Abstract
A galactomannan-peptide allergen isolated from the pathogenic fungus Trichophyton mentagrophytes has been shown to contain d-galactose (9%), d-mannose (73%) and protein (9%). A molecular weight of 40 000 was suggested, indicating a basic structure of about 200 mannose units. d-Galactose occurred only in non-reducing terminal positions and in the furanose form. In addition, an equal proportion of d-mannopyranose terminal units was present. Approximately equal numbers of terminal units, chain units and branch points were found, the predominant linkages in the chain being 1 → 2 and 1 → 4, in equal proportions. N-Terminal amino acid assay indicated the presence of at least three major peptide chains ending in threonine, glycine and alanine.
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