BIOINORGANIC CHEMISTRY A Short Course Second Edition

B

1BL8

Side View

Extracellular Side

membrane

membrane

Intracellular Side

34 Å

Figure 5.5 (Continued) (B) Side view of the K + ion channel, PDB: 1BL8. Visualized
using CambridgeSoft Chem3D Ultra 10.0 with notations in ChemDraw Ultra 10.0.
(Printed with permission of CambridgeSoft Corporation.)

S1-

S4

S1-

S4

NH 2

*

*

**

Connectors

T1 domain

β subunit

Figure 5.6 Composite model of a voltage - dependent K + channel. (From Figure 5 of
reference 16. Reprinted with permission of AAAS.)