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Table 2 Frequency of appearance in the conserved regions analyzed in D. melanogaster and D. virilis of the six possible codon classes that can be obtained from the repetitive [G(CG)N]4 signature

From: A sequence motif enriched in regions bound by the Drosophila dosage compensation complex

Codon class

Frequency

Amino acids encoded

[(CG)NG]n

495

Val, Ala, Glu, Gly, Leu, Pro, Gln, Arg

[CN(CG)]n

123

Leu x 2, Pro x 2, Arg x 2, His, Gln

[N(CG)C]n

62

Ser x 2, Cys, Pro, Arg, Thr, Ala, Gly

[NG(CG)]n

39

Arg x 3, Gly x 2, Cys, Trp, Ser

[G(CG)N]n

36

Ala x 4, Gly x 4

[(CG)CN]n

26

Pro x 4, Ala x 4

  1. For each codon class, the [XXX]n nomenclature refers to the n consecutive codons of the same class produced by the DNA repeat. Given the eight-fold degeneracy of that pattern, the set of codons in each codon class may encode for at most 8 amino acids. The amino acids that each codon class encode are also indicated. Numbers after the x sign indicate how many different codons encode for a same amino acid, when they are more than one.
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BMC Genomics

ISSN: 1471-2164

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