Pubblicazioni

Autori:

Perduca, Massimiliano; Destefanis, Laura; Bovi, Michele; Galliano, Monica; Munari, Francesca; Assfalg, Michael; Ferrari, Fabio; Monaco, Hugo L; Capaldi, Stefano

Titolo:

Structure and properties of the oyster mushroom (Pleurotus ostreatus) lectin (POL)

Anno:

2020

Tipologia prodotto:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Lingua:

Inglese

Formato:

Elettronico

Referee:

Sì

Nome rivista:

GLYCOBIOLOGY

ISSN Rivista:

1460-2423

Intervallo pagine:

550-562

Parole chiave:

Pleurotus ostreatus lectin; Carbohydrate-Binding Module (CBM); POL; melibiose; mushroom

Breve descrizione dei contenuti:

Pleurotus ostreatus Lectin (POL) is a 353 amino acid chain lectin that can be purified from the fruiting bodies of the very well-known and widely diffused edible oyster mushrooms (Pleurotus ostreatus). The lectin has been partially characterized by different groups and, although it was crystallized about 20 years ago, its three-dimensional structure and the details of its interactions with carbohydrates are still unknown. This paper reports the three-dimensional structure and ligand-binding properties of POL. We have determined the X-ray structure of the apo-protein purified from the fruiting bodies of the mushroom and that of the recombinant protein in complex with melibiose to a resolution of about 2 Å. The lectin is a homodimer in which the two polypeptide chains are linked by a disulfide bridge. A POL monomer is composed of two highly homologous β-jellyroll domains each of which containing a calcium-dependent carbohydrate binding site. A high degree of sequence similarity is observed between the two carbohydrate binding modules present in each monomer. The structure of the lectin in complex with melibiose reveals that a POL dimer has four calcium dependent carbohydrate-binding sites. The interaction with sugars in solution has been characterized by ITC and Saturation transfer difference (STD) NMR and it sheds new light on the molecular determinants of POL specificity. The lectin exhibits in vitro antiproliferative effects against human cancer cell lines and presents structural similarity with the prototype member of the CBM67 family, the non-catalytic domain of Streptomyces avermitilis α-Rhamnosidase.

Id prodotto:

112152

Handle IRIS:

11562/1010234

ultima modifica:

15 novembre 2022

Citazione bibliografica:

Perduca, Massimiliano; Destefanis, Laura; Bovi, Michele; Galliano, Monica; Munari, Francesca; Assfalg, Michael; Ferrari, Fabio; Monaco, Hugo L; Capaldi, Stefano, Structure and properties of the oyster mushroom (Pleurotus ostreatus) lectin (POL) «GLYCOBIOLOGY» , 2020 , pp. 550-562

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