Figure 2 - full size

 

Figure 2.
Figure 2. Structure of Amino-Terminal and Poly17Q Regions of Htt17Q-EX1
The structures of the amino-terminal region (green) and poly17Q region (orange) of Htt17Q-EX1 are shown for three different molecules with variable lengths of poly17Q α helix. Also shown are corresponding regions of electron density maps contoured at 1.0 σ (blue).
(A) The short poly17Q helix makes a transition to loop at Gln388 (molecule A, crystal c^95).
(B) The medium poly17Q helix makes a transition to loop at Gln395 (molecule C, crystal c^90).
(C) The long poly17Q helix extends for the length of the polyQ region until Gln402 (molecule C, crystal c[Hg]^99).

The above figure is reprinted by permission from Cell Press: Structure (2009, 17, 1205-1212) copyright 2009.