**Author details**

Paul Enríquez

**Conflict of interest**

156 Chromatin and Epigenetics

The author declares no conflicts of interest.

PTM post-translational modification

ATF artificial transcription factor

RVD repeat variable diresidue

pre-RNA precursor CRISPR RNA

tracrRNA trans-activating crRNA

NHEJ nonhomologous end joining

TFO triple helix-forming oligonucleotide

MASPIN mammary serine protease inhibitor

HDR homology-directed repair

HAT histone acetyltransferase

TET ten-eleven translocation

C 5-formylcytosine

C 5-carboxylcytosine

VPR VP64, p65, and Rta

dC 5-methyldeoxycytosine

C 5-hydroxymethylcytosine

m5

hm5

f 5

ca5

sgRNA single-guide RNA

crRNA CRISPR RNA

Cas CRISPR-associated sequences

TALEN transcription activator-like effector nuclease

CRISPR clustered, regularly interspaced, short palindromic repeats

**Acronyms and abbreviations**

ncRNA noncoding RNA

ZFN zinc finger nuclease

Address all correspondence to: penriqu@ncsu.edu

North Carolina State University, Raleigh, NC, United States of America
