PPP1R8

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An Error has occurred retrieving Wikidata item for infobox Nuclear inhibitor of protein phosphatase 1 is an enzyme that in humans is encoded by the PPP1R8 gene.[1][2][3] This gene, through alternative splicing, encodes three different isoforms. Two of the protein isoforms encoded by this gene are specific inhibitors of type 1 serine/threonine protein phosphatases and can bind but not cleave RNA. The third protein isoform lacks the phosphatase inhibitory function but is a single-strand endoribonuclease comparable to RNase E of E. coli. This isoform requires magnesium for its function and cleaves specific sites in A+U-rich regions of RNA.[3]

Interactions

PPP1R8 has been shown to interact with PPP1CA,[4][5] Histone deacetylase 2,[4] SF3B1[6] EED[4] and the EZH2 domain of PRC2.[7]

References

  1. Wang M, Cohen SN (November 1994). "ard-1: a human gene that reverses the effects of temperature-sensitive and deletion mutations in the Escherichia coli rne gene and encodes an activity producing RNase E-like cleavages". Proc Natl Acad Sci USA. 91 (22): 10591–5. Bibcode:1994PNAS...9110591W. doi:10.1073/pnas.91.22.10591. PMC 45067. PMID 7524097.
  2. Mishima K, Tsuchiya M, Nightingale MS, Moss J, Vaughan M (May 1993). "ARD 1, a 64-kDa guanine nucleotide-binding protein with a carboxyl-terminal ADP-ribosylation factor domain". J Biol Chem. 268 (12): 8801–7. doi:10.1016/S0021-9258(18)52945-8. PMID 8473324.
  3. 3.0 3.1 "Entrez Gene: PPP1R8 protein phosphatase 1, regulatory (inhibitor) subunit 8".
  4. 4.0 4.1 4.2 Jin Q, van Eynde Aleyde, Beullens Monique, Roy Nivedita, Thiel Gerald, Stalmans Willy, Bollen Mathieu (August 2003). "The protein phosphatase-1 (PP1) regulator, nuclear inhibitor of PP1 (NIPP1), interacts with the polycomb group protein, embryonic ectoderm development (EED), and functions as a transcriptional repressor". J. Biol. Chem. 278 (33): 30677–85. doi:10.1074/jbc.M302273200. ISSN 0021-9258. PMID 12788942.
  5. Ajuh PM, Browne G J, Hawkes N A, Cohen P T, Roberts S G, Lamond A I (February 2000). "Association of a protein phosphatase 1 activity with the human factor C1 (HCF) complex". Nucleic Acids Res. 28 (3): 678–86. doi:10.1093/nar/28.3.678. PMC 102561. PMID 10637318.
  6. Boudrez A, Beullens Monique, Waelkens Etienne, Stalmans Willy, Bollen Mathieu (August 2002). "Phosphorylation-dependent interaction between the splicing factors SAP155 and NIPP1". J. Biol. Chem. 277 (35): 31834–41. doi:10.1074/jbc.M204427200. ISSN 0021-9258. PMID 12105215.
  7. Ferreira M, Verbinnen I, Fardilha M, Van Eynde A, Bollen M (November 2018). "The deletion of the protein phosphatase 1 regulator NIPP1 in testis causes hyperphosphorylation and degradation of the histone methyltransferase EZH2". J. Biol. Chem. 293 (47): 18031–18039. doi:10.1074/jbc.AC118.005577. PMC 6254331. PMID 30305391.

Further reading