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D-Glyceraldehyde-3-Phosphate Dehydrogenase: Three-Dimensional Structure and Evolutionary Significance

By Manfred Buehner, Geoffrey C. Ford, Dino Moras, Kenneth W. Olsen and Michael G. Rossmann

Abstract

A 3.0-Å resolution electron density map of lobster glyceraldehyde-3-phosphate dehydrogenase (EC 1.2.1.12) was computed. The essentially single isomorphous replacement map was very substantially improved by averaging subunits. NAD binds in an open conformation at sites close to subunit interfaces. The coenzyme binding portion of the enzyme has almost the same fold as the corresponding portion of lactate dehydrogenase (EC 1.1.1.27). The presence of this structure in the five enzymes, analyzed so far, that use nucleotide coenzymes might indicate a fundamental primordial structural element

Topics: Biological Sciences: Biochemistry
Year: 1973
DOI identifier: 10.1073/pnas.70.11.3052
OAI identifier: oai:pubmedcentral.nih.gov:427167
Provided by: PubMed Central
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