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J Bacteriol. Jul 1976; 127(1): 667–670.
PMCID: PMC233101

Uptake of branched-chain alpha-keto acids in Bacillus subtilis.


Bacillus subtilis has a constitutive system for the uptake of alpha-keto-beta-methylvalerate, alpha-ketoisovalerate, and (probably) alpha-ketoisocaproate. A mutation, kauA1, which blocks the uptake of alpha-keto-beta-methylvalerate and alpha-ketoisovalerate, is located between metB and citK on the B. subtilis chromosome.

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Selected References

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  • LOWRY OH, ROSEBROUGH NJ, FARR AL, RANDALL RJ. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed]
  • MEISTER A. Studies on d- and tau-alpha-keto-beta-methylvaleric acids. J Biol Chem. 1951 May;190(1):269–276. [PubMed]
  • Taylor RT, Jenkins WT. Leucine aminotransferase. I. Colorimetric assays. J Biol Chem. 1966 Oct 10;241(19):4391–4395. [PubMed]
  • Ward JB, Jr, Zahler SA. Genetic studies of leucine biosynthesis in Bacillus subtilis. J Bacteriol. 1973 Nov;116(2):719–726. [PMC free article] [PubMed]

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