Title : Role of Gln79 in Feedback Inhibition of the Yeast γ-Glutamyl Kinase by Proline.

Pub. Date : 2021 Sep 7

PMID : 34576795






6 Functional Relationships(s)
Download
Sentence
Compound Name
Protein Name
Organism
1 Here, we isolated a yeast mutant with high levels of intracellular proline and found a missense mutation (Gln79His) on the PRO1 gene encoding the gamma-glutamyl kinase Pro1, a limiting enzyme in proline biosynthesis. Proline glutamate 5-kinase Saccharomyces cerevisiae S288C
2 Here, we isolated a yeast mutant with high levels of intracellular proline and found a missense mutation (Gln79His) on the PRO1 gene encoding the gamma-glutamyl kinase Pro1, a limiting enzyme in proline biosynthesis. Proline glutamate 5-kinase Saccharomyces cerevisiae S288C
3 Here, we isolated a yeast mutant with high levels of intracellular proline and found a missense mutation (Gln79His) on the PRO1 gene encoding the gamma-glutamyl kinase Pro1, a limiting enzyme in proline biosynthesis. Proline glutamate 5-kinase Saccharomyces cerevisiae S288C
4 The amino acid change of Gln79 to His in Pro1 resulted in desensitization to the proline-mediated feedback inhibition of GK activity, leading to the accumulation of proline in cells. Proline glutamate 5-kinase Saccharomyces cerevisiae S288C
5 The amino acid change of Gln79 to His in Pro1 resulted in desensitization to the proline-mediated feedback inhibition of GK activity, leading to the accumulation of proline in cells. Proline glutamate 5-kinase Saccharomyces cerevisiae S288C
6 Biochemical and in silico analyses showed that the amino acid residue at position 79 is involved in the stabilization of the proline binding pocket in Pro1 via a hydrogen-bonding network, which plays an important role in feedback inhibition. Proline glutamate 5-kinase Saccharomyces cerevisiae S288C