The Amino Acid Composition of Quadruplex Binding Proteins Reveals a Shared Motif and Predicts New Potential Quadruplex Interactors.
The Amino Acid Composition of Quadruplex Binding Proteins Reveals a Shared Motif and Predicts New Potential Quadruplex Interactors.
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DOI:
10.3390/molecules23092341
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发表时间:
2018-09-13
期刊:
影响因子:
--
通讯作者:
Pečinka P
中科院分区:
文献类型:
--
作者:
Brázda V;Červeň J;Bartas M;Mikysková N;Coufal J;Pečinka P
The importance of local DNA structures in the regulation of basic cellular processes is an emerging field of research. Amongst local non-B DNA structures, G-quadruplexes are perhaps the most well-characterized to date, and their presence has been demonstrated in many genomes, including that of humans. G-quadruplexes are selectively bound by many regulatory proteins. In this paper, we have analyzed the amino acid composition of all seventy-seven described G-quadruplex binding proteins of Homo sapiens. Our comparison with amino acid frequencies in all human proteins and specific protein subsets (e.g., all nucleic acid binding) revealed unique features of quadruplex binding proteins, with prominent enrichment for glycine (G) and arginine (R). Cluster analysis with bootstrap resampling shows similarities and differences in amino acid composition of particular quadruplex binding proteins. Interestingly, we found that all characterized G-quadruplex binding proteins share a 20 amino acid long motif/domain (RGRGR GRGGG SGGSG GRGRG) which is similar to the previously described RG-rich domain (RRGDG RRRGG GGRGQ GGRGR GGGFKG) of the FRM1 G-quadruplex binding protein. Based on this protein fingerprint, we have predicted a new set of potential G-quadruplex binding proteins sharing this interesting domain rich in glycine and arginine residues.
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DOI:
10.1093/bioinformatics/btr064
发表时间:
2011-04-01
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Grant CE;Bailey TL;Noble WS
通讯作者:
Noble WS
DOI:
10.1038/nrg3296
发表时间:
2012-11
期刊:
Nature reviews. Genetics
影响因子:
--
作者:
通讯作者:
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影响因子:
4.3
作者:
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DOI:
10.1016/j.bbagen.2013.06.007
发表时间:
2013-10-01
影响因子:
3
作者:
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通讯作者:
Li, Ding
影响因子:
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作者:
Bhaskara, Ramachandra M.;Mehrotra, Prachi;Srinivasan, Narayanaswamy
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