Figure 2
The crystal structure of HsfPD1 at 3.3 Å resolution. (a) HsfPD1 showing a trimeric architecture (three monomer subunits; blue, red and green). (b) One HsfPD1 subunit with labelled secondary structure showing a novel domain arrangement: N-TrpRing:KG:TrpRing-C (proposed N-terminal TrpRing domain, green; KG domain, red; C-terminal TrpRing, blue). (c) 29 N-terminal HsfPD1 residues superimpose on 29 C-terminal HsfPD1 residues with an r.m.s.d. of 1.16 Å for the backbone (29 N-terminal residues, green; original C-terminal TrpRing, blue). βW11–3, proposed novel TrpRing; αKG1–3, KG-domain helices [KG-domain β-strand labels omitted for clarity in (b)]; βW21–5, original TrpRing [βW23 omitted for clarity in (c)]. |