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. Author manuscript; available in PMC: 2010 Mar 10.
Published in final edited form as: Biochemistry. 2009 Mar 10;48(9):1936–1944. doi: 10.1021/bi801727m

Fig. 6.

Fig. 6

Variations in helical packing in different positions throughout the Tm14 structure. Subunits A and B shown in gray and purple, respectively. The heptad is represented by sites a-f in the helical wheel formation. The helical packing in the Tm14 structure is not regular but varies significantly across the length of the receptor. Top: mixed x-da layers packing; Center: da-layer packing; Bottom: x-layer packing.