nepenthes × hookeriana/tyrosine

Carnivorous plants acquire substantial amounts of nitrogen from insects. The tropical carnivorous plant Nepenthes produces trapping organs called pitchers at the tips of tendrils elongated from leaf ends. Acidic fluid is secreted at the bottoms of the pitchers. The pitcher fluid includes several

Starting from a common tyrosine, yeast xylose reductases (XRs) contain two conserved sequence motifs corresponding to the catalytic signatures of single-domain reductases/epimerases/dehydrogenases (Tyr(n)-(X)3-Lys(n+4)) and aldo/keto reductases (AKRs) (Tyr(n)-(X)28-Lys(n+29)). Tyr(51), Lys(55) and

A systematic analysis of the evolution of aromatic amino acid biosynthesis in the Proteobacteria, previously focussed mainly upon the gamma subdivision, has now been extended to the beta subdivision. Five lineages were studied, represented by Neisseria gonorrhoeae, Nitrosomonas europaea, Alcaligenes