Domain organization of EIF2AKs.

<p>Domain organization of the representative sequences from across the evolutionary lineage is shown. (1)(a) to (1)(d) show the domains of <i>Homo sapiens’</i> EIF2AK1, EIF2AK2, EIF2AK3, EIF2AK4. (2)(a) to (2)(d) show the domains of <i>Xenopus tropicalis’</i> EIF2AK1, EIF2AK2, EIF2AK3, and EIF2AK4. (3)(a), (3)(b) show the domains of EIF2AK3 and EIF2AK4 of <i>Musca domestica</i>. (4)(a) shows the domain of EIF2AK4 from <i>Saccharomyces cerevisiae</i>. (5)(a) shows the domain of STPK from <i>Bacillus subtilis</i>.