PIAS4 explained

E3 SUMO-protein ligase PIAS4 is one of several protein inhibitor of activated STAT (PIAS) proteins. It is also known as a protein inhibitor of activated STAT protein gamma (PIASg or PIASy), and is an enzyme that in humans is encoded by the PIAS4 gene.[1] [2]

Interactions

PIAS4 has been shown to interact with Mothers against decapentaplegic homolog 6,[3] Mothers against decapentaplegic homolog 7[3] and Lymphoid enhancer-binding factor 1.[4] PIAS4 has been shown to be responsible for the SUMOylation of inhibited Werner syndrome helicase (WRN) trapped on DNA in microsatellite unstable cancer cells. [5]

Further reading

Notes and References

  1. Liu B, Liao J, Rao X, Kushner SA, Chung CD, Chang DD, Shuai K . Inhibition of Stat1-mediated gene activation by PIAS1 . Proc Natl Acad Sci U S A . 95 . 18 . 10626–31 . Sep 1998 . 9724754 . 27945 . 10.1073/pnas.95.18.10626 . 1998PNAS...9510626L . free .
  2. Web site: Entrez Gene: PIAS4 Protein inhibitor of activated STAT, 4.
  3. Imoto . Seiyu . Sugiyama Kenji . Muromoto Ryuta . Sato Noriko . Yamamoto Tetsuya . Matsuda Tadashi . Sep 2003 . Regulation of transforming growth factor-beta signaling by protein inhibitor of activated STAT, PIASy through Smad3 . J. Biol. Chem. . 278 . 36 . 34253–8 . 0021-9258. 12815042 . 10.1074/jbc.M304961200 . free . 2115/28123 . free .
  4. Sachdev . S . Bruhn L . Sieber H . Pichler A . Melchior F . Grosschedl R . Dec 2001 . PIASy, a nuclear matrix-associated SUMO E3 ligase, represses LEF1 activity by sequestration into nuclear bodies . Genes Dev. . 15 . 23 . 3088–103 . 0890-9369. 11731474 . 10.1101/gad.944801 . 312834 .
  5. July 2024 . Rodríguez Pérez F, Natwick D, Schiff L, McSwiggen D, Heckert A, Huey M, Morrison H, Loo M, Miranda RG, Filbin J, Ortega J, Van Buren K, Murnock D, Tao A, Butler R, Cheng K, Tarvestad W, Zhang Z, Gonzalez E, Miller RM, Kelly M, Tang Y, Ho J, Anderson D, Bashore C, Basham S . WRN inhibition leads to its chromatin-associated degradation via the PIAS4-RNF4-p97/VCP axis . Nat. Commun. . 15 . 6059 . 6059 . 39025847. 11258360 . 10.1038/s41467-024-50178-3. 2024NatCo..15.6059R . free.