Translations:Protein/52/en: Difference between revisions

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Message definition (Protein)
[[Transmembrane protein]]s can also serve as ligand transport proteins that alter the [[Semipermeable membrane|permeability]] of the cell membrane to [[small molecule]]s and ions. The membrane alone has a [[hydrophobic]] core through which [[Chemical polarity|polar]] or charged molecules cannot [[diffusion|diffuse]]. Membrane proteins contain internal channels that allow such molecules to enter and exit the cell. Many [[ion channel]] proteins are specialized to select for only a particular ion; for example, [[potassium]] and [[sodium]] channels often discriminate for only one of the two ions.

Transmembrane proteins can also serve as ligand transport proteins that alter the permeability of the cell membrane to small molecules and ions. The membrane alone has a hydrophobic core through which polar or charged molecules cannot diffuse. Membrane proteins contain internal channels that allow such molecules to enter and exit the cell. Many ion channel proteins are specialized to select for only a particular ion; for example, potassium and sodium channels often discriminate for only one of the two ions.

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