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calpain

[ kal-peyn ]

noun

, Biochemistry.
  1. a protein that is activated by calcium ions in some synapses and in erythrocytes can affect proteins important in determining cellular shape and deformability: a calcium-activated neutral protease.

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Word History and Origins

Origin of calpain1

First recorded in 1980-85; probably cal(cium) ( def ) + p(rote)a(se) ( def ) + -in 2( def )

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