Pre-mRNA cleavage complex II protein Clp1 , Polynucleotide kinase Clp1 , clp1 , Polyribonucleotide 5-hydroxyl-kinase Clp1 , Polyadenylation factor Clp1
Polynucleotide kinase that can phosphorylate the 5-hydroxyl groups of double-stranded RNA (dsRNA), single-stranded RNA (ssRNA), double stranded DNA (dsDNA) and double-stranded DNA:RNA hybrids. dsRNA is phosphorylated more efficiently than dsDNA, and the RNA component of a DNA:RNA hybrid is phosphorylated more efficiently than the DNA component. Plays a role in both tRNA splicing and mRNA 3-end formation. Component of the tRNA splicing endonuclease complex: phosphorylates the 5-terminus of the tRNA 3-exon during tRNA splicing, this phosphorylation event is a prerequisite for the subsequent ligation of the two exon halves and the production of a mature tRNA. Its role in tRNA splicing and maturation is required for cerebellar development. Component of the pre-mRNA cleavage complex II (CF-II), which seems to be required for mRNA 3-end formation. Also phosphorylates the 5-terminus of exogenously introduced short interfering RNAs (siRNAs), which is a necessary prerequisite for their incorporation into the RNA-induced silencing complex (RISC). However, endogenous siRNAs and microRNAs (miRNAs) that are produced by the cleavage of dsRNA precursors by dicer1 already contain a 5-phosphate group, so this protein may be dispensible for normal RNA-mediated gene silencing.
Molekulargewicht:
54.3 kDa (predicted)
TMPH-03712
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