In bacteria, the RNA polymerase (RNAP) consists of the following subunits: α2, β, β’, ω and σ. The core RNAP (α2ββ’ω) possesses the polymerising activity and it associates with one of the sigma factors to initiate transcription ...

Transforming growth factor-β (TGF-β) is the proto-type member of a super family of secreted proteins comprised of several structurally related, but functionally divergent proteins like the BMP, activin, inhibin, mullerian ...