title: Evolutionary implications of different types of microbial enzymology for L-tyrosine biosynthesis.
abstract: Several patterns of enzymology for L-tyrosine biosynthesis exist in modern microorganisms, each differing in the apparent degree of regulatory efficiency. The extent of pathway evolution in a particular organism may reflect the relative selective pressure for regulation encountered in different ecological niches.
mesh_terms: D001412:Bacillus subtilis / Q000201:enzymology; D001419:Bacteria / Q000201:enzymology* / Q000378:metabolism; D001426:Bacterial Proteins / Q000378:metabolism; D005075:Biological Evolution; D000458:Cyanobacteria / Q000201:enzymology; D004463:Ecology; D004926:Escherichia coli / Q000201:enzymology; D005827:Genetics, Microbial; D008954:Models, Biological; D008967:Molecular Biology; D009492:Neurospora crassa / Q000201:enzymology; D010088:Oxidoreductases / Q000378:metabolism; D011550:Pseudomonas aeruginosa / Q000201:enzymology; D012641:Selection, Genetic; D000637:Transaminases / Q000378:metabolism; D014443:Tyrosine / Q000096:biosynthesis*
chemical_list: D001426:Bacterial Proteins; D014443:Tyrosine; D010088:Oxidoreductases; D000637:Transaminases