Protein Family Models

This domain is found in bacteria and eukaryotes and is approximately 110 amino acids in length. It is found in association with Pfam:PF00561. The majority of the members in this family carry the exopeptidase active-site residues of Ser-122, Asp-239 and His-269 as in UniProtKB:Q7ZWC2. (from Pfam)

Date:

2024-08-14

This family represents the N-terminal region of the bacterial poly-beta-hydroxybutyrate polymerase (PhaC). Polyhydroxyalkanoic acids (PHAs) are carbon and energy reserve polymers produced in some bacteria when carbon sources are plentiful and another nutrient, such as nitrogen, phosphate, oxygen, or sulfur, becomes limiting. PHAs composed of monomeric units ranging from 3 to 14 carbons exist in nature. When the carbon source is exhausted, PHA is utilised by the bacterium. PhaC links D-(-)-3-hydroxybutyrl-CoA to an existing PHA molecule by the formation of an ester bond [1]. This family appears to be a partial segment of an alpha/beta hydrolase domain. [1]. 10427049. Cloning, molecular analysis, and expression of the polyhydroxyalkanoic acid synthase (phaC) gene from Chromobacterium violaceum. Kolibachuk D, Miller A, Dennis D;. Appl Environ Microbiol 1999;65:3561-3565. (from Pfam)

Date:

2024-10-16

This family represents the C-terminus of bacterial poly(3-hydroxybutyrate) (PHB) de-polymerase. This degrades PHB granules to oligomers and monomers of 3-hydroxy-butyric acid. [1]. 12813072. Ralstonia eutropha H16 encodes two and possibly three intracellular Poly[D-(-)-3-hydroxybutyrate] depolymerase genes. York GM, Lupberger J, Tian J, Lawrence AG, Stubbe J, Sinskey AJ;. J Bacteriol 2003;185:3788-3794. (from Pfam)

Date:

2024-10-16

This catalytic domain is found in a very wide range of enzymes. [1]. 1409539. The alpha/beta hydrolase fold. Ollis DL, Cheah E, Cygler M, Dijkstra B, Frolow F, Franken SM, Harel M, Remington SJ, Silman I, Schrag J, Sussman JL, Verschueren KHG, Goldman A;. Protein Eng 1992;5:197-211. (from Pfam)

Date:

2024-10-16

This HMM represents the PhaC subunit of a heterodimeric form of polyhydroxyalkanoic acid (PHA) synthase. Excepting the PhaC of Bacillus megaterium (which needs PhaR), all members require PhaE (TIGR01834) for activity and are designated class III. This enzyme builds ester polymers for carbon and energy storage that accumulate in inclusions, and both this enzyme and the depolymerase associate with the inclusions. Class III enzymes polymerize short-chain-length hydroxyalkanoates.

Gene:

phaC

Date:

2024-05-30