malfunction |
gene knockout/complementation demonstrates that the enzyme consists of a fusion protein of a biotin carboxylase and a biotin-carboxyl carrier protein (PccA, HFX_2490), a carboxyltransferase component (PccB, HFX_2478), and an essential small subunit (PccX, HFX_2479). Knockout of pccBX leads to an inability to utilize propionate and a higher intracellular propionyl-CoA level, indicating that the enzyme is indispensable for propionyl-CoA utilization. the pccBX-deleted strain displays multiple phenotypic changes, including retarded cell growth, decreased glucose consumption, impaired PHBV biosynthesis, and wrinkled cells. Genome-wide microarray analysis shows that many genes for glycolysis, pyruvate oxidation, PHBV accumulation, electron transport, and stress responses are affected in the pccBX-deleted strain |
Haloferax mediterranei |