Galactomannan Sporothrix schenckii

Single unit 3-D-galactofuranosyl side-chains of galactomannan of Sporothrix schenckii, attached (1—>2), (1 - 3), 6r (l—>6) to a-D-mannopyranosyl units. 

Constit. of the galactomannan isol. from Ceratocystis stenoceras tentatively assigned as a constit. of the galactoman-nans of Sporothrix schenckii and Trichophyton interdigitale. 

The preferential synthesis of different polysaccharides by specific morphological types of Sporothrix schenckii has been reported. Thus, yeasts synthesize rhamnomannans containing monorhamnosyl side-chains, conidia or conidia-forming mycelia synthesize rhamnomannans with dirhamnosyl side-chains, and unsporulated mycelia synthesize galactomannans or mannans that are readily excreted into the culture medium. A combination of methylation analysis. Smith degradation, and n.m.r. spectroscopy was used to deduce the structure (25) for the D-mannan core of S. schenckii galactomannan. 

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