ID SPIT1_HUMAN Reviewed; 529 AA. AC O43278; Q7Z7D2; DT 21-FEB-2001, integrated into UniProtKB/Swiss-Prot. DT 15-MAR-2005, sequence version 2. DT 02-DEC-2020, entry version 195. DE RecName: Full=Kunitz-type protease inhibitor 1; DE AltName: Full=Hepatocyte growth factor activator inhibitor type 1; DE Short=HAI-1; DE Flags: Precursor; GN Name=SPINT1; Synonyms=HAI1; ORFNames=UNQ223/PRO256; OS Homo sapiens (Human). OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; OC Homo. OX NCBI_TaxID=9606; RN [1] RP NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2). RX PubMed=9045658; DOI=10.1074/jbc.272.10.6370; RA Shimomura T., Denda K., Kitamura A., Kawaguchi T., Kito M., Kondo J., RA Kagaya S., Qin L., Takata H., Miyazawa K., Kitamura N.; RT "Hepatocyte growth factor activator inhibitor, a novel Kunitz-type serine RT protease inhibitor."; RL J. Biol. Chem. 272:6370-6376(1997). RN [2] RP NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). RA Kirchhofer D., Peek M., Li W., Stamos J., Eigenbrot C., Kadkhodayan S., RA Eliott J.M., Corpuz R.T., Lazarus R.A., Moran P.; RT "Tissue-expression, protease-specificity and Kunitz domain functions of RT HAI-1B, a new splice variant of hepatocyte growth factor activator RT inhibitor-1."; RL Submitted (JUN-2003) to the EMBL/GenBank/DDBJ databases. 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., Huang A., RA Kim H.S., Klimowski L., Jin Y., Johnson S., Lee J., Lewis L., Liao D., RA Mark M.R., Robbie E., Sanchez C., Schoenfeld J., Seshagiri S., Simmons L., RA Singh J., Smith V., Stinson J., Vagts A., Vandlen R.L., Watanabe C., RA Wieand D., Woods K., Xie M.-H., Yansura D.G., Yi S., Yu G., Yuan J., RA Zhang M., Zhang Z., Goddard A.D., Wood W.I., Godowski P.J., Gray A.M.; RT "The secreted protein discovery initiative (SPDI), a large-scale effort to RT identify novel human secreted and transmembrane proteins: a bioinformatics RT assessment."; RL Genome Res. 13:2265-2270(2003). RN [4] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). RA Kalnine N., Chen X., Rolfs A., Halleck A., Hines L., Eisenstein S., RA Koundinya M., Raphael J., Moreira D., Kelley T., LaBaer J., Lin Y., RA Phelan M., Farmer A.; RT "Cloning of human full-length CDSs in BD Creator(TM) system donor vector."; RL Submitted (MAY-2003) to the EMBL/GenBank/DDBJ databases. RN [5] RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2). RC TISSUE=Colon, and Placenta; 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 project: RT the Mammalian Gene Collection (MGC)."; RL Genome Res. 14:2121-2127(2004). RN [6] RP PARTIAL PROTEIN SEQUENCE, AND CHARACTERIZATION. RC TISSUE=Milk; RX PubMed=10373425; DOI=10.1074/jbc.274.26.18237; RA Lin C.Y., Anders J., Johnson M., Dickson R.B.; RT "Purification and characterization of a complex containing matriptase and a RT Kunitz-type serine protease inhibitor from human milk."; RL J. Biol. Chem. 274:18237-18242(1999). RN [7] RP PROTEIN SEQUENCE OF 36-50. RX PubMed=15340161; DOI=10.1110/ps.04682504; RA Zhang Z., Henzel W.J.; RT "Signal peptide prediction based on analysis of experimentally verified RT cleavage sites."; RL Protein Sci. 13:2819-2824(2004). RN [8] RP IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. RC TISSUE=Cervix carcinoma; RX PubMed=18669648; DOI=10.1073/pnas.0805139105; RA Dephoure N., Zhou C., Villen J., Beausoleil S.A., Bakalarski C.E., RA Elledge S.J., Gygi S.P.; RT "A quantitative atlas of mitotic phosphorylation."; RL Proc. Natl. Acad. Sci. U.S.A. 105:10762-10767(2008). RN [9] RP X-RAY CRYSTALLOGRAPHY (2.6 ANGSTROMS) OF 245-303 IN COMPLEX WITH HGFAC, AND RP DISULFIDE BONDS. RX PubMed=15713485; DOI=10.1016/j.jmb.2004.12.048; RA Shia S., Stamos J., Kirchhofer D., Fan B., Wu J., Corpuz R.T., Santell L., RA Lazarus R.A., Eigenbrot C.; RT "Conformational lability in serine protease active sites: structures of RT hepatocyte growth factor activator (HGFA) alone and with the inhibitory RT domain from HGFA inhibitor-1B."; RL J. Mol. Biol. 346:1335-1349(2005). CC -!- FUNCTION: Inhibitor of HGF activator. Also acts as an inhibitor of CC matriptase (ST14). CC -!- SUBUNIT: Interacts with HGFAC. {ECO:0000269|PubMed:15713485}. CC -!- INTERACTION: CC O43278-2; Q08AM2: ADAM33; NbExp=3; IntAct=EBI-12078338, EBI-10225815; CC O43278-2; Q8TD06: AGR3; NbExp=3; IntAct=EBI-12078338, EBI-3925742; CC O43278-2; O75508: CLDN11; NbExp=3; IntAct=EBI-12078338, EBI-12820543; CC O43278-2; Q9BXN2-6: CLEC7A; NbExp=3; IntAct=EBI-12078338, EBI-11989440; CC O43278-2; Q92520: FAM3C; NbExp=3; IntAct=EBI-12078338, EBI-2876774; CC O43278-2; P21145: MAL; NbExp=3; IntAct=EBI-12078338, EBI-3932027; CC O43278-2; Q9NVC3: SLC38A7; NbExp=3; IntAct=EBI-12078338, EBI-10314552; CC O43278-2; Q9NRQ5: SMCO4; NbExp=3; IntAct=EBI-12078338, EBI-8640191; CC O43278-2; P02787: TF; NbExp=3; IntAct=EBI-12078338, EBI-714319; CC O43278-2; Q9BVC6: TMEM109; NbExp=3; IntAct=EBI-12078338, EBI-1057733; CC O43278-2; Q8WZ59: TMEM190; NbExp=3; IntAct=EBI-12078338, EBI-10278423; CC O43278-2; Q5BJF2: TMEM97; NbExp=3; IntAct=EBI-12078338, EBI-12111910; CC O43278-2; Q86UF1: TSPAN33; NbExp=3; IntAct=EBI-12078338, EBI-12045841; CC O43278-2; Q9UHD9: UBQLN2; NbExp=3; IntAct=EBI-12078338, EBI-947187; CC O43278-2; O75841: UPK1B; NbExp=3; IntAct=EBI-12078338, EBI-12237619; CC O43278-2; O95183: VAMP5; NbExp=3; IntAct=EBI-12078338, EBI-10191195; CC -!- SUBCELLULAR LOCATION: Secreted. CC -!- ALTERNATIVE PRODUCTS: CC Event=Alternative splicing; Named isoforms=2; CC Name=1; Synonyms=HAI-1B; CC IsoId=O43278-1; Sequence=Displayed; CC Name=2; Synonyms=HAI-1A; CC IsoId=O43278-2; Sequence=VSP_013019; CC -!- DOMAIN: This inhibitor contains two inhibitory domains. CC -!- WEB RESOURCE: Name=Atlas of Genetics and Cytogenetics in Oncology and CC Haematology; CC URL="http://atlasgeneticsoncology.org/Genes/SPINT1ID44384ch15q15.html"; 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; AB000095; BAA25014.1; -; mRNA. DR EMBL; AY296715; AAP44001.1; -; mRNA. DR EMBL; AY358969; AAQ89328.1; -; mRNA. DR EMBL; BT007425; AAP36093.1; -; mRNA. DR EMBL; BC004140; AAH04140.1; -; mRNA. DR EMBL; BC018702; AAH18702.1; -; mRNA. DR CCDS; CCDS10067.1; -. [O43278-1] DR CCDS; CCDS45231.1; -. [O43278-2] DR RefSeq; NP_001027539.1; NM_001032367.1. [O43278-2] DR RefSeq; NP_003701.1; NM_003710.3. [O43278-2] DR RefSeq; NP_857593.1; NM_181642.2. [O43278-1] DR RefSeq; XP_006720720.1; XM_006720657.1. [O43278-1] DR PDB; 1YC0; X-ray; 2.60 A; I=245-303. DR PDB; 2MSX; NMR; -; A=47-152. DR PDB; 4ISL; X-ray; 2.29 A; B=245-304. DR PDB; 4ISN; X-ray; 2.45 A; B=245-307. DR PDB; 4ISO; X-ray; 2.01 A; B=245-304. DR PDB; 5EZD; X-ray; 2.10 A; A/B=168-303. DR PDB; 5H7V; X-ray; 3.82 A; A=36-457. DR PDBsum; 1YC0; -. DR PDBsum; 2MSX; -. DR PDBsum; 4ISL; -. DR PDBsum; 4ISN; -. DR PDBsum; 4ISO; -. DR PDBsum; 5EZD; -. DR PDBsum; 5H7V; -. DR BMRB; O43278; -. DR SMR; O43278; -. DR BioGRID; 112570; 25. DR DIP; DIP-37949N; -. DR IntAct; O43278; 23. DR MINT; O43278; -. DR STRING; 9606.ENSP00000342098; -. DR MEROPS; I02.007; -. DR GlyGen; O43278; 6 sites, 1 O-linked glycan (3 sites). DR iPTMnet; O43278; -. DR PhosphoSitePlus; O43278; -. DR SwissPalm; O43278; -. DR BioMuta; SPINT1; -. DR EPD; O43278; -. DR jPOST; O43278; -. DR MassIVE; O43278; -. DR MaxQB; O43278; -. DR PaxDb; O43278; -. DR PeptideAtlas; O43278; -. DR PRIDE; O43278; -. DR ProteomicsDB; 48846; -. [O43278-1] DR ProteomicsDB; 48847; -. [O43278-2] DR Antibodypedia; 1540; 410 antibodies. DR DNASU; 6692; -. DR Ensembl; ENST00000344051; ENSP00000342098; ENSG00000166145. [O43278-1] DR Ensembl; ENST00000562057; ENSP00000457076; ENSG00000166145. [O43278-2] DR GeneID; 6692; -. DR KEGG; hsa:6692; -. DR UCSC; uc001zna.4; human. [O43278-1] DR CTD; 6692; -. DR DisGeNET; 6692; -. DR EuPathDB; HostDB:ENSG00000166145.14; -. DR GeneCards; SPINT1; -. DR HGNC; HGNC:11246; SPINT1. DR HPA; ENSG00000166145; Tissue enhanced (intestine). DR MIM; 605123; gene. DR neXtProt; NX_O43278; -. DR OpenTargets; ENSG00000166145; -. DR PharmGKB; PA36076; -. DR eggNOG; KOG4295; Eukaryota. DR GeneTree; ENSGT00940000161683; -. DR InParanoid; O43278; -. DR OMA; QRKGFHR; -. DR OrthoDB; 687721at2759; -. DR PhylomeDB; O43278; -. DR TreeFam; TF325867; -. DR PathwayCommons; O43278; -. DR Reactome; R-HSA-6806942; MET Receptor Activation. DR Reactome; R-HSA-8852405; Signaling by MST1. DR BioGRID-ORCS; 6692; 18 hits in 843 CRISPR screens. DR ChiTaRS; SPINT1; human. DR EvolutionaryTrace; O43278; -. DR GeneWiki; SPINT1; -. DR GenomeRNAi; 6692; -. DR Pharos; O43278; Tbio. DR PRO; PR:O43278; -. DR Proteomes; UP000005640; Chromosome 15. DR RNAct; O43278; protein. DR Bgee; ENSG00000166145; Expressed in lower esophagus mucosa and 186 other tissues. DR ExpressionAtlas; O43278; baseline and differential. DR Genevisible; O43278; HS. DR GO; GO:0070062; C:extracellular exosome; HDA:UniProtKB. DR GO; GO:0005576; C:extracellular region; TAS:ProtInc. DR GO; GO:0005615; C:extracellular space; HDA:UniProtKB. DR GO; GO:0016020; C:membrane; TAS:ProtInc. DR GO; GO:0005886; C:plasma membrane; IEA:Ensembl. DR GO; GO:0004867; F:serine-type endopeptidase inhibitor activity; TAS:ProtInc. DR GO; GO:0060670; P:branching involved in labyrinthine layer morphogenesis; IEA:Ensembl. DR GO; GO:0071773; P:cellular response to BMP stimulus; IEA:Ensembl. DR GO; GO:0030198; P:extracellular matrix organization; IEA:Ensembl. DR GO; GO:2000178; P:negative regulation of neural precursor cell proliferation; IEA:Ensembl. DR GO; GO:0001843; P:neural tube closure; IEA:Ensembl. DR GO; GO:0060674; P:placenta blood vessel development; IEA:Ensembl. DR GO; GO:0045687; P:positive regulation of glial cell differentiation; IEA:Ensembl. DR CDD; cd00109; KU; 2. DR CDD; cd00112; LDLa; 1. DR Gene3D; 2.60.40.10; -; 1. DR Gene3D; 4.10.400.10; -; 1. DR Gene3D; 4.10.410.10; -; 2. DR InterPro; IPR013783; Ig-like_fold. DR InterPro; IPR002223; Kunitz_BPTI. DR InterPro; IPR036880; Kunitz_BPTI_sf. DR InterPro; IPR036055; LDL_receptor-like_sf. DR InterPro; IPR023415; LDLR_class-A_CS. DR InterPro; IPR002172; LDrepeatLR_classA_rpt. DR InterPro; IPR013980; MANSC_dom. DR InterPro; IPR011106; MANSC_N. DR InterPro; IPR020901; Prtase_inh_Kunz-CS. DR InterPro; IPR042482; Spint1. DR PANTHER; PTHR46750; PTHR46750; 1. DR Pfam; PF00014; Kunitz_BPTI; 2. DR Pfam; PF00057; Ldl_recept_a; 1. DR Pfam; PF07502; MANEC; 1. DR PRINTS; PR00759; BASICPTASE. DR SMART; SM00131; KU; 2. DR SMART; SM00192; LDLa; 1. DR SMART; SM00765; MANEC; 1. DR SUPFAM; SSF57362; SSF57362; 2. DR SUPFAM; SSF57424; SSF57424; 1. DR PROSITE; PS00280; BPTI_KUNITZ_1; 2. DR PROSITE; PS50279; BPTI_KUNITZ_2; 2. DR PROSITE; PS01209; LDLRA_1; 1. DR PROSITE; PS50068; LDLRA_2; 1. DR PROSITE; PS50986; MANSC; 1. PE 1: Evidence at protein level; KW 3D-structure; Alternative splicing; Direct protein sequencing; KW Disulfide bond; Glycoprotein; Polymorphism; Protease inhibitor; KW Reference proteome; Repeat; Secreted; Serine protease inhibitor; Signal. FT SIGNAL 1..35 FT /evidence="ECO:0000269|PubMed:15340161" FT CHAIN 36..529 FT /note="Kunitz-type protease inhibitor 1" FT /id="PRO_0000016883" FT DOMAIN 57..140 FT /note="MANSC" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00341" FT DOMAIN 250..300 FT /note="BPTI/Kunitz inhibitor 1" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00031" FT DOMAIN 334..370 FT /note="LDL-receptor class A" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00124" FT DOMAIN 391..441 FT /note="BPTI/Kunitz inhibitor 2" FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00031" FT SITE 260..261 FT /note="Reactive bond" FT /evidence="ECO:0000250" FT SITE 401..402 FT /note="Reactive bond" FT /evidence="ECO:0000250" FT CARBOHYD 66 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT CARBOHYD 235 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT CARBOHYD 523 FT /note="N-linked (GlcNAc...) asparagine" FT /evidence="ECO:0000255" FT DISULFID 250..300 FT /evidence="ECO:0000269|PubMed:15713485" FT DISULFID 259..283 FT /evidence="ECO:0000269|PubMed:15713485" FT DISULFID 275..296 FT /evidence="ECO:0000269|PubMed:15713485" FT DISULFID 335..347 FT /evidence="ECO:0000250" FT DISULFID 342..360 FT /evidence="ECO:0000250" FT DISULFID 354..369 FT /evidence="ECO:0000250" FT DISULFID 391..441 FT /evidence="ECO:0000250" FT DISULFID 400..424 FT /evidence="ECO:0000250" FT DISULFID 416..437 FT /evidence="ECO:0000250" FT VAR_SEQ 306..321 FT /note="Missing (in isoform 2)" FT /evidence="ECO:0000303|PubMed:15489334, FT ECO:0000303|PubMed:9045658" FT /id="VSP_013019" FT VARIANT 123 FT /note="Y -> C (in dbSNP:rs11549915)" FT /id="VAR_050065" FT VARIANT 142 FT /note="T -> R (in dbSNP:rs12323939)" FT /id="VAR_050066" FT VARIANT 337 FT /note="P -> L (in dbSNP:rs7165897)" FT /id="VAR_050067" FT CONFLICT 469 FT /note="A -> T (in Ref. 2 and 3)" FT /evidence="ECO:0000305" FT HELIX 50..53 FT /evidence="ECO:0000244|PDB:2MSX" FT STRAND 54..56 FT /evidence="ECO:0000244|PDB:2MSX" FT STRAND 61..63 FT /evidence="ECO:0000244|PDB:2MSX" FT HELIX 66..69 FT /evidence="ECO:0000244|PDB:2MSX" FT TURN 70..72 FT /evidence="ECO:0000244|PDB:2MSX" FT STRAND 75..77 FT /evidence="ECO:0000244|PDB:2MSX" FT HELIX 84..93 FT /evidence="ECO:0000244|PDB:2MSX" FT STRAND 99..104 FT /evidence="ECO:0000244|PDB:2MSX" FT STRAND 106..108 FT /evidence="ECO:0000244|PDB:2MSX" FT STRAND 113..119 FT /evidence="ECO:0000244|PDB:2MSX" FT STRAND 131..133 FT /evidence="ECO:0000244|PDB:2MSX" FT STRAND 135..142 FT /evidence="ECO:0000244|PDB:2MSX" FT TURN 143..145 FT /evidence="ECO:0000244|PDB:2MSX" FT HELIX 146..149 FT /evidence="ECO:0000244|PDB:2MSX" FT TURN 150..152 FT /evidence="ECO:0000244|PDB:2MSX" FT STRAND 169..173 FT /evidence="ECO:0000244|PDB:5EZD" FT STRAND 177..180 FT /evidence="ECO:0000244|PDB:5EZD" FT STRAND 190..196 FT /evidence="ECO:0000244|PDB:5EZD" FT STRAND 199..201 FT /evidence="ECO:0000244|PDB:5EZD" FT STRAND 209..212 FT /evidence="ECO:0000244|PDB:5EZD" FT STRAND 215..222 FT /evidence="ECO:0000244|PDB:5EZD" FT STRAND 234..240 FT /evidence="ECO:0000244|PDB:5EZD" FT HELIX 246..250 FT /evidence="ECO:0000244|PDB:4ISO" FT STRAND 263..268 FT /evidence="ECO:0000244|PDB:4ISO" FT TURN 270..272 FT /evidence="ECO:0000244|PDB:4ISO" FT STRAND 273..280 FT /evidence="ECO:0000244|PDB:4ISO" FT STRAND 282..284 FT /evidence="ECO:0000244|PDB:4ISO" FT STRAND 290..292 FT /evidence="ECO:0000244|PDB:4ISO" FT HELIX 293..300 FT /evidence="ECO:0000244|PDB:4ISO" SQ SEQUENCE 529 AA; 58398 MW; A87F286C23C73422 CRC64; MAPARTMARA RLAPAGIPAV ALWLLCTLGL QGTQAGPPPA PPGLPAGADC LNSFTAGVPG FVLDTNASVS NGATFLESPT VRRGWDCVRA CCTTQNCNLA LVELQPDRGE DAIAACFLIN CLYEQNFVCK FAPREGFINY LTREVYRSYR QLRTQGFGGS GIPKAWAGID LKVQPQEPLV LKDVENTDWR LLRGDTDVRV ERKDPNQVEL WGLKEGTYLF QLTVTSSDHP EDTANVTVTV LSTKQTEDYC LASNKVGRCR GSFPRWYYDP TEQICKSFVY GGCLGNKNNY LREEECILAC RGVQGGPLRG SSGAQATFPQ GPSMERRHPV CSGTCQPTQF RCSNGCCIDS FLECDDTPNC PDASDEAACE KYTSGFDELQ RIHFPSDKGH CVDLPDTGLC KESIPRWYYN PFSEHCARFT YGGCYGNKNN FEEEQQCLES CRGISKKDVF GLRREIPIPS TGSVEMAVAV FLVICIVVVV AILGYCFFKN QRKDFHGHHH HPPPTPASST VSTTEDTEHL VYNHTTRPL //