4FIS:
reference: The molecular structure of wild-type and a mutant Fis protein: relationship between mutational changes and recombinational enhancer function or DNA binding., Yuan HS, Finkel SE, Feng JA, Kaczor-Grzeskowiak M, Johnson RC, Dickerson RE, Proc Natl Acad Sci U S A 1991 Nov 1;88(21):9558-62. PMID: 1946369

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