Ion channels are integral membrane proteins composed of several subunits. Ion ch

Question

Ion channels are integral membrane proteins composed of several subunits. Ion channels can be constructed as hetero-oligomers from distinct subunits (left), as homo-oligomers from a single type of subunit (middle), or from a single polypeptide chain organized into repeating motifs, where each motif functions as the equivalent of one subunit (right). In addition to one or more a-subunits that form a central pore, some channels contain auxiliary subunits ((J or y) that modulate the gating of the pore.

Explanation / Answer

Answer:

Figure A is gap juction channel.

Gap junction hemichannels are primarily homo- or hetero-hexamers of connexin proteins.

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