G4-ChIP Track Settings
 
G4-ChIP   (All R-loopBase Data tracks)

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 E14  G4-CUT&RUN  1  bigwig_E14_G4_CUTRUN_1   Schema 
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 E14  G4-CUT&RUN  2  bigwig_E14_G4_CUTRUN_2   Schema 
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 mES  G4-CUT&Tag  1  bigwig_mES_G4_CUTTag_1   Schema 
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 mES  G4-CUT&Tag  2  bigwig_mES_G4_CUTTag_2   Schema 
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 mES  G4-CUT&Tag  3  bigwig_mES_G4_CUTTag_3   Schema 
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 mECS  G4ChIP  1  bigwig_mESC_G4_ChIP_1   Schema 
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 mECS  G4ChIP  1  bigbed_mESC_G4-ChIP_2   Schema 
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 mECS  G4ChIP  1  bigbed_mESC_G4-ChIP_1   Schema 
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 mECS  G4ChIP  2  bigwig_mESC_G4_ChIP_2   Schema 
    

Description

We integrates multiple G4 sequencing datasets and uploaded them to G4-ChIP. Because R-loop formation displaces the non-template DNA strand as single-stranded DNA and R-loop regions frequently exhibit positive GC skew, the exposed guanine-rich single strand is prone to fold into G-quadruplex (G4) structures. Consequently, R-loops and G4s show a certain degree of colocalization. This track serves as one of the genomic features for assessing the reliability of R-loop formation. Genomic coordinates were lifted to mm39 assembly using LiftOver.

Reference

Tsai RX, Fang KC, Yang PC et al, TERRA regulates DNA G-quadruplex formation and ATRX recruitment to chromatin. Nucleic Acids Res. 2022 Nov 28;50(21):12217-12234. PMID: 36440760

Lyu J, Shao R, Kwong Yung PY et al, Genome-wide mapping of G-quadruplex structures with CUT&Tag. Nucleic Acids Res. 2022 Feb 22;50(3):e13. PMID: 34792172

ZWulfridge P, Yan Q, Rell N et al, G-quadruplexes associated with R-loops promote CTCF binding. Mol Cell. 2023 Sep 7;83(17):3064-3079.e5. PMID: 37552993