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Purification and characterization of the Clostridium josui porphobilinogen deaminase encoded by the hemC gene from a recombinant Escherichia coli.

The porphobilinogen deaminase encoded by the Clostridium josui hemC gene was purified from a recombinant Escherichia coli strain and its properties were characterized. The optimal temperature and pH of the purified enzyme were 65 degrees C and 7.0, respectively. This enzyme was quite thermostable: it retained 86% of the original activity after incubation at 70 degrees C for 1 h. The Km and Vmax values of the enzyme were 65 microM and 3.3 micromol/h/mg for porphobilinogen, respectively.[1]

References

  1. Purification and characterization of the Clostridium josui porphobilinogen deaminase encoded by the hemC gene from a recombinant Escherichia coli. Fujino, E., Fujino, T., Karita, S., Kimura, T., Sakka, K., Ohmiya, K. J. Biosci. Bioeng. (1999) [Pubmed]
 
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