| Literature DB >> 4843792 |
Abstract
A formula for diference between amino acids combines properties that correlate best with protein residue substitution frequencies: composition, polarity, and molecular volume. Substitution frequencies agree much better with overall chemical difference between exchanging residues than with minimum base changes between their codons. Correlation coefficients show that fixation of mutations between dissimilar amino acids is generally rare.Mesh:
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Year: 1974 PMID: 4843792 DOI: 10.1126/science.185.4154.862
Source DB: PubMed Journal: Science ISSN: 0036-8075 Impact factor: 47.728