Figure 4 - full size

 

Figure 4.
Figure 4. Structure of the PurM dimer. Ribbon diagram viewed down the twofold axis. Major structural features and the strands of the central b barrel, which form most of the dimer interface, are labeled. For subunit 1, the domain-A ribbon is highlighted in gold, the domain-B ribbon is highlighted in silver and the linker is shown in red. For subunit 2, the ribbon is highlighted in light blue.

The above figure is reprinted by permission from Cell Press: Structure (1999, 7, 1155-1166) copyright 1999.