Rare codons cluster.
Rare codons cluster.
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DOI:
10.1371/journal.pone.0003412
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发表时间:
2008
期刊:
影响因子:
3.7
通讯作者:
Clark PL
中科院分区:
文献类型:
--
作者:
Clarke TF 4th;Clark PL
Most amino acids are encoded by more than one codon. These synonymous codons are not used with equal frequency: in every organism, some codons are used more commonly, while others are more rare. Though the encoded protein sequence is identical, selective pressures favor more common codons for enhanced translation speed and fidelity. However, rare codons persist, presumably due to neutral drift. Here, we determine whether other, unknown factors, beyond neutral drift, affect the selection and/or distribution of rare codons. We have developed a novel algorithm that evaluates the relative rareness of a nucleotide sequence used to produce a given protein sequence. We show that rare codons, rather than being randomly scattered across genes, often occur in large clusters. These clusters occur in numerous eukaryotic and prokaryotic genomes, and are not confined to unusual or rarely expressed genes: many highly expressed genes, including genes for ribosomal proteins, contain rare codon clusters. A rare codon cluster can impede ribosome translation of the rare codon sequence. These results indicate additional selective pressures govern the use of synonymous codons, and specifically that local pauses in translation can be beneficial for protein biogenesis.
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影响因子:
10.7
作者:
Endo, T;Ikeo, K;Gojobori, T
通讯作者:
Gojobori, T
影响因子:
4.4
作者:
Widmann, Michael;Clairo, Marie;Pleiss, Juergen
通讯作者:
Pleiss, Juergen
DOI:
10.1016/s0006-291x(02)00226-7
发表时间:
2002-04-26
影响因子:
3.1
作者:
Cortazzo, P;Cerve単ansky, C;Deana, A
通讯作者:
Deana, A
影响因子:
4.4
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通讯作者:
Vidal M
DOI:
10.1080/07391102.2002.10506859
发表时间:
2002-12-01
影响因子:
4.4
作者:
Makhoul, CH;Trifonov, EN
通讯作者:
Trifonov, EN