1IFA:
reference: Three-dimensional crystal structure of recombinant murine interferon-beta., Senda T, Shimazu T, Matsuda S, Kawano G, Shimizu H, Nakamura KT, Mitsui Y, EMBO J 1992 Sep;11(9):3193-201. PMID: 1505514

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