PLK3A_PLARH
ID PLK3A_PLARH Reviewed; 68 AA.
AC A0A6B9KZ66;
DT 23-FEB-2022, integrated into UniProtKB/Swiss-Prot.
DT 17-JUN-2020, sequence version 1.
DT 03-AUG-2022, entry version 4.
DE RecName: Full=U-reduvitoxin-Pr3a {ECO:0000303|PubMed:31752210};
DE Short=U-RDTX-Pr3a {ECO:0000303|PubMed:31752210};
DE Flags: Precursor;
OS Platymeris rhadamanthus (Red spot assassin bug).
OC Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Hexapoda; Insecta; Pterygota;
OC Neoptera; Paraneoptera; Hemiptera; Heteroptera; Panheteroptera;
OC Cimicomorpha; Reduviidae; Platymeris.
OX NCBI_TaxID=1134088;
RN [1]
RP NUCLEOTIDE SEQUENCE [MRNA].
RC TISSUE=Venom gland;
RX PubMed=31752210; DOI=10.3390/toxins11110673;
RA Walker A.A., Robinson S.D., Undheim E.A.B., Jin J., Han X., Fry B.G.,
RA Vetter I., King G.F.;
RT "Missiles of mass disruption: composition and glandular origin of venom
RT used as a projectile defensive weapon by the assassin bug Platymeris
RT rhadamanthus.";
RL Toxins 11:E673-E673(2019).
CC -!- FUNCTION: Binds reversibly and blocks P/Q-type voltage-gated calcium
CC channels (Cav). {ECO:0000250|UniProtKB:P58608}.
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000305|PubMed:31752210}.
CC -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC {ECO:0000305|PubMed:31752210}.
CC -!- DOMAIN: The presence of a 'disulfide through disulfide knot'
CC structurally defines this protein as a knottin. {ECO:0000305}.
CC -!- SIMILARITY: Belongs to the venom Ptu1-like knottin family.
CC {ECO:0000305}.
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DR EMBL; MN208347; QHB21536.1; -; mRNA.
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.
PE 3: Inferred from homology;
KW Calcium channel impairing toxin; Disulfide bond;
KW Ion channel impairing toxin; Knottin; Neurotoxin; Secreted; Signal; Toxin;
KW Voltage-gated calcium channel impairing toxin.
FT SIGNAL 1..22
FT /evidence="ECO:0000255"
FT CHAIN 23..68
FT /note="U-reduvitoxin-Pr3a"
FT /evidence="ECO:0000305"
FT /id="PRO_5025606948"
FT DISULFID 29..47
FT /evidence="ECO:0000250|UniProtKB:P58606"
FT DISULFID 36..52
FT /evidence="ECO:0000250|UniProtKB:P58606"
FT DISULFID 46..59
FT /evidence="ECO:0000250|UniProtKB:P58606"
SQ SEQUENCE 68 AA; 7107 MW; 9FD1A3269D026FF6 CRC64;
MKAGMKLVLV LVIASIALLA LATEVAGDCI PQGASCNRLS TIPRRCCFPM VCGWDSSTCV
PATINVKP