| Calling Sequence
| RSCU()
RSCU(dna)
|
| Parameters
| | Name | Type | Description |
|
| dna
| string | optional string of coding DNA |
|
| Return Type
| list |
| Synopsis
| The function RSCU returns the relative synonymous codon usage of a
organism if no argument is given. If a string of coding DNA is given the
relative synonymous codon usage for the string is returned.
Relative synonymous codon usage values are estimated as the ratio of the
observed codon usage to that value expected if there is uniform usage within
synonymous groups
The RSCU for a codon (i) is
RSCUi = Xi / Xj
where Xi is the number of times the ith codon has been used for a given amino acid,
and n is the number of synonymous codons for that amino acid |
| References
| Sharp PM, Tuohy TMF, and Mosurski KR. Codon usage in yeast:
Cluster analysis clearly differentiates highly and lowly expressed genes.
Nucleic Acids Research 14:5125-5143 |