Convergent evolution of RFX transcription factors and ciliary genes predated the origin of metazoans.
Convergent evolution of RFX transcription factors and ciliary genes predated the origin of metazoans.
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DOI:
10.1186/1471-2148-10-130
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发表时间:
2010-05-04
影响因子:
3.4
通讯作者:
Chen N
中科院分区:
文献类型:
--
作者:
Chu JS;Baillie DL;Chen N
Intraflagellar transport (IFT) genes, which are critical for the development and function of cilia and flagella in metazoans, are tightly regulated by the Regulatory Factor X (RFX) transcription factors (TFs). However, how and when their evolutionary relationship was established remains unknown. We have identified evidence suggesting that RFX TFs and IFT genes evolved independently and their evolution converged before the first appearance of metazoans. Both ciliary genes and RFX TFs exist in all metazoans as well as some unicellular eukaryotes. However, while RFX TFs and IFT genes are found simultaneously in all sequenced metazoan genomes, RFX TFs do not co-exist with IFT genes in most pre-metazoans and thus do not regulate them in these organisms. For example, neither the budding yeast nor the fission yeast possesses cilia although both have well-defined RFX TFs. Conversely, most unicellular eukaryotes, including the green alga Chlamydomonas reinhardtii, have typical cilia and well conserved IFT genes but lack RFX TFs. Outside of metazoans, RFX TFs and IFT genes co-exist only in choanoflagellates including M. brevicollis, and only one fungus Allomyces macrogynus of the 51 sequenced fungus genomes. M. brevicollis has two putative RFX genes and a full complement of ciliary genes. The evolution of RFX TFs and IFT genes were independent in pre-metazoans. We propose that their convergence in evolution, or the acquired transcriptional regulation of IFT genes by RFX TFs, played a pivotal role in the establishment of metazoan.
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DOI:
10.1073/pnas.0801314105
发表时间:
2008-07-15
影响因子:
11.1
作者:
Manning, Gerard;Young, Susan L.;Zhai, Yufeng
通讯作者:
Zhai, Yufeng
影响因子:
64.8
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DOI:
10.1099/00221287-50-2-217
发表时间:
1968-01-01
期刊:
JOURNAL OF GENERAL MICROBIOLOGY
影响因子:
--
作者:
ALDRICH, HC
通讯作者:
ALDRICH, HC
影响因子:
64.5
作者:
Huang, MX;Zhou, Z;Elledge, SJ
通讯作者:
Elledge, SJ
影响因子:
3.4
作者:
Aftab S;Semenec L;Chu JS;Chen N
通讯作者:
Chen N