Anti-PARN Antibody Picoband® Fluoro550 Conjugated

Poly (A) -specific ribonuclease (PARN), also known as polyadenylate-specific ribonuclease or deadenylating nuclease (DAN), is an enzyme that in humans is encoded by the PARN gene. The protein encoded by this gene is a 3'-exoribonuclease, with similarity to the RNase D family of 3'-exonucleases. It prefers poly (A) as the substrate, hence, efficiently degrades poly (A) tails of mRNAs. Exonucleolytic degradation of the poly (A) tail is often the first step in the decay of eukaryotic mRNAs. This protein is also involved in silencing of certain maternal mRNAs during oocyte maturation and early embryonic development, as well as in nonsense-mediated decay (NMD) of mRNAs that contain premature stop codons.

3'-exoribonuclease that has a preference for poly (A) tails of mRNAs, thereby efficiently degrading poly (A) tails. Exonucleolytic degradation of the poly (A) tail is often the first step in the decay of eukaryotic mRNAs and is also used to silence certain maternal mRNAs translationally during oocyte maturation and early embryonic development. Interacts with both the 3'-end poly (A) tail and the 5'-end cap structure during degradation, the interaction with the cap structure being required for an efficient degradation of poly (A) tails. Involved in nonsense-mediated mRNA decay, a critical process of selective degradation of mRNAs that contain premature stop codons. Also involved in degradation of inherently unstable mRNAs that contain AU-rich elements (AREs) in their 3'-UTR, possibly via its interaction with KHSRP. Probably mediates the removal of poly (A) tails of AREs mRNAs, which constitutes the first step of destabilization.

1. Entrez Gene: PARN poly (A) -specific ribonuclease (deadenylation nuclease) . 2. Buiting K, Korner C, Ulrich B, Wahle E, Horsthemke B (May 2000) . The human gene for the poly (A) -specific ribonuclease (PARN) maps to 16p13 and has a truncated copy in the Prader-Willi/Angelman syndrome region on 15q11→q13. Cytogenet Cell Genet. 87 (1–2) : 125–31.