Biochemistry (Moscow)

, 73:1154 | Cite as

Isolation and characterization of Lentinus edodes (Berk.) singer extracellular lectins

  • O. M. TsivilevaEmail author
  • V. E. Nikitina
  • E. A. Loshchinina


Lectin preparations have been isolated and purified from the culture liquid of the xylotrophic basidiomycete Lentinus edodes (Berk.) Singer [Lentinula edodes (Berk.) Pegler]. The culture of L. edodes F-249 synthesizes two extracellular lectins different in composition and physicochemical properties. Extracellular lectin L1 from L. edodes is a glycoprotein of mono-subunit structure with molecular weight of 43 kD. L1 is comprised of 10.5 ± 1.0% (w/w) carbohydrates represented by glucose (Glc). Extracellular lectin L2 is a proteoglycan of mono-subunit structure with molecular weight of 37 kD. L2 is comprised of 90.3 ± 1.0% (w/w) carbohydrates represented by Glc (73% of the total mass of the carbohydrate moiety of the lectin molecule) and galactose (Gal) (27% of the total mass of the carbohydrate part of the lectin molecule). The content of Asn in L2 is high, i.e. 42% (w/w) of total amino acids. This fact along with the composition of the carbohydrate part of the molecule (Glc + Gal) allows one to assign L2 to N-asparagine-bound proteins. Both lectins are specific to D-Gal and lactose (Lac) at an equal for L1 and L2 minimal inhibiting concentration of these carbohydrates (2.08 mM Gal and 8.33 mM Lac). Other carbohydrates to which the lectins show affinity are different for the two lectins: Rha (4.16 mM) for L1 and Ara (4.16 mM) and mannitol (8.33 mM) for L2. The purified extracellular lectins of L. edodes are highly selective at recognition of definite structures on the surface of trypsinized rabbit erythrocytes and do not react with the erythrocytes of other animals and humans.

Key words

Lentinus edodes lectins of higher fungi extracellular glycoproteins protein isolation and purification 



amino acid


culture liquid




native erythrocytes


trypsinized erythrocytes


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Copyright information

© MAIK Nauka 2008

Authors and Affiliations

  • O. M. Tsivileva
    • 1
    Email author
  • V. E. Nikitina
    • 1
  • E. A. Loshchinina
    • 1
  1. 1.Institute of Biochemistry and Physiology of Plants and MicroorganismsRussian Academy of SciencesSaratovRussia

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