J Virol. 1974 November; 14(5): 1314-1317
Copyright © 1974 American Society for Microbiology. All Rights Reserved.
1 Department of Biological Chemistry, The University of Michigan, Ann Arbor, Michigan 48104
ABSTRACT
The dCTP deaminase induced by Bacillus subtilis bacteriophage PBS2, whose DNA contains uracil instead of thymine, requires metal ion and thiol activators and has a molecular weight of 125,000. The enzyme displays sigmoidal substrate saturation kinetics and inhibition by dUTP, consistent with the deaminase's proposed role of providing balanced levels of dUTP and dCTP for PBS2 uracil-DNA synthesis.
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