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) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Laguna Design |
Bildgröße: | 4180 px × 4180 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |