Poly [ADP-ribose] polymerase tankyrase-2

Definition:

Poly-ADP-ribosyltransferase involved in various processes such as Wnt signaling pathway, telomere length and vesicle trafficking. Acts as an activator of the Wnt signaling pathway by mediating poly-ADP-ribosylation of AXIN1 and AXIN2, 2 key components of the beta-catenin destruction complex: poly-ADP-ribosylated target proteins are recognized by RNF146, which mediates their ubiquitination and subsequent degradation. Also mediates poly-ADP-ribosylation of BLZF1 and CASC3, followed by recruitment of RNF146 and subsequent ubiquitination. Mediates poly-ADP-ribosylation of TERF1, thereby contributing to the regulation of telomere length. Stimulates 26S proteasome activity.

References:

[1]. Park F Cho-Park, et al. Proteasome regulation by ADP-ribosylation. Cell. 2013 Apr 25;153(3):614-27. [Content Brief]

[2]. Sejal Vyas, et al. Family-wide analysis of poly(ADP-ribose) polymerase activity. Nat Commun. 2014 Jul 21;5:4426. [Content Brief]

[3]. Shih-Min A Huang, et al. Tankyrase inhibition stabilizes axin and antagonizes Wnt signalling. Nature. 2009 Oct 1;461(7264):614-20. [Content Brief]

[4]. Brandoch D Cook, et al. Role for the related poly(ADP-Ribose) polymerases tankyrase 1 and 2 at human telomeres. Mol Cell Biol. 2002 Jan;22(1):332-42. [Content Brief]

[5]. Yue Zhang, et al. RNF146 is a poly(ADP-ribose)-directed E3 ligase that regulates axin degradation and Wnt signalling. Nat Cell Biol. 2011 May;13(5):623-9. [Content Brief]

[6]. Juan I Sbodio, et al. Tankyrase-2 oligomerizes with tankyrase-1 and binds to both TRF1 (telomere-repeat-binding factor 1) and IRAP (insulin-responsive aminopeptidase). Biochem J. 2002 Feb 1;361(Pt 3):451-9. [Content Brief]

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