Abstract
During the early stages of sporulation in Saccharomyces cerevisiae , the p H of the acetate sporulation medium rises to values of 8.0 or higher. Associated with this rise in p H is a reduced cell permeability to certain precursors of ribonucleic acid (RNA), deoxyribonucleic acid or protein. Uptake of adenine, alanine, and leucine was optimal at p H 5.6 to 6.0, but sporulation was inhibited when the sporulation medium was buffered below p H 7.0. Cellular impermeability can be largely overcome by adjusting the acetate sporulation medium to p H 6.0 for optimal uptake of 14 C-adenine during short pulses without any apparent effect on sporulation. Sporulating cells pulse-labeled 20 min at p H 6.0 incorporated 40 times more 14 C-adenine into RNA than sporulating cells pulse-labeled at p H 8.0. This increased incorporation can be attributed to a 100-fold increase in labeled adenosine triphosphate in cells pulse-labeled at p H 6.0 where maximum uptake occurs.
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Dates
Type | When |
---|---|
Created | 5 years, 8 months ago (Jan. 3, 2020, 9:38 a.m.) |
Deposited | 4 years, 2 months ago (June 13, 2021, 1:35 a.m.) |
Indexed | 1 year, 9 months ago (Nov. 23, 2023, 1:57 p.m.) |
Issued | 52 years, 11 months ago (Oct. 1, 1972) |
Published | 52 years, 11 months ago (Oct. 1, 1972) |
Published Print | 52 years, 11 months ago (Oct. 1, 1972) |
@article{Mills_1972, title={Effect of p H on Adenine and Amino Acid Uptake During Sporulation in Saccharomyces cerevisiae}, volume={112}, ISSN={1098-5530}, url={http://dx.doi.org/10.1128/jb.112.1.519-526.1972}, DOI={10.1128/jb.112.1.519-526.1972}, number={1}, journal={Journal of Bacteriology}, publisher={American Society for Microbiology}, author={Mills, Dallice}, year={1972}, month=oct, pages={519–526} }