SINCE 1828
cohesin
noun
co·he·sin
| \ kō-ˈhē-sən
, -zən\
, -zən\
plural cohesins
Definition of cohesin
: a ring-shaped protein complex that produces cohesion between sister chromatids and mediates their separation during cell division and that also plays a role in repairing damaged replicated DNA and regulating genetic transcription
At the cell-cycle stage known as anaphase, cohesins are cleaved and cohesion between sister chromatids dissolves, triggering their segregation.— Paul Megee
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Merriam-Webster unabridged
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