Figure 1.

Mapping of the interaction domains between the β′-like subunits and the common subunits. The large subunits (A190, B220, and C160) are represented by rectangles and are drawn to scale. The black boxes indicate the conserved regions, more divergent regions are represented by gray boxes (26). The scale and the nomenclature of the regions are indicated above the boxes. Individual clones coding for fragments selected by the ABC27, ABC14.5, and ABC10β screens are represented by horizontal lines. The asterisks indicate the A190 and C160 clones that were constructed to test the interaction of restricted domains with ABC14.5.