VKT11_CYRSC
ID VKT11_CYRSC Reviewed; 88 AA.
AC B2ZBB6;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 01-JUL-2008, sequence version 1.
DT 03-AUG-2022, entry version 42.
DE RecName: Full=Kunitz-type kappaPI-theraphotoxin-Hs1b;
DE Short=KappaPI-TRTX-Hs1b;
DE AltName: Full=Kunitz-type serine protease inhibitor huwentoxin-11g11;
DE Short=HW11g11;
DE Flags: Precursor;
OS Cyriopagopus schmidti (Chinese bird spider) (Haplopelma schmidti).
OC Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Chelicerata; Arachnida; Araneae;
OC Mygalomorphae; Theraphosidae; Cyriopagopus.
OX NCBI_TaxID=29017;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=18590782; DOI=10.1016/j.peptides.2008.06.001;
RA Jiang L., Chen J., Peng L., Zhang Y., Xiong X., Liang S.;
RT "Genomic organization and cloning of novel genes encoding toxin-like
RT peptides of three superfamilies from the spider Orinithoctonus huwena.";
RL Peptides 29:1679-1684(2008).
CC -!- FUNCTION: Serine protease inhibitor that inhibits trypsin and blocks
CC voltage-gated potassium channels (Kv). {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250}.
CC -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC -!- SIMILARITY: Belongs to the venom Kunitz-type family. 02 (native)
CC subfamily. {ECO:0000305}.
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; EU635744; ACD01236.1; -; Genomic_DNA.
DR AlphaFoldDB; B2ZBB6; -.
DR SMR; B2ZBB6; -.
DR MEROPS; I02.968; -.
DR ArachnoServer; AS000458; kappa-theraphotoxin-Hs1b.
DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR GO; GO:0015459; F:potassium channel regulator activity; IEA:UniProtKB-KW.
DR GO; GO:0004867; F:serine-type endopeptidase inhibitor activity; IEA:UniProtKB-KW.
DR GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR GO; GO:0044562; P:envenomation resulting in negative regulation of voltage-gated potassium channel activity in another organism; IEA:UniProt.
DR CDD; cd00109; KU; 1.
DR Gene3D; 4.10.410.10; -; 1.
DR InterPro; IPR002223; Kunitz_BPTI.
DR InterPro; IPR036880; Kunitz_BPTI_sf.
DR InterPro; IPR020901; Prtase_inh_Kunz-CS.
DR Pfam; PF00014; Kunitz_BPTI; 1.
DR PRINTS; PR00759; BASICPTASE.
DR SMART; SM00131; KU; 1.
DR SUPFAM; SSF57362; SSF57362; 1.
DR PROSITE; PS00280; BPTI_KUNITZ_1; 1.
DR PROSITE; PS50279; BPTI_KUNITZ_2; 1.
PE 3: Inferred from homology;
KW Disulfide bond; Ion channel impairing toxin;
KW Potassium channel impairing toxin; Protease inhibitor; Secreted;
KW Serine protease inhibitor; Signal; Toxin;
KW Voltage-gated potassium channel impairing toxin.
FT SIGNAL 1..27
FT /evidence="ECO:0000255"
FT PROPEP 28..33
FT /evidence="ECO:0000250"
FT /id="PRO_0000380160"
FT CHAIN 34..88
FT /note="Kunitz-type kappaPI-theraphotoxin-Hs1b"
FT /id="PRO_0000380161"
FT DOMAIN 37..85
FT /note="BPTI/Kunitz inhibitor"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00031"
FT SITE 47..48
FT /note="Reactive bond for trypsin"
FT /evidence="ECO:0000250"
FT DISULFID 37..85
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00031"
FT DISULFID 46..68
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00031"
FT DISULFID 60..81
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00031"
SQ SEQUENCE 88 AA; 9707 MW; 1A99CB06DDD4F652 CRC64;
MGIARILSAV LFLSVLFVVT FPALLSADHH DGRIDTCRLP SDRGRCKASF ERWYFNGRTC
AKFIYGGCGG NGNKFPTQEA CMKRCGKA