Characterization of Cytotoxic Lactose Binding Lectin from Sulphur Polypore, Laetiporus sulphureus (Agaricomycetes), from Algeria

Toumi, Mohammed Esseddik; Perduca, Massimiliano; Necib, Youcef; Kebaili, Fethi Farouk; Toumi, Mouad; Torche, Imene; Gaglio, Salvatore; Rebai, Redouane; Lauriola, Angela; Ayadi, Malik; Smaali, Mohammed Elamine

doi:10.1615/intjmedmushrooms.2021040303

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2024

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Mycochemistry: Natural products obtained from spent mushroom substrates in the control of agricultural pests and diseases

Soares,

Silva,

Souza

et al. 2024

Studies in Natural Products Chemistry

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Mycochemistry: Natural products obtained from spent mushroom substrates in the control of agricultural pests and diseases

Soares,

Silva,

Souza

et al. 2024

Studies in Natural Products Chemistry

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Purification and Biochemical Characterization of Novel Galectin from the Black Poplar Medicinal Mushroom Cyclocybe cylindracea (Agaricomycetes) Strain MEST42 from Algeria

Toumi,

Kebaili,

Rebai

et al. 2024

Int J Med Mushrooms

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In the present study, a new galectin designated Cyclocybe cylindracea lectin (CCL) was extracted from the fruiting bodies of the wild black popular mushroom C. cylindracea grown in Algeria. The protein was isolated using sepharose 4B as affinity chromatography matrix, and galactose as elutant. The purified galectin was composed of two subunits of 17.873 kDa each, with a total molecular mass of 35.6 kDa. Its agglutinant activity was impeded by galactose and its derivatives, as well as melibiose. Lactose showed the highest affinity, with a minimal inhibitory concentration of 0.0781 mM. CCL was sensitive to extreme pH conditions, and its binding function decreased when incubated with 10 mM EDTA, and it could be restored by metallic cations such as Ca2+, Mg2+, and Zn2+. CCL agglutinated human red blood cells, without any discernible specificity. Circular dichroism spectra demonstrated that its secondary structure contained &deta;-sheet as dominant fold. In addition, bioinformatics investigation on their peptide fingerprint obtained after MALDI-TOF/TOF ionization using mascot software confirmed that CCL was not like any previous purified lectin from mushroom: instead, it possessed an amino acid composition with high similarity to that of the putative urea carboxylase of Emericella nidulans (strain FGSC A4/ATCC 38163/CBS 112.46/NRRL 194/M139) with 44% of similarity score.

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Characterization of Cytotoxic Lactose Binding Lectin from Sulphur Polypore, Laetiporus sulphureus (Agaricomycetes), from Algeria

Cited by 2 publications

References 0 publications

Mycochemistry: Natural products obtained from spent mushroom substrates in the control of agricultural pests and diseases

Mycochemistry: Natural products obtained from spent mushroom substrates in the control of agricultural pests and diseases

Purification and Biochemical Characterization of Novel Galectin from the Black Poplar Medicinal Mushroom Cyclocybe cylindracea (Agaricomycetes) Strain MEST42 from Algeria

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