Med16 is one of the subunits of the Tail portion of the Mediator complex and is required for lipopolysaccharide gene-expression [2]. This is the small alpha-beta domain found at the C-terminal of Mediator complex subunit 16 [1].

1: Structures of the human Mediator and Mediator-bound preinitiation complex. Chen X, Yin X, Li J, Wu Z, Qi Y, Wang X, Liu W, Xu Y; Science. 2021; [Epub ahead of print] PMID:33958484

2: MED16 and MED23 of Mediator are coactivators of lipopolysaccharide- and heat-shock-induced transcriptional activators. Kim TW, Kwon YJ, Kim JM, Song YH, Kim SN, Kim YJ; Proc Natl Acad Sci U S A. 2004;101:12153-12158. PMID:15297616