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L-tyrosine regulation and biosynthesis via arogenate dehydrogenase in suspension-cultured cells of Nicotiana silvestris Speg. et Comes
The biosynthetic route to L-tyrosine was identified in isogenic suspension-cultured cells of N. silvestris. Arogenate (NADP+) dehydrogenase, the essential enzyme responsible for the conversion of… Expand
Biosynthesis of phenazine pigments in mutant and wild-type cultures of Pseudomonas aeruginosa.
Pigmentation mutants of Pseudomonas aeruginosa, selected by observed visual differences in coloration from the wild-type strain, were examined for altered patterns of phenazine synthesis. Three… Expand
Enzymology of l-tyrosine biosynthesis in corn (zea ma ys)
Abstract A newly found amino acid, denoted l -arogenate, has been identified as an intermediate in l -tyrosine biosynthesis in corn. Activity for prephena
Variable enzymological patterning in tyrosine biosynthesis as a means of determining natural relatedness among the Pseudomonadaceae.
Enzymes of tyrosine biosynthesis (prephenate dehydrogenase and arogenate dehydrogenase) were characterized in 90 species currently classified within the genera Pseudomonas, Xanthomonas, and… Expand
The aromatic amino acid pathway branches at L-arogenate in Euglena gracilis.
- G. Byng, R. J. Whitaker, C. Shapiro, R. Jensen
- Biology, Medicine
- Molecular and cellular biology
- 1 May 1981
The recently characterized amino acid L-arogenate (Zamir et al., J. Am. Chem. Soc. 102:4499-4504, 1980) may be a precursor of either L-phenylalanine or L-tyrosine in nature. Euglena gracilis is the… Expand
Biotransformations of the cardiovascular drugs mexrenone and canrenone.
- C. Preisig, J. Laakso, U. Mocek, P. Wang, J. Baez, G. Byng
- Chemistry, Medicine
- Journal of natural products
- 6 February 2003
Microbial transformation studies of the cardiovascular drugs mexrenone (1) and canrenone (2) were conducted. Thirty-nine biotransformations of mexrenone and 84 biotransformations of canrenone were… Expand
Isolation of pigmentation mutants of Pseudomonas phenazinium.
Pigmentation mutants of Pseudomonas phenazinium unable to synthesize iodinin, or producing it only in reduced amounts, were isolated. The abilities of the mutants to synthesize nine other phenazines… Expand
Clues from Xanthomonas campestris about the evolution of aromatic biosynthesis and its regulation.
The recent placement of major Gram-negative prokaryotes (Superfamily B) on a phylogenetic tree (including, e.g., lineages leading to Escherichia coli, Pseudomonas aeruginosa, and Acinetobacter… Expand
Diverse enzymological patterns of phenylalanine biosynthesis in pseudomonads are conserved in parallel with deoxyribonucleic acid homology groupings.
l-Tyrosine biosynthesis in nature has proven to be an exceedingly diverse gestalt of variable biochemical routing, cofactor specificity of pathway dehydrogenases, and regulation. A detailed analysis… Expand
Comparative allostery of 3-deoxy-D-arabino-heptulosonate 7-phosphate synthetase as an indicator of taxonomic relatedness in pseudomonad genera.
- R. J. Whitaker, G. Byng, R. Gherna, R. Jensen
- Biology, Medicine
- Journal of bacteriology
- 1 February 1981
Recently, an analysis of the enzymological patterning of L-tyrosine biosynthesis was shown to distinguish five taxonomic groupings among species currently named Pseudomonas, Xanthomonas, or… Expand