4HFK:
reference: Structure of the type VI effector-immunity complex (Tae4-Tai4) provides novel insights into the inhibition mechanism of the effector by its immunity protein., Zhang H, Zhang H, Gao ZQ, Wang WJ, Liu GF, Xu JH, Su XD, Dong YH, J Biol Chem. 2013 Feb 22;288(8):5928-39. doi: 10.1074/jbc.M112.434357. Epub 2013 , Jan 3. PMID: 23288853

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