ID QSOX1_HUMAN Reviewed; 747 AA. AC O00391; Q59G29; Q5T2X0; Q8TDL6; Q8WVP4; DT 19-SEP-2006, integrated into UniProtKB/Swiss-Prot. DT 01-JUN-2001, sequence version 3. DT 19-FEB-2014, entry version 121. DE RecName: Full=Sulfhydryl oxidase 1; DE Short=hQSOX; DE EC=1.8.3.2; DE AltName: Full=Quiescin Q6; DE Flags: Precursor; GN Name=QSOX1; Synonyms=QSCN6; ORFNames=UNQ2520/PRO6013; OS Homo sapiens (Human). OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; OC Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; OC Catarrhini; Hominidae; Homo. OX NCBI_TaxID=9606; RN [1] RP NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), AND INDUCTION. RC TISSUE=Lung; RX PubMed=9878249; DOI=10.1006/geno.1998.5605; RA Coppock D.L., Cina-Poppe D., Gilleran S.; RT "The quiescin Q6 gene (QSCN6) is a fusion of two ancient gene RT families: thioredoxin and ERV1."; RL Genomics 54:460-468(1998). RN [2] RP NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2), FUNCTION, AND VARIANTS ALA-200 RP AND ARG-444. RC TISSUE=Placenta; RX PubMed=16806532; DOI=10.1016/j.bbaexp.2006.04.008; RA Radom J., Colin D., Thiebault F., Dognin-Bergeret M.J., RA Mairet-Coello G., Esnard-Feve A., Fellmann D., Jouvenot M.; RT "Identification and expression of a new splicing variant of FAD- RT sulfhydryl oxidase in adult rat brain."; RL Biochim. Biophys. Acta 1759:225-233(2006). RN [3] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). RX PubMed=12975309; DOI=10.1101/gr.1293003; RA Clark H.F., Gurney A.L., Abaya E., Baker K., Baldwin D.T., Brush J., RA Chen J., Chow B., Chui C., Crowley C., Currell B., Deuel B., Dowd P., RA Eaton D., Foster J.S., Grimaldi C., Gu Q., Hass P.E., Heldens S., RA Huang A., Kim H.S., Klimowski L., Jin Y., Johnson S., Lee J., RA Lewis L., Liao D., Mark M.R., Robbie E., Sanchez C., Schoenfeld J., RA Seshagiri S., Simmons L., Singh J., Smith V., Stinson J., Vagts A., RA Vandlen R.L., Watanabe C., Wieand D., Woods K., Xie M.-H., RA Yansura D.G., Yi S., Yu G., Yuan J., Zhang M., Zhang Z., Goddard A.D., RA Wood W.I., Godowski P.J., Gray A.M.; RT "The secreted protein discovery initiative (SPDI), a large-scale RT effort to identify novel human secreted and transmembrane proteins: a RT bioinformatics assessment."; RL Genome Res. 13:2265-2270(2003). RN [4] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1), AND VARIANT RP ALA-200. RC TISSUE=Brain; RA Totoki Y., Toyoda A., Takeda T., Sakaki Y., Tanaka A., Yokoyama S., RA Ohara O., Nagase T., Kikuno R.F.; RL Submitted (MAR-2005) to the EMBL/GenBank/DDBJ databases. RN [5] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RX PubMed=16710414; DOI=10.1038/nature04727; RA Gregory S.G., Barlow K.F., McLay K.E., Kaul R., Swarbreck D., RA Dunham A., Scott C.E., Howe K.L., Woodfine K., Spencer C.C.A., RA Jones M.C., Gillson C., Searle S., Zhou Y., Kokocinski F., RA McDonald L., Evans R., Phillips K., Atkinson A., Cooper R., Jones C., RA Hall R.E., Andrews T.D., Lloyd C., Ainscough R., Almeida J.P., RA Ambrose K.D., Anderson F., Andrew R.W., Ashwell R.I.S., Aubin K., RA Babbage A.K., Bagguley C.L., Bailey J., Beasley H., Bethel G., RA Bird C.P., Bray-Allen S., Brown J.Y., Brown A.J., Buckley D., RA Burton J., Bye J., Carder C., Chapman J.C., Clark S.Y., Clarke G., RA Clee C., Cobley V., Collier R.E., Corby N., Coville G.J., Davies J., RA Deadman R., Dunn M., Earthrowl M., Ellington A.G., Errington H., RA Frankish A., Frankland J., French L., Garner P., Garnett J., Gay L., RA Ghori M.R.J., Gibson R., Gilby L.M., Gillett W., Glithero R.J., RA Grafham D.V., Griffiths C., Griffiths-Jones S., Grocock R., RA Hammond S., Harrison E.S.I., Hart E., Haugen E., Heath P.D., RA Holmes S., Holt K., Howden P.J., Hunt A.R., Hunt S.E., Hunter G., RA Isherwood J., James R., Johnson C., Johnson D., Joy A., Kay M., RA Kershaw J.K., Kibukawa M., Kimberley A.M., King A., Knights A.J., RA Lad H., Laird G., Lawlor S., Leongamornlert D.A., Lloyd D.M., RA Loveland J., Lovell J., Lush M.J., Lyne R., Martin S., RA Mashreghi-Mohammadi M., Matthews L., Matthews N.S.W., McLaren S., RA Milne S., Mistry S., Moore M.J.F., Nickerson T., O'Dell C.N., RA Oliver K., Palmeiri A., Palmer S.A., Parker A., Patel D., Pearce A.V., RA Peck A.I., Pelan S., Phelps K., Phillimore B.J., Plumb R., Rajan J., RA Raymond C., Rouse G., Saenphimmachak C., Sehra H.K., Sheridan E., RA Shownkeen R., Sims S., Skuce C.D., Smith M., Steward C., RA Subramanian S., Sycamore N., Tracey A., Tromans A., Van Helmond Z., RA Wall M., Wallis J.M., White S., Whitehead S.L., Wilkinson J.E., RA Willey D.L., Williams H., Wilming L., Wray P.W., Wu Z., Coulson A., RA Vaudin M., Sulston J.E., Durbin R.M., Hubbard T., Wooster R., RA Dunham I., Carter N.P., McVean G., Ross M.T., Harrow J., Olson M.V., RA Beck S., Rogers J., Bentley D.R.; RT "The DNA sequence and biological annotation of human chromosome 1."; RL Nature 441:315-321(2006). RN [6] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 2), AND VARIANT RP ALA-200. RC TISSUE=Chondrosarcoma, and Kidney; RX PubMed=15489334; DOI=10.1101/gr.2596504; RG The MGC Project Team; RT "The status, quality, and expansion of the NIH full-length cDNA RT project: the Mammalian Gene Collection (MGC)."; RL Genome Res. 14:2121-2127(2004). RN [7] RP INDUCTION, FUNCTION, AND MASS SPECTROMETRY. RX PubMed=10542195; DOI=10.1074/jbc.274.45.31759; RA Hoober K.L., Glynn N.M., Burnside J., Coppock D.L., Thorpe C.; RT "Homology between egg white sulfhydryl oxidase and quiescin Q6 defines RT a new class of flavin-linked sulfhydryl oxidases."; RL J. Biol. Chem. 274:31759-31762(1999). RN [8] RP INDUCTION, FUNCTION, SUBCELLULAR LOCATION, AND TISSUE SPECIFICITY. RX PubMed=10708601; DOI=10.1006/bbrc.2000.2324; RA Coppock D.L., Kopman C., Gudas J., Cina-Poppe D.A.; RT "Regulation of the quiescence-induced genes: quiescin Q6, decorin, and RT ribosomal protein S29."; RL Biochem. Biophys. Res. Commun. 269:604-610(2000). RN [9] RP TISSUE SPECIFICITY. RA Turi G.K.; RT "The distribution and specificity of expression of quiescin Q6 (Q6) in RT Human tissues is associated with both endocrine and non-endocrine RT protein secretion."; RL Proc. Annu. Meet. Am. Assoc. Cancer Res. 42:397-397(2001). RN [10] RP FUNCTION, NOMENCLATURE, AND ALTERNATIVE SPLICING. RX PubMed=12176051; DOI=10.1016/S0003-9861(02)00337-5; RA Thorpe C., Hoober K.L., Raje S., Glynn N.M., Burnside J., Turi G.K., RA Coppock D.L.; RT "Sulfhydryl oxidases: emerging catalysts of protein disulfide bond RT formation in eukaryotes."; RL Arch. Biochem. Biophys. 405:1-12(2002). RN [11] RP GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-130, AND MASS RP SPECTROMETRY. RC TISSUE=Plasma; RX PubMed=16335952; DOI=10.1021/pr0502065; RA Liu T., Qian W.-J., Gritsenko M.A., Camp D.G. II, Monroe M.E., RA Moore R.J., Smith R.D.; RT "Human plasma N-glycoproteome analysis by immunoaffinity subtraction, RT hydrazide chemistry, and mass spectrometry."; RL J. Proteome Res. 4:2070-2080(2005). RN [12] RP FUNCTION, AND SUBCELLULAR LOCATION. RX PubMed=17331072; DOI=10.1042/BJ20061510; RA Chakravarthi S., Jessop C.E., Willer M., Stirling C.J., Bulleid N.J.; RT "Intracellular catalysis of disulfide bond formation by the human RT sulfhydryl oxidase, QSOX1."; RL Biochem. J. 404:403-411(2007). RN [13] RP FUNCTION, CATALYTIC ACTIVITY, SUBUNIT, COFACTOR, MUTAGENESIS OF RP CYS-70; CYS-73; CYS-449; CYS-452; CYS-509 AND CYS-512, AND ACTIVE RP SITE. RX PubMed=18393449; DOI=10.1021/bi702522q; RA Heckler E.J., Alon A., Fass D., Thorpe C.; RT "Human quiescin-sulfhydryl oxidase, QSOX1: probing internal redox RT steps by mutagenesis."; RL Biochemistry 47:4955-4963(2008). RN [14] RP GLYCOSYLATION AT ASN-130. RX PubMed=19139490; DOI=10.1074/mcp.M800504-MCP200; RA Jia W., Lu Z., Fu Y., Wang H.P., Wang L.H., Chi H., Yuan Z.F., RA Zheng Z.B., Song L.N., Han H.H., Liang Y.M., Wang J.L., Cai Y., RA Zhang Y.K., Deng Y.L., Ying W.T., He S.M., Qian X.H.; RT "A strategy for precise and large scale identification of core RT fucosylated glycoproteins."; RL Mol. Cell. Proteomics 8:913-923(2009). RN [15] RP X-RAY CRYSTALLOGRAPHY (2.0 ANGSTROMS) OF 286-546 IN COMPLEX WITH FAD, RP SUBUNIT, COFACTOR, AND DISULFIDE BONDS. RX PubMed=20211621; DOI=10.1016/j.febslet.2010.03.001; RA Alon A., Heckler E.J., Thorpe C., Fass D.; RT "QSOX contains a pseudo-dimer of functional and degenerate sulfhydryl RT oxidase domains."; RL FEBS Lett. 584:1521-1525(2010). CC -!- FUNCTION: Catalyzes the oxidation of sulfhydryl groups in peptide CC and protein thiols to disulfides with the reduction of oxygen to CC hydrogen peroxide. May contribute to disulfide bond formation in a CC variety of secreted proteins. In fibroblasts, it may have tumor- CC suppressing capabilities being involved in growth regulation. CC -!- CATALYTIC ACTIVITY: 2 R'C(R)SH + O(2) = R'C(R)S-S(R)CR' + CC H(2)O(2). CC -!- COFACTOR: Binds 1 FAD per subunit. CC -!- SUBUNIT: Monomer. CC -!- SUBCELLULAR LOCATION: Isoform 1: Golgi apparatus membrane; Single- CC pass membrane protein. CC -!- SUBCELLULAR LOCATION: Isoform 2: Secreted, extracellular space. CC Note=Found in the extracellular medium of quiescent cells but is CC not found in proliferating cells. CC -!- ALTERNATIVE PRODUCTS: CC Event=Alternative splicing; Named isoforms=2; CC Name=1; Synonyms=a, QSOX-L; CC IsoId=O00391-1; Sequence=Displayed; CC Name=2; Synonyms=b, QSOX-S; CC IsoId=O00391-2; Sequence=VSP_020489, VSP_020490; CC -!- TISSUE SPECIFICITY: Expressed in heart, placenta, lung, liver, CC skeletal muscle, pancreas and very weakly in brain and kidney. CC -!- INDUCTION: Induced in quiescent cells just as fibroblasts begin to CC leave the proliferative cycle and enter quiescence. CC -!- MISCELLANEOUS: 'Quiescin Q6' means that it was the sixth clone to CC be found at a higher level of expression in quiescent fibroblasts. CC -!- SIMILARITY: Belongs to the quiescin-sulfhydryl oxidase (QSOX) CC family. CC -!- SIMILARITY: Contains 1 ERV/ALR sulfhydryl oxidase domain. CC -!- SIMILARITY: Contains 1 thioredoxin domain. CC -!- SEQUENCE CAUTION: CC Sequence=BAD92517.1; Type=Erroneous initiation; Note=Translation N-terminally shortened; CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; U97276; AAC09010.2; -; mRNA. DR EMBL; AF361868; AAM00263.1; -; mRNA. DR EMBL; AY358941; AAQ89300.1; -; mRNA. DR EMBL; AB209280; BAD92517.1; ALT_INIT; mRNA. DR EMBL; AL390718; CAI14838.1; -; Genomic_DNA. DR EMBL; AL390718; CAI14839.1; -; Genomic_DNA. DR EMBL; BC017692; AAH17692.1; -; mRNA. DR EMBL; BC100023; AAI00024.1; -; mRNA. DR RefSeq; NP_001004128.1; NM_001004128.2. DR RefSeq; NP_002817.2; NM_002826.4. DR UniGene; Hs.744925; -. DR PDB; 3LLI; X-ray; 2.05 A; A=286-546. DR PDB; 3LLK; X-ray; 2.00 A; A/B/C=286-546. DR PDB; 3Q6O; X-ray; 2.05 A; A=33-272. DR PDB; 4IJ3; X-ray; 2.70 A; A=33-272. DR PDBsum; 3LLI; -. DR PDBsum; 3LLK; -. DR PDBsum; 3Q6O; -. DR PDBsum; 4IJ3; -. DR ProteinModelPortal; O00391; -. DR SMR; O00391; 33-544. DR BioGrid; 111734; 4. DR IntAct; O00391; 1. DR MINT; MINT-2862351; -. DR STRING; 9606.ENSP00000356574; -. DR PhosphoSite; O00391; -. DR PaxDb; O00391; -. DR PeptideAtlas; O00391; -. DR PRIDE; O00391; -. DR DNASU; 5768; -. DR Ensembl; ENST00000367600; ENSP00000356572; ENSG00000116260. DR Ensembl; ENST00000367602; ENSP00000356574; ENSG00000116260. DR GeneID; 5768; -. DR KEGG; hsa:5768; -. DR UCSC; uc001gnz.3; human. DR CTD; 5768; -. DR GeneCards; GC01P180123; -. DR HGNC; HGNC:9756; QSOX1. DR HPA; HPA042127; -. DR MIM; 603120; gene. DR neXtProt; NX_O00391; -. DR PharmGKB; PA162400559; -. DR eggNOG; COG0526; -. DR HOGENOM; HOG000231631; -. DR HOVERGEN; HBG080360; -. DR InParanoid; O00391; -. DR KO; K10758; -. DR OMA; SHNRVNA; -. DR OrthoDB; EOG73RB9X; -. DR PhylomeDB; O00391; -. DR TreeFam; TF316749; -. DR BRENDA; 1.8.3.2; 2681. DR ChiTaRS; QSOX1; human. DR EvolutionaryTrace; O00391; -. DR GeneWiki; QSOX1; -. DR GenomeRNAi; 5768; -. DR NextBio; 22434; -. DR PRO; PR:O00391; -. DR ArrayExpress; O00391; -. DR Bgee; O00391; -. DR CleanEx; HS_QSOX1; -. DR Genevestigator; O00391; -. DR GO; GO:0005615; C:extracellular space; IDA:UniProtKB. DR GO; GO:0030173; C:integral component of Golgi membrane; IDA:UniProtKB. DR GO; GO:0016971; F:flavin-linked sulfhydryl oxidase activity; IDA:UniProtKB. DR GO; GO:0003756; F:protein disulfide isomerase activity; IDA:UniProtKB. DR GO; GO:0045454; P:cell redox homeostasis; IEA:InterPro. DR Gene3D; 1.20.120.310; -; 1. DR Gene3D; 3.40.30.10; -; 1. DR InterPro; IPR017905; ERV/ALR_sulphydryl_oxidase. DR InterPro; IPR012336; Thioredoxin-like_fold. DR InterPro; IPR013766; Thioredoxin_domain. DR Pfam; PF04777; Evr1_Alr; 1. DR Pfam; PF00085; Thioredoxin; 1. DR SUPFAM; SSF52833; SSF52833; 1. DR SUPFAM; SSF69000; SSF69000; 1. DR PROSITE; PS51324; ERV_ALR; 1. DR PROSITE; PS51352; THIOREDOXIN_2; 1. PE 1: Evidence at protein level; KW 3D-structure; Alternative splicing; Complete proteome; Disulfide bond; KW FAD; Flavoprotein; Glycoprotein; Golgi apparatus; Membrane; KW Oxidoreductase; Polymorphism; Reference proteome; Secreted; Signal; KW Transmembrane; Transmembrane helix. FT SIGNAL 1 29 Potential. FT CHAIN 30 747 Sulfhydryl oxidase 1. FT /FTId=PRO_0000249533. FT TRANSMEM 710 730 Helical; (Potential). FT DOMAIN 36 156 Thioredoxin. FT DOMAIN 396 503 ERV/ALR sulfhydryl oxidase. FT NP_BIND 478 485 FAD. FT ACT_SITE 70 70 Nucleophile (Probable). FT ACT_SITE 73 73 Nucleophile (Probable). FT BINDING 401 401 FAD. FT BINDING 408 408 FAD. FT BINDING 412 412 FAD. FT BINDING 451 451 FAD. FT BINDING 455 455 FAD. FT BINDING 500 500 FAD. FT BINDING 503 503 FAD. FT CARBOHYD 130 130 N-linked (GlcNAc...) (complex). FT CARBOHYD 243 243 N-linked (GlcNAc...) (Potential). FT CARBOHYD 575 575 N-linked (GlcNAc...) (Potential). FT DISULFID 70 73 Redox-active (Probable). FT DISULFID 393 405 FT DISULFID 449 452 FT DISULFID 509 512 FT VAR_SEQ 603 604 AS -> LI (in isoform 2). FT /FTId=VSP_020489. FT VAR_SEQ 605 747 Missing (in isoform 2). FT /FTId=VSP_020490. FT VARIANT 114 114 N -> S (in dbSNP:rs3894211). FT /FTId=VAR_027429. FT VARIANT 200 200 G -> A (in dbSNP:rs17855475). FT /FTId=VAR_027430. FT VARIANT 256 256 R -> M (in dbSNP:rs4360492). FT /FTId=VAR_027431. FT VARIANT 294 294 A -> S (in dbSNP:rs2278943). FT /FTId=VAR_027432. FT VARIANT 444 444 H -> R (in dbSNP:rs12371). FT /FTId=VAR_027433. FT VARIANT 591 591 N -> H (in dbSNP:rs3738115). FT /FTId=VAR_027434. FT VARIANT 605 605 R -> P (in dbSNP:rs16855466). FT /FTId=VAR_053652. FT MUTAGEN 70 70 C->S: Reduces activity by 93%. FT MUTAGEN 73 73 C->S: Reduces activity by 93%. FT MUTAGEN 449 449 C->S: Reduces activity by 96%. FT MUTAGEN 452 452 C->S: Loss of activity. FT MUTAGEN 509 509 C->S: No effect. Reduces activity by 70%; FT when associated with S-512. FT MUTAGEN 512 512 C->S: Reduces activity by 40%. Reduces FT activity by 70%; when associated with S- FT 509. FT STRAND 40 45 FT TURN 47 49 FT HELIX 50 54 FT STRAND 58 66 FT HELIX 71 86 FT HELIX 88 90 FT TURN 91 93 FT STRAND 94 100 FT TURN 104 106 FT HELIX 107 112 FT STRAND 117 124 FT STRAND 130 132 FT STRAND 134 136 FT HELIX 143 155 FT HELIX 173 177 FT HELIX 179 182 FT STRAND 186 193 FT HELIX 199 206 FT TURN 207 209 FT STRAND 213 219 FT HELIX 223 229 FT STRAND 234 241 FT STRAND 246 248 FT STRAND 252 255 FT HELIX 256 264 FT STRAND 298 300 FT HELIX 301 313 FT HELIX 316 318 FT STRAND 320 323 FT HELIX 324 340 FT HELIX 345 360 FT STRAND 363 367 FT HELIX 368 377 FT HELIX 380 383 FT STRAND 400 402 FT HELIX 403 419 FT HELIX 426 431 FT HELIX 432 434 FT HELIX 435 446 FT HELIX 450 463 FT HELIX 464 466 FT HELIX 470 488 FT STRAND 502 504 FT TURN 506 508 FT HELIX 510 512 FT STRAND 517 519 FT HELIX 524 534 FT HELIX 537 539 SQ SEQUENCE 747 AA; 82578 MW; 52639D09A50E00C5 CRC64; MRRCNSGSGP PPSLLLLLLW LLAVPGANAA PRSALYSPSD PLTLLQADTV RGAVLGSRSA WAVEFFASWC GHCIAFAPTW KALAEDVKAW RPALYLAALD CAEETNSAVC RDFNIPGFPT VRFFKAFTKN GSGAVFPVAG ADVQTLRERL IDALESHHDT WPPACPPLEP AKLEEIDGFF ARNNEEYLAL IFEKGGSYLG REVALDLSQH KGVAVRRVLN TEANVVRKFG VTDFPSCYLL FRNGSVSRVP VLMESRSFYT AYLQRLSGLT REAAQTTVAP TTANKIAPTV WKLADRSKIY MADLESALHY ILRIEVGRFP VLEGQRLVAL KKFVAVLAKY FPGRPLVQNF LHSVNEWLKR QKRNKIPYSF FKTALDDRKE GAVLAKKVNW IGCQGSEPHF RGFPCSLWVL FHFLTVQAAR QNVDHSQEAA KAKEVLPAIR GYVHYFFGCR DCASHFEQMA AASMHRVGSP NAAVLWLWSS HNRVNARLAG APSEDPQFPK VQWPPRELCS ACHNERLDVP VWDVEATLNF LKAHFSPSNI ILDFPAAGSA ARRDVQNVAA APELAMGALE LESRNSTLDP GKPEMMKSPT NTTPHVPAEG PEASRPPKLH PGLRAAPGQE PPEHMAELQR NEQEQPLGQW HLSKRDTGAA LLAESRAEKN RLWGPLEVRR VGRSSKQLVD IPEGQLEARA GRGRGQWLQV LGGGFSYLDI SLCVGLYSLS FMGLLAMYTY FQAKIRALKG HAGHPAA //