Affiliation:
1. Laboratory of Applied Biochemistry, University of Nancy I, 54506 Vandoeuvre-les-Nancy, Cedex France
Abstract
The transport of branched-chain amino acids in
Streptococcus thermophilus
was energy dependent. The metabolic inhibitors of glycolysis and ATPase enzymes were active, but the proton-conducting uncouplers were not. Transport was optimal at temperatures of between 30 and 45°C and at pH 7.0 for the three amino acids leucine, valine, and isoleucine; a second peak existed at pH 5.0 with valine and isoleucine. By competition and kinetics studies, the branched-chain amino acids were found to share at least a common transport system.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
Reference23 articles.
1. Anraku Y. 1978. Transport of amino acids p. 171-219. In B. P. Rosen (ed.) Bacterial transport. Marcel Dekker Inc. New York.
2. Accumulation of neutral amino acids by Streptococcusfaecalis;Ashgar S. S.;J. Biol. Chem.,1973
3. Different mechanisms of energy coupling for the active transport of proline and glutamine in Escherichia coli;Berger E. A.;Proc. Nati. Acad. Sci. U.S.A.,1973
4. Booth I. R. and W. A. Hamilton. 1980. Energetics of bacterial amino acid transport p. 171-207. In J. W. Payne (ed.) Microorganisms and nitrogen sources. John Wiley & Sons Inc. New York.
5. Effet des acides amines sur la croissance de Streptococcus thermophilus;Bracquart P.;Milchwissenschaft,1977
Cited by
18 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献