1S2F:
reference: Solution structure of the pseudo-5' splice site of a retroviral splicing suppressor., Cabello-Villegas J, Giles KE, Soto AM, Yu P, Mougin A, Beemon KL, Wang YX, RNA 2004 Sep;10(9):1388-1398. PMID: 15317975

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