An Autoinhibitory Mechanism for Nonsyntaxin Snare Proteins Revealed by the Structure of Ykt6P
Tochio, H., Tsui, M.M.K., Banfield, D.K., Zhang, M.(2001) Science 293: 698
- PubMed: 11474112 
- DOI: https://doi.org/10.1126/science.1062950
- Primary Citation of Related Structures:  
1H8M, 1IOU - PubMed Abstract: 
Ykt6p is a nonsyntaxin SNARE implicated in multiple intracellular membrane trafficking steps. Here we present the structure of the NH2-terminal domain of Ykt6p (Ykt6pN, residues 1 to 140). The structure of Ykt6pN differed entirely from that of syntaxin and resembled the overall fold of the actin regulatory protein, profilin. Like some syntaxins, Ykt6p adopted a folded back conformation in which Ykt6pN bound to its COOH-terminal core domain. The NH2-terminal domain plays an important biological role in the function of Ykt6p, which in vitro studies revealed to include influencing the kinetics and proper assembly of SNARE complexes.
Organizational Affiliation: 
Department of Biochemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People's Republic of China.