Publications

Authors:

Rossignoli, Giada; Phillips, Robert S; Astegno, Alessandra; Menegazzi, Marta; Voltattorni, Carla Borri; Bertoldi, Mariarita

Title:

Phosphorylation of pyridoxal 5'-phosphate enzymes: an intriguing and neglected topic

Year:

2018

Type of item:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Language:

Inglese

Format:

A Stampa

Referee:

Sì

Name of journal:

Amino Acids

ISSN of journal:

0939-4451

N° Volume:

50

Number or Folder:

2

:

Springer Verlag Wien

Page numbers:

205-215

Keyword:

phosphorylation; pyridoxal 5′-phosphate enzymes; regulation; structure–function relationship

Short description of contents:

Pyridoxal 5'-phosphate (PLP)-dependent enzymes catalyze a wide range of reactions of amino acids and amines, with the exception of glycogen phosphorylase which exhibits peculiar both substrate preference and chemical mechanism. They represent about 4% of the gene products in eukaryotic cells. Although structure-function investigations regarding these enzymes are copious, their regulation by post-translational modifications is largely unknown. Protein phosphorylation is the most common post-translational modification fundamental in mediating diverse cellular functions. This review aims at summarizing the current knowledge on regulation of PLP enzymes by phosphorylation. Starting from the paradigmatic PLP-dependent glycogen phosphorylase, the first phosphoprotein discovered, we collect data in literature regarding functional phosphorylation events of eleven PLP enzymes belonging to different fold types and discuss the impact of the modification in affecting their activity and localization as well as the implications on the pathogenesis of diseases in which many of these enzymes are involved. The pivotal question is to correlate the structural consequences of phosphorylation among PLP enzymes of different folds with the functional modifications exerted in terms of activity or conformational changes or others. Although the literature shows that the phosphorylation of PLP enzymes plays important roles in mediating diverse cellular functions, our recapitulation of clue findings in the field makes clear that there is still much to be learnt. Besides mass spectrometry-based proteomic analyses, further biochemical and structural studies on purified native proteins are imperative to fully understand and predict how phosphorylation regulates PLP enzymes and to find the relationship between addition of a phosphate moiety and physiological response.

Web page:

https://doi.org/10.1007/s00726-017-2521-3

Product ID:

100075

Handle IRIS:

11562/972265

Last Modified:

November 15, 2022

Bibliographic citation:

Rossignoli, Giada; Phillips, Robert S; Astegno, Alessandra; Menegazzi, Marta; Voltattorni, Carla Borri; Bertoldi, Mariarita, Phosphorylation of pyridoxal 5'-phosphate enzymes: an intriguing and neglected topic «Amino Acids » , vol. 50 , n. 2 , 2018 , pp. 205-215

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