Protein
Serine/arginine-rich splicing factor SR45
Organism
Arabidopsis thaliana
Function
Involved in 5' and 3' splicing site selection of introns, and may bridge the 5' and 3' components of the spliceosome. Isoform 1 is required during flower petal development and isoform 2 is involved in root growth. Regulates negatively glucose and abscisic acid (ABA) signaling during early seedling development. Involved in the RNA-directed DNA methylation pathway (PubMed:22274613). Modulates KIN10 stability in response to sugars, probably through the splicing regulation of 5PTASE13, a protein implicated in the proteasomal degradation of KIN10 (PubMed:27436712).
Similarity
Belongs to the splicing factor SR family. SR45 subfamily.
Sequence
MAKPSRGRRSPSVSGSSSRSSSRSRSGSSPSRSISRSRSRSRSLSSSSSPSRSVSSGSRSPPRRGKSPAGPARRGRSPPPPPSKGASSPSKKAVQESLVLHVDSLSRNVNEAHLKEIFGNFGEVIHVEIAMDRAVNLPRGHGYVEFKARADAEKAQLYMDGAQIDGKVVKATFTLPPRQKVSSPPKPVSAAPKRDAPKSDNAAADAEKDGGPRRPRETSPQRKTGLSPRRRSPLPRRGLSPRRRSPDSPHRRRPGSPIRRRGDTPPRRRPASPSRGRSPSSPPPRRYRSPPRGSPRRIRGSPVRRRSPLPLRRRSPPPRRLRSPPRRSPIRRRSRSPIRRPGRSRSSSISPRKGRGPAGRRGRSSSYSSSPSPRRIPRKISRSRSPKRPLRGKRSSSNSSSSSSPPPPPPPRKT