perm ease

permease

[pur-mee-eys, -eyz]
noun Biochemistry.
any of the proteins that mediate the transport of various molecules across biological membranes.

Origin:
< French perméase (1956), equivalent to permé(able) permeable + -ase -ase

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American Heritage
Medical Dictionary

permease per·me·ase (pûr'mē-ās')
n.
An enzyme that promotes the passage of a substance across a cell membrane.

The American Heritage® Stedman's Medical Dictionary
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