1tx0

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{{STRUCTURE_1tx0| PDB=1tx0 | SCENE= }}
{{STRUCTURE_1tx0| PDB=1tx0 | SCENE= }}
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'''Dihydropteroate Synthetase, With Bound Product Analogue Pteroic Acid, From Bacillus anthracis'''
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===Dihydropteroate Synthetase, With Bound Product Analogue Pteroic Acid, From Bacillus anthracis===
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==Overview==
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Dihydropterate synthase (DHPS) is the target for the sulfonamide class of antibiotics, but increasing resistance has encouraged the development of new therapeutic agents against this enzyme. One approach is to identify molecules that occupy the pterin binding pocket which is distinct from the pABA binding pocket that binds sulfonamides. Toward this goal, we present five crystal structures of DHPS from Bacillus anthracis, a well-documented bioterrorism agent. Three DHPS structures are already known, but our B. anthracis structures provide new insights into the enzyme mechanism. We show how an arginine side chain mimics the pterin ring in binding within the pterin binding pocket. The structures of two substrate analog complexes and the first structure of a DHPS-product complex offer new insights into the catalytic mechanism and the architecture of the pABA binding pocket. Finally, as an initial step in the development of pterin-based inhibitors, we present the structure of DHPS complexed with 5-nitro-6-methylamino-isocytosine.
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(as it appears on PubMed at http://www.pubmed.gov), where 15341734 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15341734}}
==About this Structure==
==About this Structure==
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[[Category: Folate biosynthesis]]
[[Category: Folate biosynthesis]]
[[Category: Pterine]]
[[Category: Pterine]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 10:28:22 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:49:44 2008''

Revision as of 13:49, 28 July 2008

Image:1tx0.png

Template:STRUCTURE 1tx0

Dihydropteroate Synthetase, With Bound Product Analogue Pteroic Acid, From Bacillus anthracis

Template:ABSTRACT PUBMED 15341734

About this Structure

1TX0 is a Single protein structure of sequence from Bacillus anthracis str. a2012. Full crystallographic information is available from OCA.

Reference

Crystal structure of 7,8-dihydropteroate synthase from Bacillus anthracis: mechanism and novel inhibitor design., Babaoglu K, Qi J, Lee RE, White SW, Structure. 2004 Sep;12(9):1705-17. PMID:15341734

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