1. d.284.1 PurS-like segment-swapped dimer: the swapped segment is made of the first helix and second strand; a single long strand is formed by strands 2 and 3 of each subunit ! PurS-like consists of two alpha+beta subdomains with some similarity to the ferredoxin-like fold 1t3t d1t3ta3 A:30-44,48-61,85-99,102-116,1101-1114
2b9m Y:115-123,125-148,175-185,201-211,340-360