Polypeptide N-acetylgalactosamine transferase 3: a post-translational writer on human health

GARAY, YOHANA CAMILA; CEJAS, ROMINA BEATRIZ; LORENZ, VIRGINIA; ZLOCOWSKI, NATACHA; PARODI, PEDRO; FERRERO, FRANCO ALEJANDRO; ANGELONI, GENARO; GARCÍA, VALENTINA ALFONSO; SENDRA, VICTOR GERMAN; LARDONE, RICARDO DANTE; IRAZOQUI, FERNANDO JOSÉ

JOURNAL OF MOLECULAR MEDICINE (BERLIN, GERMANY)

SPRINGER

Año: 2022 vol. 100 p. 1387 - 1387

0946-2716

bstract: Polypeptide N-acetylgalactosamine transferase 3 (ppGalNAc-T3) is an enzyme involved in the initiation of O-GalNAc glycan biosynthesis. Acting as a writer of frequent post-translational modification (PTM) on human proteins, ppGalNAc-T3 has key functions in the homeostasis of human cells and tissues. We review the relevant roles of this molecule in the biosynthesis of O-GalNAc glycans, as well as in biological functions related to human physiological and pathological conditions. With main emphasis in ppGalNAc-T3, we draw attention to the different ways involved in the modulation of ppGalNAc-Ts enzymatic activity. In addition, we take notice on recent reports of ppGalNAc-T3 having different subcellular localizations, highlight critical intrinsic and extrinsic functions in cellular physiology that are exerted by ppGalNAc-T3-synthesized PTMs, and provide an update on several human pathologies associated with dysfunctional ppGalNAc-T3. Finally, we propose biotechnological tools as