rdf:type |
|
lifeskim:mentions |
umls-concept:C0007382,
umls-concept:C0038925,
umls-concept:C0233820,
umls-concept:C0439855,
umls-concept:C0441712,
umls-concept:C0678594,
umls-concept:C1415615,
umls-concept:C1514562,
umls-concept:C1521802,
umls-concept:C1880389,
umls-concept:C1883204,
umls-concept:C1883221,
umls-concept:C1999230
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pubmed:issue |
13
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pubmed:dateCreated |
1999-7-19
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pubmed:databankReference |
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pubmed:abstractText |
3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) reductase is the rate-limiting enzyme and the first committed step in the biosynthesis of cholesterol in mammals. We have determined the crystal structures of two nonproductive ternary complexes of HMG-CoA reductase, HMG-CoA/NAD+ and mevalonate/NADH, at 2.8 A resolution. In the structure of the Pseudomonas mevalonii apoenzyme, the last 50 residues of the C terminus (the flap domain), including the catalytic residue His381, were not visible. The structures of the ternary complexes reported here reveal a substrate-induced closing of the flap domain that completes the active site and aligns the catalytic histidine proximal to the thioester of HMG-CoA. The structures also present evidence that Lys267 is critically involved in catalysis and provide insights into the catalytic mechanism.
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pubmed:grant |
|
pubmed:commentsCorrections |
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-1464741,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-15299306,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-1634543,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-2123872,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-4289807,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-4395214,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-6783074,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-7792601,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-7908908,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-8347566,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-8473286,
http://linkedlifedata.com/resource/pubmed/commentcorrection/10377386-8810898
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:month |
Jun
|
pubmed:issn |
0027-8424
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pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
22
|
pubmed:volume |
96
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
7167-71
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pubmed:dateRevised |
2009-11-18
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pubmed:meshHeading |
|
pubmed:year |
1999
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pubmed:articleTitle |
Substrate-induced closure of the flap domain in the ternary complex structures provides insights into the mechanism of catalysis by 3-hydroxy-3-methylglutaryl-CoA reductase.
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pubmed:affiliation |
Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
|