1ayl: Difference between revisions

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[[Image:1ayl.gif|left|200px]]
{{Seed}}
[[Image:1ayl.png|left|200px]]


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{{STRUCTURE_1ayl|  PDB=1ayl  |  SCENE=  }}  
{{STRUCTURE_1ayl|  PDB=1ayl  |  SCENE=  }}  


'''PHOSPHOENOLPYRUVATE CARBOXYKINASE'''
===PHOSPHOENOLPYRUVATE CARBOXYKINASE===




==Overview==
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We report the 1.8 A crystal structure of adenosine triphosphate (ATP)-magnesium-oxalate bound phosphoenolpyruvate carboxykinase (PCK) from Escherichia coli. ATP binding induces a 20 degree hinge-like rotation of the N- and C-terminal domains which closes the active-site cleft. PCK possesses a novel nucleotide-binding fold, particularly in the adenine-binding region, where the formation of a cis backbone torsion angle in a loop glycine residue promotes intimate contacts between the adenine-binding loop and adenine, while stabilizing a syn conformation of the base. This complex represents a reaction intermediate analogue along the pathway of the conversion of oxaloacetate to phosphoenolpyruvate, and provides insight into the mechanistic details of the chemical reaction catalysed by this enzyme.
The line below this paragraph, {{ABSTRACT_PUBMED_8599762}}, adds the Publication Abstract to the page
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{{ABSTRACT_PUBMED_8599762}}


==About this Structure==
==About this Structure==
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[[Category: P-loop]]
[[Category: P-loop]]
[[Category: Protein-atp complex]]
[[Category: Protein-atp complex]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 10:51:06 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 17:52:12 2008''

Revision as of 14:52, 30 June 2008

File:1ayl.png

Template:STRUCTURE 1ayl

PHOSPHOENOLPYRUVATE CARBOXYKINASE

Template:ABSTRACT PUBMED 8599762

About this Structure

1AYL is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.

Reference

Snapshot of an enzyme reaction intermediate in the structure of the ATP-Mg2+-oxalate ternary complex of Escherichia coli PEP carboxykinase., Tari LW, Matte A, Pugazhenthi U, Goldie H, Delbaere LT, Nat Struct Biol. 1996 Apr;3(4):355-63. PMID:8599762

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