4JEU:
reference: Syntaxin1a variants lacking an N-peptide or bearing the LE mutation bind to Munc18a in a closed conformation., Colbert KN, Hattendorf DA, Weiss TM, Burkhardt P, Fasshauer D, Weis WI, Proc Natl Acad Sci U S A. 2013 Jul 30;110(31):12637-42. doi:, 10.1073/pnas.1303753110. Epub 2013 Jul 15. PMID: 23858467

This OCA Structure page
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