Protein
Pre-mRNA-processing protein 40B
Organism
Arabidopsis thaliana
Function
Component of the Mediator complex, a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. The Mediator complex, having a compact conformation in its free form, is recruited to promoters by direct interactions with regulatory proteins and serves for the assembly of a functional preinitiation complex with RNA polymerase II and the general transcription factors. Interacts with both the phosphorylated and the dephosphorylated forms of the CTD domain of the RPB1 subunit of the RNA polymerase II.
Similarity
Belongs to the PRPF40 family.
Sequence
MANNHQYPGIQPFQHPNASSIDLPRGFAPPMNFQFLPTIQAPQSEQVARLSSQNFQCVGRGGTVLSIGYPPQSYAPQLLQSMHHSHERPSQLNQVQVQHVPLGPPTLISQPNVSIASGTSLHQPYVQTPDIGMPGFGGPRALFSYPSATSYEGSRVPPQVTGPSIHSQAQQRASIIHTSAESSIMNPTFEQPKAAFLKPLPSQKALTDWVEHTSADGRKYFFNKRTKKSTWEKPVELMTLFERADARTDWKEHSSPDGRKYYYNKITKQSTWTMPEEMKIVREQAEIASVQGPHAEGIIDASEVLTRSDTASTAAPTGLPSQTSTSEGVEKLTLTSDLKQPASVPGSSSPVENVDRVQMSADETSQLCDTSETDGLSVPVTETSAATLVEKDEISVGNSGDSDDMSTKNANQGSGSGPKESQKPMVESEKVESQTEEKQIHQESFSFNNKLEAVDVFKSLLKSAKVGSDWTWEQAMREIINDKRYGALRTLGERKQAFNEFLLQTKRAAEEERLARQKKLYEDFKRMLEECVELTPSTRWSKTVTMFEDDERFKALEREKDRRNIFEDHVSELKEKGRVKALEDRKRNIIEYKRFLESCNFIKPNSQWRKVQDRLEVDERCSRLEKIDQLEIFQEYLRDLEREEEEKKKIQKEELKKVERKHRDEFHGLLDEHIATGELTAKTIWRDYLMKVKDLPVYSAIASNSSGATPKDLFEDAVEDLKKRDHELKSQIKDVLKLRKVNLSAGSTFDEFKVSISEDIGFPLIPDVRLKLVFDDLLERAKEKEEKEARKQTRQTEKLVDMLRSFKDITASSSWEELKHLVEGSEKCSTIGDESFRKRCFEDYVSLLKEQSNRIKQNKKVPEDVREEHDKGRDKYGREKDRVRERDSDDHHKKGAAGKYNHDMNEPHGKERRRSGRDSHNRHRERHTSVKENDTDHFKESHKAGGGHKKSRHQRGWVSEAEVEGKEKRRRKEEAREHTKEEELEDGECGRY