1crf

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[[Image:1crf.gif|left|200px]]
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{{STRUCTURE_1crf| PDB=1crf | SCENE= }}
{{STRUCTURE_1crf| PDB=1crf | SCENE= }}
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'''CARDIOTOXIN II FROM TAIWAN COBRA VENOM, NAJA NAJA ATRA: STRUCTURE IN SOLUTION AND COMPARISION AMONG HOMOLOGOUS CARDIOTOXINS'''
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===CARDIOTOXIN II FROM TAIWAN COBRA VENOM, NAJA NAJA ATRA: STRUCTURE IN SOLUTION AND COMPARISION AMONG HOMOLOGOUS CARDIOTOXINS===
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==Overview==
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The three-dimensional structure in solution of cardiotoxin II, a membrane toxin from the venom of Taiwan cobra, Naja naja atra, was determined using 1H nuclear magnetic resonance spectroscopy and molecular modeling based on the hybrid distance geometry/dynamic simulated annealing technique. A complete sequence-specific proton assignment was obtained, and the secondary structures of the protein were determined from information on nuclear Overhauser effect connectivities, coupling constants, and hydrogen exchange were confirmed using the main-chain-directed strategy. Twelve simulated annealing structures found to be within a single family were selected based on the condition of distance constraint violation less than 0.02 nm and the dihedral angle violation less than 4 degrees. The average atomic root mean square deviation between the selected structures and their geometric average are 0.079 nm for the backbone atoms and 0.137 nm for all heavy atoms; they are 0.044 nm and 0.117 nm, respectively, when considering the secondary structural residues only. The molecule adopts a compact structure consisting of three major loops emerging from a globular head. These loops contain five strands to form double- and a triple-stranded antiparallel beta sheets. Comparisons are made between this structure and those of its homologous cardiotoxins in order to derive further information on their structural variations.
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(as it appears on PubMed at http://www.pubmed.gov), where 8089116 is the PubMed ID number.
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{{ABSTRACT_PUBMED_8089116}}
==About this Structure==
==About this Structure==
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1CRF is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Naja_atra Naja atra]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CRF OCA].
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1CRF is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Naja_atra Naja atra]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CRF OCA].
==Reference==
==Reference==
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[[Category: Yu, C.]]
[[Category: Yu, C.]]
[[Category: Cardiotoxin]]
[[Category: Cardiotoxin]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 13:02:31 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 21:13:08 2008''

Revision as of 18:13, 30 June 2008

Image:1crf.png

Template:STRUCTURE 1crf

CARDIOTOXIN II FROM TAIWAN COBRA VENOM, NAJA NAJA ATRA: STRUCTURE IN SOLUTION AND COMPARISION AMONG HOMOLOGOUS CARDIOTOXINS

Template:ABSTRACT PUBMED 8089116

About this Structure

1CRF is a Single protein structure of sequence from Naja atra. Full experimental information is available from OCA.

Reference

Cardiotoxin II from Taiwan cobra venom, Naja naja atra. Structure in solution and comparison among homologous cardiotoxins., Bhaskaran R, Huang CC, Tsai YC, Jayaraman G, Chang DK, Yu C, J Biol Chem. 1994 Sep 23;269(38):23500-8. PMID:8089116

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