title: Cloning and characterization of a Neurospora crassa gene required for (1,3) beta-glucan synthase activity and cell wall formation.
abstract: The glucan synthase 1 gene (gs-1) is required for (1,3) beta-glucan synthase activity [E.C. 2.4.1.34; UDP glucose:1,3-beta-D-glucan 3-beta-D-glucosyltransferase] and for cell wall formation. The gs-1 gene was cloned by functional complementation of the cell-wall-less defect of the (1,3) beta-glucan synthase-deficient mutant, TM1, by using a genomic Neurospora crassa cosmid library. A 2568-nucleotide gs-1 cDNA sequence revealed a 532-amino acid open reading frame encoding a polypeptide of 59 kDa. The predicted gs-1 gene product has no obvious signal peptide cleavage sites or transmembrane domains. A gs-1 null mutant is defective for cell wall formation and (1,3) beta-glucan synthase activity. The predicted GS-1 protein is weakly homologous to a putative Saccharomyces cerevisiae transcriptional regulatory protein.
authors.affiliation: Department of Cellular and Structural Biology, University of Colorado Health Sciences Center, Denver 80262.
authors.forename: C S
authors.initials: CS
authors.lastname: Enderlin
authors.forename: C P
authors.initials: CP
authors.lastname: Selitrennikoff
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D002473:Cell Wall / Q000235:genetics; D003001:Cloning, Molecular; D004271:DNA, Fungal / Q000737:chemistry; D005800:Genes, Fungal; D005964:Glucosyltransferases / Q000096:biosynthesis*; D008565:Membrane Proteins; D008969:Molecular Sequence Data; D009492:Neurospora crassa / Q000201:enzymology / Q000235:genetics*; D015183:Restriction Mapping; D012441:Saccharomyces cerevisiae / Q000235:genetics; D029702:Schizosaccharomyces pombe Proteins; D017386:Sequence Homology, Amino Acid
chemical_list: D004271:DNA, Fungal; D008565:Membrane Proteins; D029702:Schizosaccharomyces pombe Proteins; D005964:Glucosyltransferases; C020570:1,3-beta-glucan synthase