Developmental stage and level of codon usage bias in Drosophila.
Developmental stage and level of codon usage bias in Drosophila.
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果蝇的发育阶段和密码子使用偏差水平。
DOI:
10.1093/molbev/msn189
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发表时间:
2008
影响因子:
10.7
通讯作者:
Powell,JeffreyR
中科院分区:
文献类型:
--
作者:
Vicario,Saverio;Mason,ChristopherE;White,KevinP;Powell,JeffreyR
Codon usage bias (CUB) is a ubiquitous observation in molecular evolution. As a model, Drosophila has been particularly well-studied and indications show that selection at least partially controls codon usage, probably through selection for translational efficiency. Although many aspects of Drosophila CUB have been studied, this is the first study relating codon usage to development in this holometabolous insect with very different life stages. Here we ask the question: What developmental stage ofDrosophila melanogasterhas the greatest CUB? Genes with maximum expression in the larval stage have the greatest overall CUB when compared with embryos, pupae, and adults. (The same pattern was observed inDrosophila pseudoobscura, see Supplementary Material online.) We hypothesize this is related to the very rapid growth of larvae, placing increased selective pressure to produce large amounts of protein: a 300-fold increase requiring an approximate doubling of protein content every 10 h. Genes with highest expression in adult males and early embryos, stages with the least de novo protein synthesis, display the least CUB. These results are consistent with the hypothesis that CUB is caused (at least in part) by selection for efficient protein production. This seems to hold on the individual gene level (highly expressed genes are more biased than lowly expressed genes) as well as on a more global scale where genes with maximum expression during times of very rapid growth and protein synthesis are more biased than genes with maximum expression during times of low growth.
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影响因子:
3.3
作者:
H. Akashi;S. Schaeffer
通讯作者:
H. Akashi;S. Schaeffer
影响因子:
2.2
作者:
P. Schreuders;J. Kassis;K. W. Cole;U. Schneider;A. Mahowald;P. Mazur
通讯作者:
P. Mazur
DOI:
--
发表时间:
1966
期刊:
影响因子:
--
作者:
R. Church;F. W. Robertson
通讯作者:
F. W. Robertson
影响因子:
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作者:
S. Stearns;M. Kaiser;E. Hillesheim
通讯作者:
E. Hillesheim
DOI:
--
发表时间:
1997
期刊:
Evolution; international journal of organic evolution
影响因子:
--
作者:
Mauro Santos;D. J. Borash;A. Joshi;Nira Bounlutay;L. Mueller
通讯作者:
L. Mueller