Maternal Effect Embryo Arrest 12 Protein 抗体

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). {ECO:0000250|UniProtKB:P40992, ECO:0000269|PubMed:15634699, ECO:0000269|PubMed:18055609, ECO:0000269|PubMed:26462908}.