Primary Citation of Related Structures: 1EP1, 1EP2, 1EP3
PubMed Abstract:
The fourth step and only redox reaction in pyrimidine de novo biosynthesis is catalyzed by the flavoprotein dihydroorotate dehydrogenase (DHOD). Based on their sequences, DHODs are grouped into two major families. Lactococcus lactis is one of the few organisms with two DHODs, A and B, belonging to each of the two subgroups of family 1 ...
The fourth step and only redox reaction in pyrimidine de novo biosynthesis is catalyzed by the flavoprotein dihydroorotate dehydrogenase (DHOD). Based on their sequences, DHODs are grouped into two major families. Lactococcus lactis is one of the few organisms with two DHODs, A and B, belonging to each of the two subgroups of family 1. The B enzyme (DHODB) is a prototype for DHODs in Gram-positive bacteria that use NAD+ as the second substrate. DHODB is a heterotetramer composed of two different proteins (PyrDB and PyrK) and three different cofactors: FMN, FAD, and a [2Fe-2S] cluster.
Related Citations:
Crystallization and Preliminary X-ray Diffraction Analysis of the Heterotetrameric Dihydroorotate Dehydrogenase B of Lactococcus lactis, a Flavoprotein Enzyme System Consisting of two PyrDB Subunits and Two Iron-Sulfur Cluster Containing PyrK Subunits Rowland, P., Nielsen, F.S., Jensen, K.F., Larsen, S. (1997) Acta Crystallogr D Biol Crystallogr 53: 802
The B Form of Dihydroorotate Dehydrogenase from Lactococcus lactis Consists of two Different Subunits, Encoded by the pyrDb and PyrK Genes, and Contains FMN, FAD and [FeS] Redox Centers Nielsen, F.S., Andersen, P.S., Jensen, K.F. (1996) J Biol Chem 271: 29359
Roles of three prosthetic groups in tetrameric Dihydroorotate dehydrogenase B from Lactococcus lactis Jensen, K.F., Bjornberg, O., Nielsen, F.S., Ottosen, M., Sorensen, P.G., Rowland, P., Norager, S., Larsen, S. (1999) Flavins And Flavoproteins 13th: 599
Organizational Affiliation:
Centre for Crystallographic Studies, Department of Chemistry, University of Copenhagen, Denmark.
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