ID   VM2_GLOBL               Reviewed;          71 AA.
AC   P21858;
DT   01-MAY-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1991, sequence version 1.
DT   25-MAY-2022, entry version 82.
DE   RecName: Full=Disintegrin halysin;
DE   AltName: Full=Platelet aggregation activation inhibitor;
OS   Gloydius blomhoffii (Mamushi) (Agkistrodon halys blomhoffi).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera;
OC   Serpentes; Colubroidea; Viperidae; Crotalinae; Gloydius.
OX   NCBI_TaxID=242054;
RN   [1]
RP   PROTEIN SEQUENCE, FUNCTION, AND SUBUNIT.
RC   TISSUE=Venom;
RX   PubMed=1888330; DOI=10.1016/0006-2952(91)90256-5;
RA   Huang T.-F., Liu C.-S., Ouyang C.H., Teng C.-M.;
RT   "Halysin, an antiplatelet Arg-Gly-Asp-containing snake venom peptide, as
RT   fibrinogen receptor antagonist.";
RL   Biochem. Pharmacol. 42:1209-1219(1991).
CC   -!- FUNCTION: Inhibits fibrinogen interaction with platelets. Acts by
CC       binding to alpha-IIb/beta-3 (ITGA2B/ITGB3) on the platelet surface and
CC       inhibits aggregation induced by ADP, thrombin, platelet-activating
CC       factor and collagen. {ECO:0000269|PubMed:1888330}.
CC   -!- SUBUNIT: Monomer. {ECO:0000269|PubMed:1888330}.
CC   -!- SUBCELLULAR LOCATION: Secreted.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC   -!- MISCELLANEOUS: The disintegrins belong to the medium disintegrin
CC       subfamily.
CC   -!- SIMILARITY: Belongs to the venom metalloproteinase (M12B) family. P-II
CC       subfamily. P-IIa sub-subfamily. {ECO:0000305}.
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DR   AlphaFoldDB; P21858; -.
DR   SMR; P21858; -.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR   Gene3D; 4.10.70.10; -; 1.
DR   InterPro; IPR018358; Disintegrin_CS.
DR   InterPro; IPR001762; Disintegrin_dom.
DR   InterPro; IPR036436; Disintegrin_dom_sf.
DR   Pfam; PF00200; Disintegrin; 1.
DR   PRINTS; PR00289; DISINTEGRIN.
DR   SMART; SM00050; DISIN; 1.
DR   SUPFAM; SSF57552; SSF57552; 1.
DR   PROSITE; PS00427; DISINTEGRIN_1; 1.
DR   PROSITE; PS50214; DISINTEGRIN_2; 1.
PE   1: Evidence at protein level;
KW   Cell adhesion impairing toxin; Direct protein sequencing; Disulfide bond;
KW   Hemostasis impairing toxin; Platelet aggregation inhibiting toxin;
KW   Secreted; Toxin.
FT   CHAIN           1..71
FT                   /note="Disintegrin halysin"
FT                   /id="PRO_0000101782"
FT   DOMAIN          1..71
FT                   /note="Disintegrin"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00068"
FT   MOTIF           51..53
FT                   /note="Cell attachment site"
FT   DISULFID        6..15
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00068"
FT   DISULFID        8..16
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00068"
FT   DISULFID        21..35
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00068"
FT   DISULFID        29..59
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00068"
FT   DISULFID        34..38
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00068"
FT   DISULFID        47..66
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00068"
SQ   SEQUENCE   71 AA;  7517 MW;  E2B134B927155592 CRC64;
     EAGEECDCGS PGNPCCDAAT CKLRQGAQCA EGLCCDQCRF MKKGTVCRIA RGDDMDDYCN
     GISAGCPRNP F