About Products Protein Database Contact

ppk26

Gene
ppk26
Protein
PAN2-PAN3 deadenylation complex subunit pan3
Organism
Schizosaccharomyces pombe (strain 972 / ATCC 24843)
Length
589 amino acids
Function
Regulatory subunit of the poly(A)-nuclease (PAN) deadenylation complex, one of two cytoplasmic mRNA deadenylases involved in mRNA turnover. PAN specifically shortens poly(A) tails of RNA and the activity is stimulated by poly(A)-binding protein pab1. PAN deadenylation is followed by rapid degradation of the shortened mRNA tails by the CCR4-NOT complex. Deadenylated mRNAs are then degraded by two alternative mechanisms, namely exosome-mediated 3'-5' exonucleolytic degradation, or deadenlyation-dependent mRNA decaping and subsequent 5'-3' exonucleolytic degradation by xrn1. May also be involved in post-transcriptional maturation of mRNA poly(A) tails. ppk26/pan3 acts as a positive regulator for PAN activity, recruiting the catalytic subunit pan2 to mRNA via its interaction with RNA and with pab1.
Similarity
Belongs to the protein kinase superfamily. PAN3 family.
Mass
67.267 kDa
Sequence
MSVRKNSPASPKPTSRSRESSRSPSVTDLKDHSKAKRTLCRNILLYGSCKHSENGCAFRHDGPFIPSSENLEQYSVKKKLNAASASFQPVRALPVKAAGAAVFVPKSQEKSLFLSRERTPVALSPGSHAINPYNNASMLVNEPFHDDSGVYYTRQNQFKPTLYNLYNPQPSPMPTLLPYERTVNGLFIDDTTRERIERKSEASRQTISALPSIISSYTSLAPLNTKLYRYKEQIGFSSWTYKCTSSIDGNAYVLKRLQDCSINIDTSTVDKLKNVFHPNIVPFHSAFHTDTFHDSSLLLIYDFYPCTTTLGELYLNNSKNSVKLEENRKIPERELWNYFFQLTIALSYLHKSGFACNKLTPSRILVDQTERIRISGCADYELVVSNKPPLEERKKQDFVDLGVVIANLATGRTDMDMSSAARAIYSTYSREFYKAVLYFVSEVPEDKNLELFLQNHIESFFPIMSSPYVECEKMERKISDAFQHGRFFNILCKIMFIIDNNRASREYPIAREKEISLIYLLRDYLFHQIDEDECPVIDLYQVLNRLGKLDAGINQAIALISRDELDCVSVSYGELKAWLDNVYEMEINS