VSP1_DEIAC
ID VSP1_DEIAC Reviewed; 260 AA.
AC Q9I8X2;
DT 04-MAY-2001, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2000, sequence version 1.
DT 03-AUG-2022, entry version 89.
DE RecName: Full=Thrombin-like enzyme acutobin;
DE Short=SVTLE;
DE EC=3.4.21.-;
DE AltName: Full=Fibrinogen-clotting enzyme;
DE AltName: Full=Snake venom serine protease;
DE Short=SVSP;
DE Flags: Precursor;
OS Deinagkistrodon acutus (Hundred-pace snake) (Agkistrodon acutus).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera;
OC Serpentes; Colubroidea; Viperidae; Crotalinae; Deinagkistrodon.
OX NCBI_TaxID=36307;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA], PARTIAL PROTEIN SEQUENCE, FUNCTION, AND
RP SUBUNIT.
RC TISSUE=Venom gland;
RX PubMed=11171091; DOI=10.1042/0264-6021:3540161;
RA Wang Y.-M., Wang S.-R., Tsai I.-H.;
RT "Serine protease isoforms of Deinagkistrodon acutus venom: cloning,
RT sequencing and phylogenetic analysis.";
RL Biochem. J. 354:161-168(2001).
CC -!- FUNCTION: Thrombin-like snake venom serine protease that coagulates
CC human fibrinogen by hydrolysis of the alpha chains (FGA).
CC {ECO:0000269|PubMed:11171091}.
CC -!- SUBUNIT: Monomer. {ECO:0000269|PubMed:11171091}.
CC -!- SUBCELLULAR LOCATION: Secreted.
CC -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC -!- PTM: N-glycosylated.
CC -!- MISCELLANEOUS: Does not hydrolyzes the beta chains of fibrinogen (FGB).
CC {ECO:0000305|PubMed:11171091}.
CC -!- SIMILARITY: Belongs to the peptidase S1 family. Snake venom subfamily.
CC {ECO:0000255|PROSITE-ProRule:PRU00274}.
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DR EMBL; AF159057; AAF76377.1; -; mRNA.
DR AlphaFoldDB; Q9I8X2; -.
DR SMR; Q9I8X2; -.
DR MEROPS; S01.235; -.
DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR GO; GO:0004252; F:serine-type endopeptidase activity; IEA:InterPro.
DR GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR GO; GO:0006508; P:proteolysis; IEA:UniProtKB-KW.
DR CDD; cd00190; Tryp_SPc; 1.
DR Gene3D; 2.40.10.10; -; 2.
DR InterPro; IPR009003; Peptidase_S1_PA.
DR InterPro; IPR043504; Peptidase_S1_PA_chymotrypsin.
DR InterPro; IPR001314; Peptidase_S1A.
DR InterPro; IPR001254; Trypsin_dom.
DR InterPro; IPR018114; TRYPSIN_HIS.
DR Pfam; PF00089; Trypsin; 1.
DR PRINTS; PR00722; CHYMOTRYPSIN.
DR SMART; SM00020; Tryp_SPc; 1.
DR SUPFAM; SSF50494; SSF50494; 1.
DR PROSITE; PS50240; TRYPSIN_DOM; 1.
DR PROSITE; PS00134; TRYPSIN_HIS; 1.
PE 1: Evidence at protein level;
KW Blood coagulation cascade activating toxin; Direct protein sequencing;
KW Disulfide bond; Glycoprotein; Hemostasis impairing toxin; Hydrolase;
KW Protease; Secreted; Serine protease; Signal; Toxin; Zymogen.
FT SIGNAL 1..18
FT /evidence="ECO:0000250"
FT PROPEP 19..24
FT /id="PRO_0000028361"
FT CHAIN 25..260
FT /note="Thrombin-like enzyme acutobin"
FT /id="PRO_0000028362"
FT DOMAIN 25..251
FT /note="Peptidase S1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00274"
FT ACT_SITE 67
FT /note="Charge relay system"
FT /evidence="ECO:0000250"
FT ACT_SITE 112
FT /note="Charge relay system"
FT /evidence="ECO:0000250"
FT ACT_SITE 206
FT /note="Charge relay system"
FT /evidence="ECO:0000250"
FT CARBOHYD 101
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT CARBOHYD 105
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT CARBOHYD 124
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT CARBOHYD 253
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000255"
FT DISULFID 31..165
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00274"
FT DISULFID 52..68
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00274"
FT DISULFID 102..258
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00274"
FT DISULFID 144..212
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00274"
FT DISULFID 176..191
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00274"
FT DISULFID 202..227
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00274"
SQ SEQUENCE 260 AA; 28815 MW; 15818FC47EB20918 CRC64;
MVLIRVLANL LILQLSYAQK SSELVIGGVE CDINEHRFLV ALYELTSMTF LCGGTLINQE
WVVTAAHCDR LQLYLYIGMH DKYVKFDDEQ GREPIEKYFY NCSNNLTTRD KDIMLIRLDR
PVDNSTHIAP LSLPSRPPSV GSVCRVMGWG AISPSRDVLP DVPHCVNINL VNNAECRRAY
PRLPATSRTL CAGVMQGGID SCNRDSGGPL ICDGQFQGVV NWGGNPCAQP NMPALYTKVY
DYNDWIRSIT AGNTTAACPP
