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1ne5
From Proteopedia
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Solution Strucuture of HERG Specific Scorpion Toxin CnErg1
Overview
The three-dimensional structure of chemically synthesized CnErg1 (Ergtoxin), which specifically blocks HERG (human ether-a-go-go-related gene) K+ channels, was determined by nuclear magnetic resonance spectroscopy. CnErg1 consists of a triple-stranded beta-sheet and an alpha-helix, as is typical of K+ channel scorpion toxins. The peptide structure differs from the canonical structures in that the first beta-strand is shorter and is nearer to the second beta-strand rather than to the third beta-strand on the C-terminus. There is also a large hydrophobic patch on the surface of the toxin, surrounding a central lysine residue, Lys13. We postulate that this hydrophobic patch is likely to form part of the binding surface of the toxin.
About this Structure
1NE5 is a Single protein structure of sequence from [1]. Full crystallographic information is available from OCA.
Reference
Solution structure of CnErg1 (Ergtoxin), a HERG specific scorpion toxin., Torres AM, Bansal P, Alewood PF, Bursill JA, Kuchel PW, Vandenberg JI, FEBS Lett. 2003 Mar 27;539(1-3):138-42. PMID:12650941
Page seeded by OCA on Thu Feb 21 14:05:09 2008
