Rare Codon Search

Name (not necessary):  
Nucleotide sequence in the proper reading frame
(case insensitiv, disregarded all letters except: aAgGcCtTuU):


lowercase
uppercase
U       T

Critical frequency (per 1000):  
Organism:  
   

Detailed results:



This tool is useful for finding rare codons in the coding region. Rare codons may cause problems when trying to express protein in a heterologous organism. Codon frequencies have been taken from the "Codon-Usage Database", a comprehensive database containing 392,382 CDS's from 11,713 organisms. The Rare Codon Search tool can also be used for the translation of nucleic acids

For the translation of nucleic acids use the "Six-Frame Translation" tool. For the manipulation of nucleic acid sequences (reverse, reverse/complement, double stranded) use the Sequence Utilities tool.