Co-transcriptional formation of DNA:RNA hybrid G-quadruplex and potential function as constitutional cis element for transcription control.
Co-transcriptional formation of DNA:RNA hybrid G-quadruplex and potential function as constitutional cis element for transcription control.
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DNA:RNA杂合G-四链体的共转录形成及其作为转录控制顺式元件的潜在功能
DOI:
10.1093/nar/gkt264
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发表时间:
2013-05-01
影响因子:
14.9
通讯作者:
Tan Z
中科院分区:
文献类型:
--
作者:
Zheng KW;Xiao S;Liu JQ;Zhang JY;Hao YH;Tan Z
G-quadruplex formation in genomic DNA is considered to regulate transcription. Previous investigations almost exclusively focused on intramolecular G-quadruplexes formed by DNA carrying four or more G-tracts, and structure formation has rarely been studied in physiologically relevant processes. Here, we report an almost entirely neglected, but actually much more prevalent form of G-quadruplexes, DNA:RNA hybrid G-quadruplexes (HQ) that forms in transcription. HQ formation requires as few as two G-tracts instead of four on a non-template DNA strand. Potential HQ sequences (PHQS) are present in >97% of human genes, with an average of 73 PHQSs per gene. HQ modulates transcription under both in vitro and in vivo conditions. Transcriptomal analysis of human tissues implies that maximal gene expression may be limited by the number of PHQS in genes. These features suggest that HQs may play fundamental roles in transcription regulation and other transcription-mediated processes.
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DOI:
10.1007/978-1-59745-363-9_5
发表时间:
2010
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
作者:
Sun, Daekyu;Hurley, Laurence H
通讯作者:
Hurley, Laurence H
影响因子:
16.6
作者:
Alzeer, Jawad;Vummidi, Balayeshwanth R.;Luedtke, Nathan W.
通讯作者:
Luedtke, Nathan W.
影响因子:
4.8
作者:
Todd, Alan K.
通讯作者:
Todd, Alan K.
影响因子:
7.3
作者:
Sun D;Hurley LH
通讯作者:
Hurley LH
影响因子:
3.7
作者:
Castle JC;Armour CD;Löwer M;Haynor D;Biery M;Bouzek H;Chen R;Jackson S;Johnson JM;Rohl CA;Raymond CK
通讯作者:
Raymond CK