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. Author manuscript; available in PMC: 2013 Aug 5.
Published in final edited form as: Structure. 2008 Jul;16(7):1138–1146. doi: 10.1016/j.str.2008.03.018

Figure 1. Primary Structures of Recombinant Yeast SNAREs.

Figure 1

(A) Soluble Snc2pS contains amino acids 1–93 of Snc2p. Positions selected for site-directed spin labeling (SDSL) are marked by arrows.

(B) Sso1pHT contains the amino acids 185–290 of Sso1p lacking the N-terminal regulatory Habc domain. This polypeptide includes both the SNARE motif and the transmembrane domain, which are represented by the cylinder and the rectangle, respectively.

(C) Sec9c represents amino acids 401–651 of Sec9 and contains two SNARE motif region, SN1 (amino acids 434–496) and SN2 (amino acids 588–651). The amino acids selected for SDSL are marked by arrows. SNARE motif regions are represented by the cylinders.

(D) Schematic helical wheel model for the SNARE four-helix bundle. The heptad repeats a-g are shown. The labeled a, b and f positions are marked with *.