteins)","evidences":[{"source":"PROSITE-ProRule","id":"PRU00214","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

250835

PDB entries from 2026-03-18

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