1pcm: Difference between revisions

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[[Image:1pcm.jpg|left|200px]]
{{Seed}}
[[Image:1pcm.png|left|200px]]


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{{STRUCTURE_1pcm|  PDB=1pcm  |  SCENE=  }}  
{{STRUCTURE_1pcm|  PDB=1pcm  |  SCENE=  }}  


'''Enzyme-ligand complex of P. aeruginosa PMM/PGM'''
===Enzyme-ligand complex of P. aeruginosa PMM/PGM===




==Overview==
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Enzyme-substrate complexes of phosphomannomutase/phosphoglucomutase (PMM/PGM) reveal the structural basis of the enzyme's ability to use four different substrates in catalysis. High-resolution structures with glucose 1-phosphate, glucose 6-phosphate, mannose 1-phosphate, and mannose 6-phosphate show that the position of the phosphate group of each substrate is held constant by a conserved network of hydrogen bonds. This produces two distinct, and mutually exclusive, binding orientations for the sugar rings of the 1-phospho and 6-phospho sugars. Specific binding of both orientations is accomplished by key contacts with the O3 and O4 hydroxyls of the sugar, which must occupy equatorial positions. Dual recognition of glucose and mannose phosphosugars uses a combination of specific protein contacts and nonspecific solvent contacts. The ability of PMM/PGM to accommodate these four diverse substrates in a single active site is consistent with its highly reversible phosphoryl transfer reaction and allows it to function in multiple biosynthetic pathways in P. aeruginosa.
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{{ABSTRACT_PUBMED_14725765}}


==About this Structure==
==About this Structure==
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[[Category: Phosphohexomutase]]
[[Category: Phosphohexomutase]]
[[Category: Phosphoserine]]
[[Category: Phosphoserine]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 03:41:00 2008''

Revision as of 00:41, 28 July 2008

File:1pcm.png

Template:STRUCTURE 1pcm

Enzyme-ligand complex of P. aeruginosa PMM/PGM

Template:ABSTRACT PUBMED 14725765

About this Structure

1PCM is a Single protein structure of sequence from Pseudomonas aeruginosa. Full crystallographic information is available from OCA.

Reference

Structural basis of diverse substrate recognition by the enzyme PMM/PGM from P. aeruginosa., Regni C, Naught L, Tipton PA, Beamer LJ, Structure. 2004 Jan;12(1):55-63. PMID:14725765

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