Functional analysis of yeast gene families involved in metabolism of vitamins B1 and B6

Autor: Susana, Rodríguez-Navarro, Bertrand, Llorente, María Teresa, Rodríguez-Manzaneque, Anna, Ramne, Genoveva, Uber, Denis, Marchesan, Bernard, Dujon, Enrique, Herrero, Per, Sunnerhagen, José E, Pérez-Ortín
Rok vydání: 2002
Předmět:
Zdroj: Yeast (Chichester, England). 19(14)
ISSN: 0749-503X
Popis: In order to clarify their physiological functions, we have undertaken a characterization of the three-membered gene families SNZ1-3 and SNO1-3. In media lacking vitamin B(6), SNZ1 and SNO1 were both required for growth in certain conditions, but neither SNZ2, SNZ3, SNO2 nor SNO3 were required. Copies 2 and 3 of the gene products have, in spite of their extremely close sequence similarity, slightly different functions in the cell. We have also found that copies 2 and 3 are activated by the lack of thiamine and that the Snz proteins physically interact with the thiamine biosynthesis Thi5 protein family. Whereas copy 1 is required for conditions in which B(6) is essential for growth, copies 2 and 3 seem more related with B(1) biosynthesis during the exponential phase.
Databáze: OpenAIRE