pfam11221: Med21 (this model, PSSM-Id:402689 is obsolete and has been replaced by 463241)
Subunit 21 of Mediator complex
Med21 has been known as Srb7 in yeasts, hSrb7 in humans and Trap 19 in Drosophila. The heterodimer of the two subunits Med7 and Med21 appears to act as a hinge between the middle and the tail regions of Mediator.