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9QY8

Crystal structure of apoform human USP18

Functional Information from PROSITE/UniProt
site_idPS00972
Number of Residues16
DetailsUSP_1 Ubiquitin specific protease (USP) domain signature 1. GLhniGQtCCLNSlIQ
ChainResidueDetails
AGLY56-GLN71

site_idPS00973
Number of Residues18
DetailsUSP_2 Ubiquitin specific protease (USP) domain signature 2. YeLfAViaHvGmads..GHY
ChainResidueDetails
ATYR302-TYR319

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI2
Number of Residues122
DetailsRegion: {"description":"Mediates interaction with STAT2","evidences":[{"source":"PubMed","id":"28165510","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues18
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_FI4
Number of Residues118
DetailsRegion: {"description":"Mediates interaction with IFNAR2","evidences":[{"source":"PubMed","id":"28165510","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
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_FI6
Number of Residues2
DetailsActive site: {"description":"Proton acceptor","evidences":[{"source":"PROSITE-ProRule","id":"PRU10092","evidenceCode":"ECO:0000255"},{"source":"PROSITE-ProRule","id":"PRU10093","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

255900

PDB entries from 2026-07-01

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