3ASI:
reference: Structural Basis for Variant-Specific Neuroligin-Binding by alpha-Neurexin., Tanaka H, Nogi T, Yasui N, Iwasaki K, Takagi J, PLoS One. 2011 Apr 28;6(4):e19411. PMID: 21552542

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).