title: Unusual carbohydrates from the lichen, Parmotrema cetratum.
abstract: The lichen Parmotrema cetratum contains traces of the unusual threitol and unexpected volemitol, along with galactose (2%). Present is a complex containing a lightly branched beta-glucan containing (1-->3) and (1-->4)-linkages in a 25:47 molar ratio chemically linked to a galactomannan with structural features common in other lichens. A glucogalactomannan with a small proportion of Glc rho side chains was also characterized.
authors.affiliation: Departamento de Bioquímica, Universidade Federal do Paraná, Curitiba-PR, Brazil.
authors.forename: M de L
authors.initials: Mde L
authors.lastname: da Silva
authors.forename: P A
authors.initials: PA
authors.lastname: Gorin
authors.forename: M
authors.initials: M
authors.lastname: Iacomini
mesh_terms: D002240:Carbohydrate Sequence; D002241:Carbohydrates / Q000737:chemistry*; D008011:Lichens / Q000737:chemistry*; D008969:Molecular Sequence Data
chemical_list: D002241:Carbohydrates