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MEE12

Gene
MEE12
Protein
TATA box-binding protein-associated factor RNA polymerase I subunit B
Organism
Arabidopsis thaliana
Length
666 amino acids
Function
Component of RNA polymerase I core factor complex that acts as a GTF2B/TFIIB-like factor and plays a key role in multiple steps during transcription initiation such as pre-initiation complex (PIC) assembly and postpolymerase recruitment events in polymerase I (Pol I) transcription. Binds rDNA promoters and plays a role in Pol I recruitment (By similarity). Required for the development of the one-cell zygote and endosperm in embryos (PubMed:15634699). Required for micropylar pollen tube guidance, but has no effect on ovule development and gametophytic cell fate specification (PubMed:18055609). May regulate the transcription of secreted cysteine-rich peptide (CRP) genes in the embryo sac (PubMed:26462908).
Similarity
Belongs to the RRN7/TAF1B family.
Mass
75.475 kDa
Sequence
MICTECENDAFDEEDDGYYYCQRCGVQVENLIQTGVDDGDLIGEGGGTQGALYNPKHRRTEPQPITPSQPRFTDDTSRYSQFKSQFESENGNKELPREVKRAPDSYVDKEPTEPVDFAAETLSYENYYDEARDRYVKAFLMMITYQCDALVDKFNVTPLIIGLVGPISLRYVALSGVYHKDWANNAIRDSEHQSEDGEVKDAKRLKRHKAEPRNIDGKRAVTIWFGILKKTMPLSSSLVISFLACHQAGAPVLPTDIVRWAREGKLPYLSCFLDIREQMGERSAACPVKVSIMARPFQVISAQMLEARASVIADTIGLPLPPVNFYGIASNYIKQLSIPEDKILDLARLIQNWSLPPELYLSTNEQKLPSRVCVMSILIVAIRMLYNINGLGVWERSLGFVNASDGDSETNSGTAEKATEFDTQELLKNLEAKYHEVAAETLESEKDLVSYLSLGKNEFFAGLEEDSPDDTYRIVDNLWNGYPKDEDIECLPKRGRDWDDDVSLNQLSLYDSRFSDGNNPCSSSSRRNESVSIGLDLSSSEHRESSSPEKLKEIAIKRLITDMGDDLFCYIPPRVKVKRLDYLQYVRKKEDGALIYAAHADYYILLRVCAKVAEIDVRNMHRGVLSFERRLAWIEKRIDQVLHLTRPLMTCKHCCDDGNIGEDQDD

Gene
MEE12
Protein
TATA box-binding protein-associated factor RNA polymerase I subunit B
Organism
Arabidopsis thaliana
Length
666 amino acids
Function
Component of RNA polymerase I core factor complex that acts as a GTF2B/TFIIB-like factor and plays a key role in multiple steps during transcription initiation such as pre-initiation complex (PIC) assembly and postpolymerase recruitment events in polymerase I (Pol I) transcription. Binds rDNA promoters and plays a role in Pol I recruitment (By similarity). Required for the development of the one-cell zygote and endosperm in embryos (PubMed:15634699). Required for micropylar pollen tube guidance, but has no effect on ovule development and gametophytic cell fate specification (PubMed:18055609). May regulate the transcription of secreted cysteine-rich peptide (CRP) genes in the embryo sac (PubMed:26462908).
Similarity
Belongs to the RRN7/TAF1B family.
Mass
75.475 kDa
Sequence
MICTECENDAFDEEDDGYYYCQRCGVQVENLIQTGVDDGDLIGEGGGTQGALYNPKHRRTEPQPITPSQPRFTDDTSRYSQFKSQFESENGNKELPREVKRAPDSYVDKEPTEPVDFAAETLSYENYYDEARDRYVKAFLMMITYQCDALVDKFNVTPLIIGLVGPISLRYVALSGVYHKDWANNAIRDSEHQSEDGEVKDAKRLKRHKAEPRNIDGKRAVTIWFGILKKTMPLSSSLVISFLACHQAGAPVLPTDIVRWAREGKLPYLSCFLDIREQMGERSAACPVKVSIMARPFQVISAQMLEARASVIADTIGLPLPPVNFYGIASNYIKQLSIPEDKILDLARLIQNWSLPPELYLSTNEQKLPSRVCVMSILIVAIRMLYNINGLGVWERSLGFVNASDGDSETNSGTAEKATEFDTQELLKNLEAKYHEVAAETLESEKDLVSYLSLGKNEFFAGLEEDSPDDTYRIVDNLWNGYPKDEDIECLPKRGRDWDDDVSLNQLSLYDSRFSDGNNPCSSSSRRNESVSIGLDLSSSEHRESSSPEKLKEIAIKRLITDMGDDLFCYIPPRVKVKRLDYLQYVRKKEDGALIYAAHADYYILLRVCAKVAEIDVRNMHRGVLSFERRLAWIEKRIDQVLHLTRPLMTCKHCCDDGNIGEDQDD