1l5r: Difference between revisions

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{{STRUCTURE_1l5r|  PDB=1l5r  |  SCENE=  }}  
{{STRUCTURE_1l5r|  PDB=1l5r  |  SCENE=  }}  


'''Human liver glycogen phosphorylase a complexed with riboflavin, N-Acetyl-beta-D-Glucopyranosylamine and CP-403,700'''
===Human liver glycogen phosphorylase a complexed with riboflavin, N-Acetyl-beta-D-Glucopyranosylamine and CP-403,700===




==Overview==
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Human liver glycogen phosphorylase (HLGP) catalyzes the breakdown of glycogen to maintain serum glucose levels and is a therapeutic target for diabetes. HLGP is regulated by multiple interacting allosteric sites, each of which is a potential drug binding site. We used surface plasmon resonance (SPR) to screen for compounds that bind to the purine allosteric inhibitor site. We determined the affinities of a series of compounds and solved the crystal structures of three representative ligands with K(D) values from 17-550 microM. The crystal structures reveal that the affinities are partly determined by ligand-specific water-mediated hydrogen bonds and side chain movements. These effects could not be predicted; both crystallographic and SPR studies were required to understand the important features of binding and together provide a basis for the design of new allosteric inhibitors targeting this site.
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==About this Structure==
==About this Structure==
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[[Category: Phosphorylase]]
[[Category: Phosphorylase]]
[[Category: Purine site]]
[[Category: Purine site]]
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Revision as of 11:45, 2 July 2008

File:1l5r.png

Template:STRUCTURE 1l5r

Human liver glycogen phosphorylase a complexed with riboflavin, N-Acetyl-beta-D-Glucopyranosylamine and CP-403,700Human liver glycogen phosphorylase a complexed with riboflavin, N-Acetyl-beta-D-Glucopyranosylamine and CP-403,700

Template:ABSTRACT PUBMED 12204691

About this StructureAbout this Structure

1L5R is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

ReferenceReference

Structure-activity analysis of the purine binding site of human liver glycogen phosphorylase., Ekstrom JL, Pauly TA, Carty MD, Soeller WC, Culp J, Danley DE, Hoover DJ, Treadway JL, Gibbs EM, Fletterick RJ, Day YS, Myszka DG, Rath VL, Chem Biol. 2002 Aug;9(8):915-24. PMID:12204691

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