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2abx

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{{STRUCTURE_2abx| PDB=2abx | SCENE= }}
{{STRUCTURE_2abx| PDB=2abx | SCENE= }}
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'''THE CRYSTAL STRUCTURE OF ALPHA-BUNGAROTOXIN AT 2.5 ANGSTROMS RESOLUTION. RELATION TO SOLUTION STRUCTURE AND BINDING TO ACETYLCHOLINE RECEPTOR'''
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===THE CRYSTAL STRUCTURE OF ALPHA-BUNGAROTOXIN AT 2.5 ANGSTROMS RESOLUTION. RELATION TO SOLUTION STRUCTURE AND BINDING TO ACETYLCHOLINE RECEPTOR===
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==Overview==
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We report collection of 2.5 A resolution X-ray diffraction data from newly grown crystals of the rare 'small unit cell' form of the long snake neurotoxin, alpha-bungarotoxin. The previous model of the molecule has been rebuilt, and refined using least-square methods to a crystallographic residual of 0.24 at 2.5 A resolution. alpha-Bungarotoxin's crystal structure is compared with the crystal structures of two other snake neurotoxins (cobratoxin and erabutoxin), and with its solution structure inferred from spectroscopic studies. Significant differences include less beta-sheet in bungarotoxin's crystal structure than in solution, or in the crystal structures of other neurotoxins, and an unusual orientation in the crystal of the invariant tryptophan. The functional, binding surface of bungarotoxin is described; it consists primarily of hydrophobic and hydrogen-bonding groups and only a few charged side-chains. The structure is compared with experimental binding parameters for neurotoxins.
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(as it appears on PubMed at http://www.pubmed.gov), where 3507686 is the PubMed ID number.
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{{ABSTRACT_PUBMED_3507686}}
==About this Structure==
==About this Structure==
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[[Category: Stroud, R.]]
[[Category: Stroud, R.]]
[[Category: Postsynaptic neurotoxin]]
[[Category: Postsynaptic neurotoxin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 18:51:38 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:53:23 2008''

Revision as of 13:53, 28 July 2008

Image:2abx.png

Template:STRUCTURE 2abx

THE CRYSTAL STRUCTURE OF ALPHA-BUNGAROTOXIN AT 2.5 ANGSTROMS RESOLUTION. RELATION TO SOLUTION STRUCTURE AND BINDING TO ACETYLCHOLINE RECEPTOR

Template:ABSTRACT PUBMED 3507686

About this Structure

2ABX is a Single protein structure of sequence from Bungarus multicinctus. This structure supersedes the now removed PDB entry 1abx. Full crystallographic information is available from OCA.

Reference

The crystal structure of alpha-bungarotoxin at 2.5 A resolution: relation to solution structure and binding to acetylcholine receptor., Love RA, Stroud RM, Protein Eng. 1986 Oct-Nov;1(1):37-46. PMID:3507686

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