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AAA family ATPase
This family includes a wide variety of AAA domains including some that have lost essential nucleotide binding residues in the P-loop. (from Pfam)
GNVR domain-containing protein
This domain is found between two families, Wzz, Pfam:PF02706 and CbiA Pfam:PF01656. There is a highly conserved GNVR sequence motif which characterises this domain. The function is not known. (from Pfam)
Wzz/FepE/Etk N-terminal domain-containing protein
This HMM describes an N-terminal region of homology share by two different classes of chain length determinant proteins (also known as polysaccharide co-polymerases) and by membrane-bound tyrosine kinases such Etk, involved in the polysaccharide export.
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 new family of AT. TRUNCATED at 1650 bytes (from Pfam)
exopolysaccharide transport protein family
The model describes the exopolysaccharide transport protein family in bacteria. The transport protein is part of a large genetic locus which is associated with exopolysaccharide (EPS) biosynthesis. Detailed molecular characterization and gene fusion analysis revealed atleast seven gene products are involved in the overall regulation, which among other things, include exopolysaccharide biosynthesis, property of conferring virulence and exopolysaccharide export.
polysaccharide biosynthesis tyrosine autokinase
Wzc family tyrosine kinases, such as CpsD of Streptococcus agalactiae, work together with cognate proteins to regulate chain length and attachment of exported polysaccharides involved in capsule formation, O-antigen biosynthesis, colanic acid biosynthesis, and similar pathways.
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