Pterin deaminase from Bacillus megaterium. Purification and properties.

  title={Pterin deaminase from Bacillus megaterium. Purification and properties.},
  author={Shugo Takikawa and C Kitayama-Yokokawa and M. Tsusue},
  journal={Journal of biochemistry},
  volume={85 3},
A pterin deaminase catalyzing the hydrolytic deamination of various pteridines was found in the bacterium, Bacillus megaterium, and partially purified from bacterial extract. The specific activity was raised 90-fold over that of the crude extract. The pH optimum is around 7.3, and the Km value for 6-carboxypterin is 1.3 mM. The molecular weight of the enzyme was estimated by gel filtration to be about 110,000. The enzyme deaminated pterin, 6-carboxypterin, biopterin, 6-methylpterin, 7… CONTINUE READING
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