Fig. S3.

Crystal packing environments of the N and C termini of the HSA^Swr1 helix. (A) Crystal packing environment of the N-terminal end of the HSA^Swr1 helix. Arp4 and the HSA helix within one asymmetry unit are colored as in Fig. 1A, and the nearby molecules in the crystal lattice were colored gray. (B) Crystal packing environment of the C-terminal end of the HSA^Swr1 domain. Both the N- and C-terminal ends of the HSA^Swr1 domain are free of crystal packing interactions.