ID   CRVP2_HYDHA             Reviewed;         238 AA.
AC   Q8UW11;
DT   29-MAR-2004, integrated into UniProtKB/Swiss-Prot.
DT   29-MAR-2004, sequence version 2.
DT   25-MAY-2022, entry version 77.
DE   RecName: Full=Cysteine-rich venom protein 2;
DE            Short=CRVP;
DE   Flags: Precursor;
OS   Hydrophis hardwickii (Hardwick's spine-bellied seasnake) (Lapemis
OS   hardwickii).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera;
OC   Serpentes; Colubroidea; Hydrophiidae; Hydrophis.
OX   NCBI_TaxID=8781;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Venom gland;
RA   Wei J., Zhong X., Yang W., Zhao G., Xu A.;
RT   "A novel cysteine-rich venom protein cDNA from sea snake.";
RL   Submitted (SEP-1999) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Blocks contraction of smooth muscle elicited by high
CC       potassium-induced depolarization, but does not block caffeine-
CC       stimulated contraction. May target voltage-gated calcium channels (Cav)
CC       on smooth muscle (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Secreted.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC   -!- SIMILARITY: Belongs to the CRISP family. {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAL54918.1; Type=Erroneous initiation; Note=Truncated N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; AF190861; AAL54918.1; ALT_INIT; mRNA.
DR   AlphaFoldDB; Q8UW11; -.
DR   SMR; Q8UW11; -.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0005246; F:calcium channel regulator activity; IEA:UniProtKB-KW.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR   CDD; cd05383; CAP_CRISP; 1.
DR   Gene3D; 1.10.10.740; -; 1.
DR   Gene3D; 3.40.33.10; -; 1.
DR   InterPro; IPR018244; Allrgn_V5/Tpx1_CS.
DR   InterPro; IPR014044; CAP_domain.
DR   InterPro; IPR035940; CAP_sf.
DR   InterPro; IPR042076; Crisp-like_dom.
DR   InterPro; IPR001283; CRISP-related.
DR   InterPro; IPR013871; Cysteine_rich_secretory.
DR   InterPro; IPR034117; SCP_CRISP.
DR   InterPro; IPR003582; ShKT_dom.
DR   PANTHER; PTHR10334; PTHR10334; 1.
DR   Pfam; PF00188; CAP; 1.
DR   Pfam; PF08562; Crisp; 1.
DR   PRINTS; PR00837; V5TPXLIKE.
DR   SMART; SM00198; SCP; 1.
DR   SUPFAM; SSF55797; SSF55797; 1.
DR   PROSITE; PS01009; CRISP_1; 1.
DR   PROSITE; PS01010; CRISP_2; 1.
DR   PROSITE; PS51670; SHKT; 1.
PE   2: Evidence at transcript level;
KW   Calcium channel impairing toxin; Disulfide bond;
KW   Ion channel impairing toxin; Neurotoxin; Secreted; Signal; Toxin;
KW   Voltage-gated calcium channel impairing toxin.
FT   SIGNAL          1..19
FT                   /evidence="ECO:0000255"
FT   CHAIN           20..238
FT                   /note="Cysteine-rich venom protein 2"
FT                   /id="PRO_0000006277"
FT   DOMAIN          38..164
FT                   /note="SCP"
FT   DOMAIN          200..233
FT                   /note="ShKT"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01005"
FT   DISULFID        75..153
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01005"
FT   DISULFID        92..165
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01005"
FT   DISULFID        148..162
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01005"
FT   DISULFID        184..191
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01005"
FT   DISULFID        187..196
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01005"
FT   DISULFID        200..233
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01005"
FT   DISULFID        209..227
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01005"
FT   DISULFID        218..231
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01005"
SQ   SEQUENCE   238 AA;  26482 MW;  4A73BA681ED0FEB2 CRC64;
     MIAFIVLLSL AAVLQQSSGT VDFASESSNK KDYQREIVDK HNALRRSVKP TARNMLQMKW
     NSHAAQNAKR SADRCTFAHS PEHTRTVGKF RCGENIFMSS QPFAWSGVVQ AWYDEIKNFV
     YGIGAKPPGS VIGHYTQIVW YKSHLLGCAS AKCSSTKYLY VCQYCPAGNI RSSIATPYKS
     GPSCGDCPSA CVNGLCTNPC EYEDAYTNCN DLVKERKCQT EWIKSQCPAT CFCHNKII