Title : Relationship between UDP-galactose 4'-epimerase activity and galactose sensitivity in yeast.

Pub. Date : 2006 Mar 31

PMID : 16452467






10 Functional Relationships(s)
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Compound Name
Protein Name
Organism
1 UDP-galactose 4"-epimerase (GALE) catalyzes the final step of the highly conserved Leloir pathway of galactose metabolism. Galactose UDP-galactose-4-epimerase Homo sapiens
2 Loss of GALE in yeast results in galactose-dependent growth arrest. Galactose UDP-galactose-4-epimerase Homo sapiens
3 Although the role of GALE in galactose metabolism has been recognized for decades, the precise relationship between GALE activity and galactose sensitivity has remained unclear. Galactose UDP-galactose-4-epimerase Homo sapiens
4 1) Is GALE rate-limiting for galactose metabolism in yeast? Galactose UDP-galactose-4-epimerase Homo sapiens
5 2) What is the relationship between GALE activity and galactose-dependent growth arrest in yeast? Galactose UDP-galactose-4-epimerase Homo sapiens
6 3) What is the relationship between GALE activity and the abnormal accumulation of galactose metabolites in yeast? Galactose UDP-galactose-4-epimerase Homo sapiens
7 Our results demonstrated a smooth linear relationship between galactose metabolism and GALE activity over a range from 0 to approximately 5% but a steep threshold relationship between growth rate in galactose and GALE activity over the same range. Galactose UDP-galactose-4-epimerase Homo sapiens
8 Our results demonstrated a smooth linear relationship between galactose metabolism and GALE activity over a range from 0 to approximately 5% but a steep threshold relationship between growth rate in galactose and GALE activity over the same range. Galactose UDP-galactose-4-epimerase Homo sapiens
9 The relationship between abnormal accumulation of metabolites and GALE activity was also linear over the range from 0 to approximately 5%, suggesting that if the abnormal accumulation of metabolites underlies galactose-dependent growth-arrest in GALE-impaired yeast, either the impact of individual metabolites must be synergistic and/or the threshold of sensitivity must be very steep. Galactose UDP-galactose-4-epimerase Homo sapiens
10 The relationship between abnormal accumulation of metabolites and GALE activity was also linear over the range from 0 to approximately 5%, suggesting that if the abnormal accumulation of metabolites underlies galactose-dependent growth-arrest in GALE-impaired yeast, either the impact of individual metabolites must be synergistic and/or the threshold of sensitivity must be very steep. Galactose UDP-galactose-4-epimerase Homo sapiens