Genetic Engineering: Principles and Meth
โ Milton H. Saier Jr. (auth.), Jane K. Setlow (eds.)
๐ Library
๐
2002
๐ Springer US
๐ English
<p>Over the past decade, our laboratory and others have been concerned with molecular archaeological studies aimed at revealing the origins and evolutionary histories of permeases (1). These studies have revealed that several different families, defined on the basis of sequence similarities, arose i