1jsc: Difference between revisions

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


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{{STRUCTURE_1jsc|  PDB=1jsc  |  SCENE=  }}  
{{STRUCTURE_1jsc|  PDB=1jsc  |  SCENE=  }}  


'''Crystal Structure of the Catalytic Subunit of Yeast Acetohydroxyacid Synthase: A target for Herbicidal Inhibitors'''
===Crystal Structure of the Catalytic Subunit of Yeast Acetohydroxyacid Synthase: A target for Herbicidal Inhibitors===




==Overview==
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Acetohydroxyacid synthase (AHAS; EC 4.1.3.18) catalyzes the first step in branched-chain amino acid biosynthesis. The enzyme requires thiamin diphosphate and FAD for activity, but the latter is unexpected, because the reaction involves no oxidation or reduction. Due to its presence in plants, AHAS is a target for sulfonylurea and imidazolinone herbicides. Here, the crystal structure to 2.6 A resolution of the catalytic subunit of yeast AHAS is reported. The active site is located at the dimer interface and is near the proposed herbicide-binding site. The conformation of FAD and its position in the active site are defined. The structure of AHAS provides a starting point for the rational design of new herbicides.
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{{ABSTRACT_PUBMED_11902841}}


==About this Structure==
==About this Structure==
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[[Category: Herbicide inhibition]]
[[Category: Herbicide inhibition]]
[[Category: Thiamin diphosphate]]
[[Category: Thiamin diphosphate]]
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