Figure 2. Actin can be thought of consisting of
two main domains, each of which can be split into two, smaller subdomains. This
example highlights the grey area of domain definition where one has to draw the
line between what one calls a domain and what one terms a subdomain. The
algorithm split this protein into three domains, which are the ones marked out
by the shading (domain I, subdomain IIa and subdomain IIb).
Figure was produced using MOLSCRIPT [Kraulis, 1991].
