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2N6R

NMR structure of spider toxin U4-hexatoxin-Hi1a

Summary for 2N6R
Entry DOI10.2210/pdb2n6r/pdb
NMR InformationBMRB: 25778
DescriptorU4-hexatoxin-Hi1a (1 entity in total)
Functional Keywordsspider toxin, inhibitor cystine knot, toxin
Biological sourceHadronyche infensa
Total number of polymer chains1
Total formula weight8821.94
Authors
Pineda, S.S.,Chin, Y.K.-Y.,King, G.F. (deposition date: 2015-08-28, release date: 2016-08-31, Last modification date: 2024-10-30)
Primary citationPineda, S.S.,Chin, Y.K.,Undheim, E.A.B.,Senff, S.,Mobli, M.,Dauly, C.,Escoubas, P.,Nicholson, G.M.,Kaas, Q.,Guo, S.,Herzig, V.,Mattick, J.S.,King, G.F.
Structural venomics reveals evolution of a complex venom by duplication and diversification of an ancient peptide-encoding gene.
Proc.Natl.Acad.Sci.USA, 117:11399-11408, 2020
Cited by
PubMed Abstract: Spiders are one of the most successful venomous animals, with more than 48,000 described species. Most spider venoms are dominated by cysteine-rich peptides with a diverse range of pharmacological activities. Some spider venoms contain thousands of unique peptides, but little is known about the mechanisms used to generate such complex chemical arsenals. We used an integrated transcriptomic, proteomic, and structural biology approach to demonstrate that the lethal Australian funnel-web spider produces 33 superfamilies of venom peptides and proteins. Twenty-six of the 33 superfamilies are disulfide-rich peptides, and we show that 15 of these are knottins that contribute >90% of the venom proteome. NMR analyses revealed that most of these disulfide-rich peptides are structurally related and range in complexity from simple to highly elaborated knottin domains, as well as double-knot toxins, that likely evolved from a single ancestral toxin gene.
PubMed: 32398368
DOI: 10.1073/pnas.1914536117
PDB entries with the same primary citation
Experimental method
SOLUTION NMR
Structure validation

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