Organismal complexity, protein complexity, and gene duplicability.
Although the evolutionary significance of gene duplication has long been recognized, it remains unclear what determines gene duplicability. We find protein complexity to be an important determinant because the proportion of unduplicated genes (P) increases with the number of subunits in a protein. However, P is high (>or=65%) for both monomers and multimers in yeast, but <or=30% in human except for subunits of large multimers, implying that organismal complexity is a stronger determinant of gene duplicability than protein complexity. The same conclusion is reached from a comparison of family sizes in yeast and human.
Yang
Jing
J
Department of Ecology and Evolution, University of Chicago, 1101 East 57th Street, Chicago, IL 60637, USA.
Lusk
Richard
R
Li
Wen-Hsiung
WH
D019281:Dimerization; D019143:Evolution, Molecular; D020440:Gene Duplication; D006801:Humans; D011506:Proteins / Q000737:chemistry / Q000235:genetics*; D013045:Species Specificity; D015003:Yeasts / Q000235:genetics
D011506:Proteins