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International Journal of Medicinal Mushrooms
インパクトファクター: 1.423 5年インパクトファクター: 1.525 SJR: 0.431 SNIP: 0.716 CiteScore™: 2.6

ISSN 印刷: 1521-9437
ISSN オンライン: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v17.i5.20
pages 427-434

Isolation and Characterization of Lectins Formed by Cerrena unicolor (Higher Basidiomycetes) in Solid-State Fermentation of Sorghum and Wheat Straw

Elene Davitashvili
Faculty of Natural Science, Iv. Javakhishvili State University, Tbilisi, Georgia
Ekaterine Kapanadze
Faculty of Exact and Natural Sciences, Department of Biology, I. Javakhishvili Tbilisi State University, 0143 Tbilisi, Georgia
Eva Kachlishvili
The Agricultural University of Georgia, University Campus at Digomi, Tbilisi, Georgia
Nona A. Mikiashvili
Institute of Evolution, University of Haifa, Israel; Iv. Javakhishvili State University of Tbilisi, Department of Biochemistry and Biotechnology, Georgia; Mushroom Biology & Fungal Biotechnology Laboratory, North Carolina A&T State University, USA
Vladimir I. Elisashvili
Animal Husbandry and Feed Production Institute of Agricultural University of Georgia, 240 David Agmashenebeli alley, 0159 Tbilisi, Georgia

要約

The capability of Cerrena unicolor to produce fruiting bodies and lectins was studied in solid-state fermentation of a sorghum and wheat straw mixture. The first primordia appeared on day 48 and reached 6−10 mm; however, no formation of fruiting bodies occurred and these rudiments were harvested on day 55. The protein content in the rudiment extracts was significantly higher, whereas the specific hemagglutinating activity (HA) was sixfold lower as compared with those in extracts from mycelial biomass. Moreover, the specific HA of the 80-day mycelium increased to 16,667 U/mg, exceeding by sixfold that of 55-day-old mycelium. Four protein fractions (160, 105, 67, and 8 kDa) were detected by gel-chromatography of mycelial biomass crude extract; the highest specific HA was revealed in fraction III (26336 U HA/mg). Among sugars tested, galactose was the most potent inhibitor of HA of all protein fractions, with minimal inhibition concentrations of 0.095−0.780 mM. The galactose-specific lectins isolated from the fractions II and III by affinity chromatography ranged from 15 to 116 kDa and differed with kinetic parameters.


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