The lysine, leucine, and arginine biosynthetic routes in and in (see references in the text)
Taken from "The primordial metabolism: an ancestral interconnection between leucine, arginine, and lysine biosynthesis"
BMC Evolutionary Biology 2007;7(Suppl 2):S3-S3.
Published online 16 Aug 2007
PMCID:PMC1963480.Genes sharing the same colour and the same level are homologs. Genes coloured in white have no homolog in the metabolic routes studied in this work.