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Different organisms use synonymous codons with different preferences. Several measures have been introduced to compute the extent of codon usage bias within a gene or genome, among which the codon adaptation index (CAI) has been shown to be well correlated with mRNA levels of Escherichia coli. In this work an error adaptation index (eAI) is introduced, which estimates the level at which a gene can...
Mycobacteria contain a large number of redundant genes whose functions are difficult to analyze in mutants because there are only two efficient antibiotic resistance genes available for allelic exchange experiments. Sequence-specific recombinbases such as the Flp recombinase can be used to excise resistance markers. Expression of the flp e gene from Saccharomyces cerevisiae is functional for...
Synonymous codon usage and cellular tRNA abundance are thought to be co-evolved in optimizing translational efficiencies in highly expressed genes. Here in this communication by taking the advantage of publicly available gene expression data of rice and Arabidopsis we demonstrated that tRNA gene copy number is not the only driving force favoring translational selection in all highly expressed genes...
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