Isolation and immunobiochemical characterization of a major allergen (65 kDa) from Fusarium equiseti

Verma, J. ; Sridhara, S. ; Rai, D. ; Gangal, S. V. (1998) Isolation and immunobiochemical characterization of a major allergen (65 kDa) from Fusarium equiseti Allergy, 53 (3). pp. 311-315. ISSN 0105-4538

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1398-...

Related URL: http://dx.doi.org/10.1111/j.1398-9995.1998.tb03893.x

Abstract

Fusarium equiseti is one of the most important species in the class Deuteromycetes (Fungi Imperfecti). For proper diagnosis and immunotherapy, isolation and characterization of allergens of F. equiseti are necessary. In the present study, culture filtrate (CF) extract of F. equiseti was resolved into 35-37 bands on isoelectric focusing pi (3-9) and SDS-PAGE (mol. wt. 10-100 kDa). Most of them were glycoproteins, as identified by PAS staining. F. equiseti CF revealed 15 allergenic proteins on immunoblot with an allergic serum pool. It was fractionated into nine fractions (I-IX) on a Superose-12 column by FPLC. Fraction IV (65 kDa) and fraction VI (25 kDa) were found to be highly allergenic by IgE ELISA. A 65-kDa protein was observed as a major allergen because it was recognized by most of the patient sera on immunoblot. After elution from SDS-PAGE gel, it gave two bands of pi 7.4 and 6.0. Inhibition in IgE-binding components of F. equiseti CF with CF extracts of F. soiani and F. moniliforme by immunoprint inhibition assay indicated the allergenicity shared between the extracts of Fusarium species. Data suggested that the 65-kDa is the major allergen in the Fusarium species and can he used for the treatment of allergic patients.

Item Type:Article
Source:Copyright of this article belongs to European Academy of Allergology and Clinical Immunology.
Keywords:Allergens; Characterization; Fusarium equiseti; Immunoprint Inhibition
ID Code:10634
Deposited On:04 Nov 2010 06:29
Last Modified:01 Jun 2011 11:43

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