ID   JZT7A_CHIGU             Reviewed;          66 AA.
AC   P0C2X7; B1P1A3;
DT   15-MAY-2007, integrated into UniProtKB/Swiss-Prot.
DT   05-OCT-2010, sequence version 2.
DT   25-MAY-2022, entry version 55.
DE   RecName: Full=U1-theraphotoxin-Cg1a 1;
DE            Short=U1-TRTX-Cg1a;
DE   AltName: Full=Jingzhaotoxin-7;
DE            Short=JZTX-7;
DE   AltName: Full=Jingzhaotoxin-VII;
DE            Short=JZTX-VII;
DE   AltName: Full=Peptide F5-16.20;
DE   Flags: Precursor;
OS   Chilobrachys guangxiensis (Chinese earth tiger tarantula) (Chilobrachys
OS   jingzhao).
OC   Eukaryota; Metazoa; Ecdysozoa; Arthropoda; Chelicerata; Arachnida; Araneae;
OC   Mygalomorphae; Theraphosidae; Chilobrachys.
OX   NCBI_TaxID=278060;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   TISSUE=Venom gland;
RX   PubMed=18581053; DOI=10.1007/s00018-008-8135-x;
RA   Chen J., Deng M., He Q., Meng E., Jiang L., Liao Z., Rong M., Liang S.;
RT   "Molecular diversity and evolution of cystine knot toxins of the tarantula
RT   Chilobrachys jingzhao.";
RL   Cell. Mol. Life Sci. 65:2431-2444(2008).
RN   [2]
RP   PROTEIN SEQUENCE OF 30-63, MASS SPECTROMETRY, AND AMIDATION AT PRO-63.
RC   TISSUE=Venom;
RX   PubMed=17476710; DOI=10.1002/pmic.200600785;
RA   Liao Z., Cao J., Li S., Yan X., Hu W., He Q., Chen J., Tang J., Xie J.,
RA   Liang S.;
RT   "Proteomic and peptidomic analysis of the venom from Chinese tarantula
RT   Chilobrachys jingzhao.";
RL   Proteomics 7:1892-1907(2007).
RN   [3]
RP   PROTEIN SEQUENCE OF 30-63, STRUCTURE BY NMR OF 30-63, AND DISULFIDE BONDS.
RA   Liao Z., Liang S.P.;
RT   "Solution structure of jingzhaotoxin-VII.";
RL   Submitted (AUG-2005) to the PDB data bank.
CC   -!- FUNCTION: Probable ion channel inhibitor.
CC   -!- SUBCELLULAR LOCATION: Secreted.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC   -!- DOMAIN: The presence of a 'disulfide through disulfide knot'
CC       structurally defines this protein as a knottin.
CC   -!- MASS SPECTROMETRY: Mass=3604.5; Method=MALDI; Note=Monoisotopic mass.;
CC       Evidence={ECO:0000269|PubMed:17476710};
CC   -!- SIMILARITY: Belongs to the neurotoxin 10 (Hwtx-1) family. 46 (Jztx-
CC       7/10/12) subfamily. {ECO:0000305}.
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DR   EMBL; EU233834; ABY71653.1; -; mRNA.
DR   PDB; 1ZJQ; NMR; -; A=30-63.
DR   PDB; 2AAP; NMR; -; A=30-63.
DR   PDBsum; 1ZJQ; -.
DR   PDBsum; 2AAP; -.
DR   AlphaFoldDB; P0C2X7; -.
DR   SMR; P0C2X7; -.
DR   ArachnoServer; AS000048; U1-theraphotoxin-Cg1a.
DR   EvolutionaryTrace; P0C2X7; -.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0008200; F:ion channel inhibitor activity; IEA:InterPro.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR   InterPro; IPR011696; Huwentoxin-1.
DR   InterPro; IPR013140; Huwentoxin_CS1.
DR   Pfam; PF07740; Toxin_12; 1.
DR   PROSITE; PS60021; HWTX_1; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Amidation; Direct protein sequencing; Disulfide bond;
KW   Ion channel impairing toxin; Knottin; Neurotoxin; Secreted; Signal; Toxin.
FT   SIGNAL          1..21
FT                   /evidence="ECO:0000255"
FT   PROPEP          22..29
FT                   /evidence="ECO:0000269|PubMed:17476710, ECO:0000269|Ref.3"
FT                   /id="PRO_0000398384"
FT   PEPTIDE         30..63
FT                   /note="U1-theraphotoxin-Cg1a 1"
FT                   /id="PRO_0000287584"
FT   MOD_RES         63
FT                   /note="Proline amide"
FT                   /evidence="ECO:0000269|PubMed:17476710"
FT   DISULFID        31..46
FT                   /evidence="ECO:0000269|Ref.3"
FT   DISULFID        38..51
FT                   /evidence="ECO:0000269|Ref.3"
FT   DISULFID        45..58
FT                   /evidence="ECO:0000269|Ref.3"
FT   STRAND          33..35
FT                   /evidence="ECO:0007829|PDB:1ZJQ"
FT   STRAND          46..52
FT                   /evidence="ECO:0007829|PDB:1ZJQ"
FT   TURN            53..56
FT                   /evidence="ECO:0007829|PDB:1ZJQ"
FT   STRAND          57..60
FT                   /evidence="ECO:0007829|PDB:1ZJQ"
SQ   SEQUENCE   66 AA;  7140 MW;  C60530FC804EECE6 CRC64;
     MKTSALFVIF GLVLLFCNSF AAELKTTGRG CGGLMAGCDG KSTFCCSGYN CSPTWKWCVY
     ARPGRR