Compositional variation in bacterial genes and proteins with potential expression level

Autor: Sabyasachi Das, Subhagata Ghosh, Chitra Dutta, Archana Pan
Rok vydání: 2005
Předmět:
Zdroj: FEBS Letters. 579:5205-5210
ISSN: 0014-5793
DOI: 10.1016/j.febslet.2005.08.042
Popis: Usage of guanine and cytosine at three codon sites in eubacterial genes vary distinctly with potential expressivity, as predicted by Codon Adaptation Index (CAI). In bacteria with moderate/high GC-content, G3 follows a biphasic relationship, while C3 increases with CAI. In AT-rich bacteria, correlation of CAI is negative with G3, but non-specific with C3. Correlations of CAI with residues encoded by G-starting codons are positive, while with those by C-starting codons are usually negative/random. Average Size/Complexity Score and aromaticity of gene-products decrease with CAI, confirming general validity of cost-minimization principle in free-living eubacteria. Alcoholicity of bacterial gene-products usually decreases with expressivity.
Databáze: OpenAIRE