| >> BUG *** Kazusa output error *** BUG << |
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Kazusa recently updated their codon usage database. The option to reformat codon usage tables to "A style like CodonFrequency output in GCG Wisconsin Package" is currently not working properly. The last colum "Fraction" is always "0.00". ( example). I talked to Yasukazu Nakamura from Kazusa database and he will care for fixing this. Sorry for any inconvenience.
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| purpose |
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Gene synthesis has become a increasingly important tool for genetic engineering. Differences in codon usage preference among organisms lead to a variety of problems concerning heterologous gene expression but can be overcome by rational gene design and DNA synthesis. The gcua tool displays the codon quality grahpically in two different ways - codon usage frequency or relative adaptiveness values. Read more...
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| each triplet position vs. usage table |
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Submit a DNA sequence in raw or fasta format and choose a codon usage table. The sequence will be splitted in codons and the fraction of usage
of each codon in the selected organism will be represented as one column. Additonal to the listed codon usage tables, you can submit your own by
pasting in a http address.
 an example...
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| each codon vs. usage table |
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Submit a DNA sequence in raw or fasta format and choose a codon usage table. The fraction of usage of each codon in the submitted sequence will be
computed and plotted against the fraction of usage of the codon in the selected organism.
an example...
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| compare two usage tables |
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Submit or choose two codon usage tables. The fraction of usage of each codon in the submitted usage tables will be compared graphically.
an example...
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