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2017 ; 25
(1
): 51-60
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Cohesin biology meets the loop extrusion model
#MMPMID28210885
Barrington C
; Finn R
; Hadjur S
Chromosome Res
2017[Mar]; 25
(1
): 51-60
PMID28210885
show ga
Extensive research has revealed that cohesin acts as a topological device,
trapping chromosomal DNA within a large tripartite ring. In so doing, cohesin
contributes to the formation of compact and organized genomes. How exactly the
cohesin subunits interact, how it opens, closes, and translocates on chromatin,
and how it actually tethers DNA strands together are still being elucidated. A
comprehensive understanding of these questions will shed light on how cohesin
performs its many functions, including its recently proposed role as a chromatid
loop extruder. Here, we discuss this possibility in light of our understanding of
the molecular properties of cohesin complexes.