UniProt:O00391 QSOX1

chain
  • signal peptide:1-29
  • chain:30-747
checksum 52639D09A50E00C5
comment
  • FUNCTION Catalyzes the oxidation of sulfhydryl groups in peptide and protein thiols to disulfides with the reduction of oxygen to hydrogen peroxide (PubMed:17331072, PubMed:18393449, PubMed:23704371, PubMed:23867277, PubMed:30367560). Plays a role in disulfide bond formation in a variety of extracellular proteins (PubMed:17331072, PubMed:22801504, PubMed:23867277, PubMed:30367560). In fibroblasts, required for normal incorporation of laminin into the extracellular matrix, and thereby for normal cell-cell adhesion and cell migration (PubMed:23704371, PubMed:23867277, PubMed:30367560).CATALYTIC ACTIVITY 2 R'C(R)SH + O2 = R'C(R)S-S(R)CR' + H2O2COFACTOR Binds 1 FAD per subunit.SUBUNIT Monomer.SUBCELLULAR LOCATION A small proportion is secreted, probably via a proteolytic cleavage that removes the membrane anchor.SUBCELLULAR LOCATION Found in the extracellular medium of quiescent cells but is not found in proliferating cells.ALTERNATIVE PRODUCTS Expressed in heart, placenta, lung, liver, skeletal muscle, pancreas and very weakly in brain and kidney.INDUCTION Induced in quiescent cells just as fibroblasts begin to leave the proliferative cycle and enter quiescence.PTM N-glycosylated (PubMed:17331072, PubMed:29757379). O-glycosylated on Thr and Ser residues (PubMed:29757379).MISCELLANEOUS 'Quiescin Q6' means that it was the sixth clone to be found at a higher level of expression in quiescent fibroblasts.SIMILARITY Belongs to the quiescin-sulfhydryl oxidase (QSOX) family.SEQUENCE CAUTION Extended N-terminus.
created [InstanceEdit:217385] Schmidt, EE, 2008-03-27 06:23:53
crossReference
databaseName UniProt
dbId 244553
description
  • recommendedName: Sulfhydryl oxidase 1 shortName: hQSOX ecNumber evidence="10 13 14 15 17 18 19"1.8.3.2 alternativeName: fullName evidence="23 28"Quiescin Q6
displayName UniProt:O00391 QSOX1
geneName
  • QSOX1
  • QSCN6
  • UNQ2520/PRO6013
identifier O00391
isSequenceChanged false
keyword
  • 3D-structure
  • Alternative splicing
  • Disulfide bond
  • FAD
  • Flavoprotein
  • Glycoprotein
  • Golgi apparatus
  • Membrane
  • Oxidoreductase
  • Phosphoprotein
  • Proteomics identification
  • Reference proteome
  • Secreted
  • Signal
  • Transmembrane
  • Transmembrane helix
modified [InstanceEdit:9939033] Weiser, Joel, 2025-02-21
moleculeType Protein
name
  • QSOX1
otherIdentifier
  • 11715556_a_at
  • 11715557_at
  • 1257_s_at
  • 16674521
  • 201482_PM_at
  • 201482_at
  • 226706_PM_at
  • 226706_at
  • 230523_PM_at
  • 230523_at
  • 2369961
  • 2369962
  • 2369963
  • 2369964
  • 2369969
  • 2369978
  • 2369979
  • 2369986
  • 2369989
  • 2369994
  • 2369995
  • 2370002
  • 2370003
  • 2370005
  • 2370006
  • 2370007
  • 2370008
  • 2370009
  • 2370010
  • 2370011
  • 2370012
  • 2370013
  • 2370014
  • 2370015
  • 2370016
  • 2370017
  • 2370018
  • 2370024
  • 2370025
  • 2370026
  • 2370027
  • 2370029
  • 2370031
  • 56644_at
  • 56685_at
  • 5768
  • 63645_at
  • 7907830
  • ADDON002362.hg
  • A_14_P138336
  • A_23_P12463
  • A_23_P380266
  • A_23_P380271
  • A_33_P3220475
  • A_33_P3225268
  • A_33_P3225273
  • GE522835
  • GE59607
  • GE840329
  • GE864856
  • GO:0000139
  • GO:0003756
  • GO:0003824
  • GO:0005576
  • GO:0005615
  • GO:0005788
  • GO:0005794
  • GO:0006457
  • GO:0016020
  • GO:0016242
  • GO:0016491
  • GO:0016853
  • GO:0016971
  • GO:0016972
  • GO:0030198
  • GO:0031093
  • GO:0035580
  • GO:0070062
  • GO:0071949
  • GO:0085029
  • GO:0140096
  • GO:1904724
  • HMNXSV003025313
  • HMNXSV003029963
  • Hs.28456.0.A1_3p_at
  • Hs.77266.1.A1_3p_at
  • Hs.77266.1.A1_3p_x_at
  • ILMN_1758229
  • ILMN_2411282
  • L42379_at
  • PH_hs_0004450
  • PH_hs_0036301
  • PH_hs_0036538
  • TC01001559.hg
  • TC01004863.hg
  • g13325074_3p_at
  • p24815
physicalEntity
referenceDatabase [ReferenceDatabase:2] UniProt
referenceGene
referenceTranscript
schemaClass ReferenceGeneProduct
secondaryIdentifier
  • QSOX1_HUMAN
  • Q59G29
  • Q5T2X0
  • Q8TDL6
  • Q8WVP4
sequenceLength 747
species [Species:48887] Homo sapiens
stId uniprot:O00391
url http://purl.uniprot.org/uniprot/O00391
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