In fact, it was an under-estimate of total SINGLE CTCF SITES because ~33% total CTCF ChIP Seq PEAKS contain not one but 2 ADJACENT CTCF MOTIFS bound by CTCF Homodimers in CTCFL-negative cells and replaced by CTCF^BORIS Hetero^dimers in CTCFL+positive cells

RT @boris_ctcf: Total sum of genomic CTCF binding sites keeps growing w/ expanding CTCF ChIP Seq analyses to add more cell lines. In total…

RT @boris_ctcf: Total sum of genomic CTCF binding sites keeps growing w/ expanding CTCF ChIP Seq analyses to add more cell lines. In total…

RT @boris_ctcf: Total sum of genomic CTCF binding sites keeps growing w/ expanding CTCF ChIP Seq analyses to add more cell lines. In total…

Total sum of genomic CTCF binding sites keeps growing w/ expanding CTCF ChIP Seq analyses to add more cell lines. In total ∼327,000 non repetitive CTCF sites mapped in 38 lines by 2012, incl. ~ 20K ubiquitously CTCF-bound & ~126K cell-line-specific one

Comprehensive Identification and Annotation of Cell Type-Specific and Ubiquitous CTCF-Binding Sites in the Human... http://t.co/55o8rg9A