Porin

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Definition

noun, plural: porins

A transmembrane protein that assemble together with other porins to form a pore across membranes (i.e. plasma membrane, mitochondrial membrane, and nuclear envelope)


Supplement

Porins are proteins that assemble to form a complex that acts as channel where molecules can pass through. Examples of eukaryotic porins include the mitochondrial membrane porins that make up the voltage-dependent anion-selective channel and nucleoporins that form the nuclear pore complex.


Abbreviation / Acronym: por(e) + -in

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