rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
3
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pubmed:dateCreated |
2006-3-21
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pubmed:databankReference |
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pubmed:abstractText |
Homo sapiens L-alpha-glycerol-3-phosphate dehydrogenase 1 (GPD1) catalyzes the reversible biological conversion of dihydroxyacetone (DHAP) to glycerol-3-phosphate. The GPD1 protein was expressed in Escherichia coli, and purified as a fusion protein with glutathione S-transferase. Here we report the apoenzyme structure of GPD1 determined by multiwavelength anomalous diffraction phasing, and other complex structures with small molecules (NAD+ and DHAP) by the molecular replacement method. This enzyme structure is organized into two distinct domains, the N-terminal eight-stranded beta-sheet sandwich domain and the C-terminal helical substrate-binding domain. An electrophilic catalytic mechanism by the epsilon-NH3+ group of Lys204 is proposed on the basis of the structural analyses. In addition, the inhibitory effects of zinc and sulfate on GPDHs are assayed and discussed.
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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 |
Mar
|
pubmed:issn |
0022-2836
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pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
31
|
pubmed:volume |
357
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
858-69
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:16460752-Catalysis,
pubmed-meshheading:16460752-Crystallization,
pubmed-meshheading:16460752-Crystallography, X-Ray,
pubmed-meshheading:16460752-Dihydroxyacetone,
pubmed-meshheading:16460752-Dimerization,
pubmed-meshheading:16460752-Glycerolphosphate Dehydrogenase,
pubmed-meshheading:16460752-Humans,
pubmed-meshheading:16460752-Kinetics,
pubmed-meshheading:16460752-NAD,
pubmed-meshheading:16460752-Phosphates,
pubmed-meshheading:16460752-Protein Conformation,
pubmed-meshheading:16460752-Protein Structure, Secondary,
pubmed-meshheading:16460752-Protein Structure, Tertiary,
pubmed-meshheading:16460752-Recombinant Proteins,
pubmed-meshheading:16460752-Substrate Specificity,
pubmed-meshheading:16460752-Zinc
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pubmed:year |
2006
|
pubmed:articleTitle |
Crystal structures of human glycerol 3-phosphate dehydrogenase 1 (GPD1).
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pubmed:affiliation |
National Laboratory of Biomacromolecules, Institute of Biophysics (IBP), Chinese Academy of Sciences, Beijing 100101, China.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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