Kluyveromyces marxianus flocculence and growth at high temperature is dependent on the presence of the protein p37

• Tipo: Artigo em Revista Científica Internacional
• Data: 1998

Autores

Moreira, RF (Autor) Outra; Fernandes, PA (Autor) Outra; Moradas Ferreira, P (Autor) ICBAS

Revista

Título: Microbiology

Vol. 144

Páginas: 681-688

ISSN: 1350-0872

Editora: Microbiological Society

Indexação

ISI Web of Knowledge - 11 Citações

Scopus - 14 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Ciências biológicas

Outras Informações

ID Authenticus: P-001-8DC

Abstract (EN): A Kluyveromyces marxianus mutant deficient in p37, a glyceraldehyde-3-phosphate dehydrogenase (GAPDH)-like protein, was obtained and characterized with respect to flocculation behaviour, resistance to temperatures above the optimum for growth, morphology, growth, calcofluor white sensitivity and GAPDH activity. In YPD media, the mutant cells were unable to flocculate and were thermosensitive. However, this thermosensitivity could be overcome by the presence of calcium. Calcofluor white was toxic to the mutant, indicating that the mutation affects cell wall structure. The contribution of p37 to total GAPDH activity was 25% when cells were using glucose as carbon source and 50% when cells were growing in 3% ethanol. These results indicate that p37 is likely to be involved in thermotolerance and flocculation, which can be related to its contribution to cell wall integrity.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8