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2017 ; 27
(7
): 898-915
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English Wikipedia
Class I histone deacetylases are major histone decrotonylases: evidence for
critical and broad function of histone crotonylation in transcription
#MMPMID28497810
Wei W
; Liu X
; Chen J
; Gao S
; Lu L
; Zhang H
; Ding G
; Wang Z
; Chen Z
; Shi T
; Li J
; Yu J
; Wong J
Cell Res
2017[Jul]; 27
(7
): 898-915
PMID28497810
show ga
Recent studies on enzymes and reader proteins for histone crotonylation support a
function of histone crotonylation in transcription. However, the enzyme(s)
responsible for histone decrotonylation (HDCR) remains poorly defined. Moreover,
it remains to be determined if histone crotonylation is physiologically
significant and functionally distinct from or redundant to histone acetylation.
Here we present evidence that class I histone deacetylases (HDACs) rather than
sirtuin family deacetylases (SIRTs) are the major histone decrotonylases, and
that histone crotonylation is as dynamic as histone acetylation in mammalian
cells. Notably, we have generated novel HDAC1 and HDAC3 mutants with impaired
HDAC but intact HDCR activity. Using these mutants we demonstrate that selective
HDCR in mammalian cells correlates with a broad transcriptional repression and
diminished promoter association of crotonylation but not acetylation reader
proteins. Furthermore, we show that histone crotonylation is enriched in and
required for self-renewal of mouse embryonic stem cells.