Evolution of the GC content of the histone 3 gene in seven Drosophila species

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概要

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• The molecular evolution of the histone multigene family was studied by cloning and determining the nucleotide sequences of the histone 3 genes in seven Drosophila species, D. takahashii, D. lutescens, D. ficusphila, D. persimilis, D.pseudoobscura, D. americana and D. immigrans. CT repeats, a TATA box and an AGTG motif in the 5 region, and a hairpin loop and purine-rich motifs (CAA(T/G)GAGA) in the 3 region were conserved even in distantly related species. In D. hydei and D.americana, the GC content at the third codon position in the protein coding region was relatively low (49% and 45%), while in D. takahashii and D. lutescens it was relatively high (64% and 65%). The non- significant correlation between the GC contents in the 3 region and at the third codon position as well as the evidence of less constraint in the 3 region suggested that mutational bias may not be the major mechanism responsible for the biased nucleotide change at the third codon position or for codon usage bias.

• 日本遺伝学会の論文
• 2003-08-25

著者

• Matsuo Yoshinori

  Laboratory Of Adaptive Evolution Faculty Of Integrated Arts And Sciences The University Of Tokushima

関連論文

• Molecular evolutionary analysis of a histone gene repeating unit from Drosophila simulans
• Evolution of the GC content of the histone 3 gene in seven Drosophila species
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