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Mediator complex subunit 29 Mediator is a large complex of up to 33 proteins that is conserved from plants to fungi to humans - the number and representation of individual subunits varying with species. It is arranged into four different sections, a core, a head, a tail and a kinase-active part, and the number of subunits within each of these is what varies with species. Overall, Mediator regulates the transcriptional activity of RNA polymerase II but it would appear that each of the four different sections has a slightly different function. Med29, along with Med11 and Med28, in mammals, is part of the core head-region of the complex. Med29 is the apparent orthologue of the Drosophila melanogaster Intersex protein, which interacts directly with, and functions as a transcriptional coactivator for, the DNA-binding transcription factor Doublesex, so it is likely that mammalian Med29 serves as a target for one or more DNA-binding transcriptional activators.
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Jiyao W et al.(2023). "The conserved domain database in 2023.",