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CobQ/CobB/MinD/ParA nucleotide binding domain
This family consists of various cobyrinic acid a,c-diamide synthases. These include CbiA Swiss:P29946 and CbiP Swiss:Q05597 from S.typhimurium [4], and CobQ Swiss:Q52686 from R. capsulatus [3]. These amidases catalyse amidations to various side chains of hydrogenobyrinic acid or cobyrinic acid a,c-diamide in the biosynthesis of cobalamin (vitamin B12) from uroporphyrinogen III. Vitamin B12 is an important cofactor and an essential nutrient for many plants and animals and is primarily produced by bacteria [4]. The family also contains dethiobiotin synthetases as well as the plasmid partitioning proteins of the MinD/ParA family [6]. [1]. 9742225. Cobalamin (vitamin B12) biosynthesis: identification and. characterization of a Bacillus megaterium cobI operon.. Raux E, Lanois A, Warren MJ, Rambach A, Thermes C;. Biochem J 1998;335:159-166.. [2]. 9742226. Cobalamin (vitamin B12) biosynthesis: functional. characterization of the Bacillus megaterium cbi genes required. to convert uroporphyrinogen III into cobyrinic acid a,c-diamide.. Raux E, Lanois A, Rambach A, Warren MJ, Thermes C;. Biochem J 1998;335:167-173.. [3]. 7635831. Identification and sequence analysis of genes involved in late. steps in cobalamin (vitamin B12) synthesis in Rhodobacter. capsulatus.. Pollich M, Klug G;. J Bacteriol 1995;177:4481-4487.. [4]. 8501034. Characterization of the cobalamin (vitamin B12) biosynthetic. genes of Salmonella typhimurium.. Roth JR, Lawrence JG, Rubenfield M, Kieffer-Higgins S, Church. GM;. J Bacteriol 1993;175:3303-3316.. [5]. 10966576. The synthetase domains of cobalamin biosynthesis. amidotransferases cobB and cobQ belong to a . TRUNCATED at 1650 bytes (from Pfam)
molybdopterin-guanine dinucleotide biosynthesis protein MobB
This protein contains a P-loop. (from Pfam)
molybdopterin-guanine dinucleotide biosynthesis protein B
molybdopterin-guanine dinucleotide biosynthesis protein B catalyzes the attachment of the guanine dinucleotide to molybdopterin
This molybdenum cofactor biosynthesis enzyme is similar to the urease accessory protein UreG and to the hydrogenase accessory protein HypB, both GTP hydrolases involved in loading nickel into the metallocenters of their respective target enzymes.
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