ID   NGFV2_HOPST             Reviewed;         245 AA.
AC   Q3HXX9;
DT   06-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   08-NOV-2005, sequence version 1.
DT   03-AUG-2022, entry version 59.
DE   RecName: Full=Venom nerve growth factor 2;
DE            Short=v-NGF-2;
DE            Short=vNGF-2;
DE   Flags: Precursor;
OS   Hoplocephalus stephensii (Stephens' banded snake).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera;
OC   Serpentes; Colubroidea; Elapidae; Notechinae; Hoplocephalus.
OX   NCBI_TaxID=196418;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   TISSUE=Venom gland;
RA   Earl S.T.H., St Pierre L., Birrell G.W., Wallis T.P., Masci P.P.,
RA   de Jersey J., Gorman J.J., Lavin M.F.;
RT   "Identification of nerve growth factor as a ubiquitous component of
RT   Australian elapid snake venoms.";
RL   Submitted (AUG-2005) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Nerve growth factor is important for the development and
CC       maintenance of the sympathetic and sensory nervous systems. It
CC       stimulates division and differentiation of sympathetic and embryonic
CC       sensory neurons as well as basal forebrain cholinergic neurons in the
CC       brain. Its relevance in the snake venom is not clear. However, it has
CC       been shown to inhibit metalloproteinase-dependent proteolysis of
CC       platelet glycoprotein Ib alpha, suggesting a metalloproteinase
CC       inhibition to prevent metalloprotease autodigestion and/or protection
CC       against prey proteases (By similarity). Binds a lipid between the two
CC       protein chains in the homodimer. The lipid-bound form promotes
CC       histamine relase from mouse mast cells, contrary to the lipid-free form
CC       (By similarity). {ECO:0000250|UniProtKB:P61898,
CC       ECO:0000250|UniProtKB:P61899}.
CC   -!- SUBUNIT: Homodimer; non-covalently linked.
CC       {ECO:0000250|UniProtKB:P61898}.
CC   -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250|UniProtKB:P61898}.
CC   -!- TISSUE SPECIFICITY: Expressed by the venom gland.
CC   -!- SIMILARITY: Belongs to the NGF-beta family. {ECO:0000305}.
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DR   EMBL; DQ181916; ABA60128.1; -; mRNA.
DR   AlphaFoldDB; Q3HXX9; -.
DR   SMR; Q3HXX9; -.
DR   PRIDE; Q3HXX9; -.
DR   GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR   GO; GO:0008083; F:growth factor activity; IEA:UniProtKB-KW.
DR   GO; GO:0008289; F:lipid binding; IEA:UniProtKB-KW.
DR   GO; GO:0008191; F:metalloendopeptidase inhibitor activity; ISS:UniProtKB.
DR   GO; GO:0090729; F:toxin activity; IEA:UniProtKB-KW.
DR   Gene3D; 2.10.90.10; -; 1.
DR   InterPro; IPR029034; Cystine-knot_cytokine.
DR   InterPro; IPR020408; Nerve_growth_factor-like.
DR   InterPro; IPR002072; Nerve_growth_factor-rel.
DR   InterPro; IPR020425; Nerve_growth_factor_bsu.
DR   InterPro; IPR019846; Nerve_growth_factor_CS.
DR   InterPro; IPR020433; Venom_nerve_growth_factor.
DR   PANTHER; PTHR11589; PTHR11589; 1.
DR   Pfam; PF00243; NGF; 1.
DR   PIRSF; PIRSF001789; NGF; 1.
DR   PRINTS; PR00268; NGF.
DR   PRINTS; PR01913; NGFBETA.
DR   PRINTS; PR01917; VENOMNGF.
DR   SMART; SM00140; NGF; 1.
DR   SUPFAM; SSF57501; SSF57501; 1.
DR   PROSITE; PS00248; NGF_1; 1.
DR   PROSITE; PS50270; NGF_2; 1.
PE   2: Evidence at transcript level;
KW   Cleavage on pair of basic residues; Disulfide bond; Glycoprotein;
KW   Growth factor; Lipid-binding; Metalloenzyme inhibitor;
KW   Metalloprotease inhibitor; Protease inhibitor; Secreted; Signal; Toxin.
FT   SIGNAL          1..18
FT                   /evidence="ECO:0000255"
FT   PROPEP          19..125
FT                   /evidence="ECO:0000250"
FT                   /id="PRO_0000043288"
FT   CHAIN           126..245
FT                   /note="Venom nerve growth factor 2"
FT                   /id="PRO_0000043289"
FT   REGION          47..69
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        50..65
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   CARBOHYD        148
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000255"
FT   DISULFID        139..206
FT                   /evidence="ECO:0000250|UniProtKB:P61898"
FT   DISULFID        182..234
FT                   /evidence="ECO:0000250|UniProtKB:P61898"
FT   DISULFID        194..236
FT                   /evidence="ECO:0000250|UniProtKB:P61898"
SQ   SEQUENCE   245 AA;  27776 MW;  C4C3AD82C69AB3A0 CRC64;
     MSMLCYTLII AFLIGIWAAP KSEDNVPLGS PATSDLSDTS CAQTHEGLKT SRNTDQRHPA
     PKKAEDQELG SAANIIVNPK LFQKRRFQSP RALFSTQPPP LSRDEQSVEF LDNEDALNRN
     IRAKRENHPV HNRGEHSVCD SISVWVTNKT KATDIKGNMV TVMVDVNLNN EVYKQYFFET
     KCRNPNPNLL QSECRGIDSR LWNSYCTRTQ TFVKALTMEG NQASWRFIRI DTACVCVIIR
     KTDNL