Potassium ion channel beta subunit

Potassium ion channel beta subunit

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Credit: LAGUNA DESIGN/SCIENCE PHOTO LIBRARY

Caption: Potassium ion channel beta subunit. Molecular model showing the structure a beta subunit of a voltage-dependent potassium (K+) channel. Ion channels are membrane-spanning proteins that form a pathway for the movement of inorganic ions across cell membranes. Beta subunits, which help modify K+ channel gating, form a four-fold symmetric structure. The subunits here enclose the central channel. Each subunit is an oxidoreductase enzyme complete with a nicotinamide co-factor in its active site. This example is modelled on the beta subunit in a potassium ion channel from a brown rat (Rattus norvegicus).

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Keywords: artwork, beta subunit, biochemical, biochemistry, biological, biology, biomolecule, black background, brown rat, cell membrane, cellular, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, cytological, cytology, graphic, illustration, ion channel, macromolecule, microbiological, molecular biology, molecular model, molecular structure, molecule, nicotinamide co-factor, oxidoreductase enzyme, potassium ion channel, protein, proteins, proteomics, rattus norvegicus, structural, transmembrane, voltage-dependent

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