FEATURES

FAMILY

DESCRIPTION

Also known as PAN2_NEUCR, par-1, pan2. Catalytic 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 pabp-1. 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 rgb-30/xrn1. May also be involved in post-transcriptional maturation of mRNA poly(A) tails. Forms a heterotrimer with an asymmetric homodimer of the regulatory subunit par-2/pan3 to form the poly(A)-nuclease (PAN) deadenylation complex.

EXTERNAL LINKS

par-1

PAN2-PAN3 deadenylation complex catalytic subunit pan2

par-1

Molecular Synopsis