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This entry represents a N-terminal domain found in Mediator complex subunit 17 (MED17) proteins from eukaryotes. Mediator complex subunit was formerly known as Srb4 in yeasts or Trap80 in Drosophila and human. MED17 is a component of the Mediator com ...
This entry represents a N-terminal domain found in Mediator complex subunit 17 (MED17) proteins from eukaryotes. Mediator complex subunit was formerly known as Srb4 in yeasts or Trap80 in Drosophila and human. MED17 is a component of the Mediator complex, a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes [1,2]. The Mediator complex functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. In Drosophila, MED17 is required for adult cell and segment identity specification [1]. Mutations in MED17 are associated with microcephaly, postnatal progressive, with seizures and brain atrophy (MCPHSBA) in humans [3].
Med18 is one subunit of Mediator, a head-module multiprotein complex, that stimulates basal RNA polymerase II (Pol II) transcription. Med18 consists of an eight-stranded beta-barrel with a central pore and three flanking helices. It complexes with Me ...
Med18 is one subunit of Mediator, a head-module multiprotein complex, that stimulates basal RNA polymerase II (Pol II) transcription. Med18 consists of an eight-stranded beta-barrel with a central pore and three flanking helices. It complexes with Med8 and Med20 proteins by forming a heterodimer of two-fold symmetry with Med20 and binding the C-terminal alpha-helix region of Med8 across the top of its barrel. This complex creates a multipartite TBP-binding site that can be modulated by transcriptional activators [1].