Molecular Biology and Evolution, Vol 2, 92-108, Copyright © 1985 by Society for Molecular Biology and Evolution
RA Jensen
For the first time, a credible prokaryotic phylogenetic tree is being
assembled by Woese and others using quantitative sequence analysis of
oligonucleotides in the highly conservative rRNA. This provides an
evolutionary scale against which the evolutionary steps that led to the
arrangement and regulation of contemporary biochemical pathways can be
measured. This paper presents an emerging evolutionary picture of aromatic
amino acid biosynthesis within a large superfamily assemblage of
prokaryotes that is sufficiently developed to illustrate a new perspective
that will be applicable to many other biochemical pathways.
REVIEW ARTICLE
Biochemical pathways in prokaryotes can be traced backward through evolutionary time
Department of Biological Sciences, State University of New York, Binghamton.
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