A novel Saccharomyces cerevisiae secretory mutant possesses a thermolabile phosphomannose isomerase. 1991

M A Payton, and M Rheinnecker, and L S Klig, and M DeTiani, and E Bowden
Glaxo Institute for Molecular Biology, Geneva, Switzerland.

A temperature-sensitive mutant of Saccharomyces cerevisiae was identified which at the restrictive temperature of 37 degrees C is unable to secrete a number of cell wall-associated proteins and thus resembles previously reported sec mutants. In contrast to other sec mutants, however, both the temperature-sensitive growth and the secretion defects can be repaired by the addition of D-mannose to growth media. We show that the mutant possesses a single, apparently recessive mutation which leads to the production of a thermolabile phosphomannose isomerase.

UI MeSH Term Description Entries
D008358 Mannose A hexose or fermentable monosaccharide and isomer of glucose from manna, the ash Fraxinus ornus and related plants. (From Grant & Hackh's Chemical Dictionary, 5th ed & Random House Unabridged Dictionary, 2d ed) D-Mannose,Mannopyranose,Mannopyranoside,D Mannose
D008359 Mannose-6-Phosphate Isomerase An enzyme that catalyzes the reversible isomerization of D-mannose-6-phosphate to form D-fructose-6-phosphate, an important step in glycolysis. EC 5.3.1.8. Mannosephosphate Isomerase,Phosphomannose Isomerase,Isomerase, Mannose-6-Phosphate,Isomerase, Mannosephosphate,Isomerase, Phosphomannose,Mannose 6 Phosphate Isomerase
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D011489 Protein Denaturation Disruption of the non-covalent bonds and/or disulfide bonds responsible for maintaining the three-dimensional shape and activity of the native protein. Denaturation, Protein,Denaturations, Protein,Protein Denaturations
D006358 Hot Temperature Presence of warmth or heat or a temperature notably higher than an accustomed norm. Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
D012441 Saccharomyces cerevisiae A species of the genus SACCHAROMYCES, family Saccharomycetaceae, order Saccharomycetales, known as "baker's" or "brewer's" yeast. The dried form is used as a dietary supplement. Baker's Yeast,Brewer's Yeast,Candida robusta,S. cerevisiae,Saccharomyces capensis,Saccharomyces italicus,Saccharomyces oviformis,Saccharomyces uvarum var. melibiosus,Yeast, Baker's,Yeast, Brewer's,Baker Yeast,S cerevisiae,Baker's Yeasts,Yeast, Baker

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