2gz2: Difference between revisions

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[[Image:2gz2.gif|left|200px]]
{{Seed}}
[[Image:2gz2.png|left|200px]]


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{{STRUCTURE_2gz2|  PDB=2gz2  |  SCENE=  }}  
{{STRUCTURE_2gz2|  PDB=2gz2  |  SCENE=  }}  


'''Structure of Aspartate Semialdehyde Dehydrogenase (ASADH) from Streptococcus pneumoniae complexed with 2',5'-ADP'''
===Structure of Aspartate Semialdehyde Dehydrogenase (ASADH) from Streptococcus pneumoniae complexed with 2',5'-ADP===




==Overview==
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Aspartate-beta-semialdehyde dehydrogenase (ASADH) catalyzes a critical branch point transformation in amino acid bio-synthesis. The products of the aspartate pathway are essential in microorganisms, and this entire pathway is absent in mammals, making this enzyme an attractive target for antibiotic development. The first structure of an ASADH from a Gram-positive bacterium, Streptococcus pneumoniae, has now been determined. The overall structure of the apoenzyme has a similar fold to those of the Gram-negative and archaeal ASADHs but contains some interesting structural variations that can be exploited for inhibitor design. Binding of the coenzyme NADP, as well as a truncated nucleotide analogue, into an alternative conformation from that observed in Gram-negative ASADHs causes an enzyme domain closure that precedes catalysis. The covalent acyl-enzyme intermediate was trapped by soaking the substrate into crystals of the coenzyme complex, and the structure of this elusive intermediate provides detailed insights into the catalytic mechanism.
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{{ABSTRACT_PUBMED_16895909}}


==About this Structure==
==About this Structure==
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[[Category: Dehydrogenase]]
[[Category: Dehydrogenase]]
[[Category: Oxidoreductase]]
[[Category: Oxidoreductase]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 05:40:22 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:44:16 2008''

Revision as of 13:44, 28 July 2008

File:2gz2.png

Template:STRUCTURE 2gz2

Structure of Aspartate Semialdehyde Dehydrogenase (ASADH) from Streptococcus pneumoniae complexed with 2',5'-ADP

Template:ABSTRACT PUBMED 16895909

About this Structure

2GZ2 is a Single protein structure of sequence from Streptococcus pneumoniae. Full crystallographic information is available from OCA.

Reference

Examination of key intermediates in the catalytic cycle of aspartate-beta-semialdehyde dehydrogenase from a gram-positive infectious bacteria., Faehnle CR, Le Coq J, Liu X, Viola RE, J Biol Chem. 2006 Oct 13;281(41):31031-40. Epub 2006 Aug 8. PMID:16895909

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