1sqi

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{{STRUCTURE_1sqi| PDB=1sqi | SCENE= }}
{{STRUCTURE_1sqi| PDB=1sqi | SCENE= }}
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'''Structural basis for inhibitor selectivity revealed by crystal structures of plant and mammalian 4-hydroxyphenylpyruvate dioxygenases'''
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===Structural basis for inhibitor selectivity revealed by crystal structures of plant and mammalian 4-hydroxyphenylpyruvate dioxygenases===
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==Overview==
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A high degree of selectivity toward the target site of the pest organism is a desirable attribute for new safer agrochemicals. To assist in the design of novel herbicides, we determined the crystal structures of the herbicidal target enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD; EC 1.13.11.27) from the plant Arabidopsis thaliana with and without an herbicidal benzoylpyrazole inhibitor that potently inhibits both plant and mammalian HPPDs. We also determined the structure of a mammalian (rat) HPPD in complex with the same nonselective inhibitor. From a screening campaign of over 1000 HPPD inhibitors, six highly plant-selective inhibitors were found. One of these had remarkable (&gt;1600-fold) selectivity toward the plant enzyme and was cocrystallized with Arabidopsis HPPD. Detailed comparisons of the plant and mammalian HPPD-ligand structures suggest a structural basis for the high degree of plant selectivity of certain HPPD inhibitors and point to design strategies to obtain potent and selective inhibitors of plant HPPD as agrochemical leads.
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(as it appears on PubMed at http://www.pubmed.gov), where 15301540 is the PubMed ID number.
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{{ABSTRACT_PUBMED_15301540}}
==About this Structure==
==About this Structure==
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[[Category: Yang, C.]]
[[Category: Yang, C.]]
[[Category: Rat 4-hydroxyphenylpyruvate dioxygenase]]
[[Category: Rat 4-hydroxyphenylpyruvate dioxygenase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 09:01:20 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 17:04:46 2008''

Revision as of 14:04, 28 July 2008

Image:1sqi.png

Template:STRUCTURE 1sqi

Structural basis for inhibitor selectivity revealed by crystal structures of plant and mammalian 4-hydroxyphenylpyruvate dioxygenases

Template:ABSTRACT PUBMED 15301540

About this Structure

1SQI is a Single protein structure of sequence from Rattus norvegicus. Full crystallographic information is available from OCA.

Reference

Structural basis for herbicidal inhibitor selectivity revealed by comparison of crystal structures of plant and mammalian 4-hydroxyphenylpyruvate dioxygenases., Yang C, Pflugrath JW, Camper DL, Foster ML, Pernich DJ, Walsh TA, Biochemistry. 2004 Aug 17;43(32):10414-23. PMID:15301540

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