Figure 2 - full size

 

Figure 2.
Figure 2: Fold of the receptor -transducer complex a, Ribbon diagram of the top view from the cytoplasmic side. -Helices are in red for the receptor and green for the transducer; -strands are in blue and coils in grey.The labels of the symmetry related complex are marked by a prime. The crystallographic symmetry axis is located between TM1 -TM2 and TM1' -TM2'. b, Side view of the complex. The complex is coloured according to B-factor mobility: light red/green (less mobile), dark red/green (mobile). ES, extracellular side; CS, cytoplasmic side. The dotted white lines confine the major hydrophobic core of the proteins. Of note, the actual membrane boundary will not follow these straight lines. The arrows indicate the shortened stalk in HtrI (white) and the site where the helices 1 and 4 of the chemoreceptor domain of H. salinarum HtrII are attached to the transmembrane helices TM1 and TM2 (blue). All figures were generated with MOLSCRIPT and Raster3D.

The above figure is reprinted by permission from Macmillan Publishers Ltd: Nature (2002, 419, 484-487) copyright 2002.