Protein of the Day #13: ATP synthase, beta chain

One of my students is doing a comparative genomics study of Plasmodium falciparum (with an ultimate goal of developing better alignment algorithms for organisms with extreme genomes), and I was curious about what the most conserved protein is relative to a model organism such as yeast. Turns out its ATP synthase; not too surprising but one might guess some other things too. The wikipedia entry is pretty good, although perhaps not as good as it could be. It does have a nice cartoon of the structure: