A methenyl tetrahydromethanopterin cyclohydrolase and a methenyl tetrahydrofolate cyclohydrolase in Methylobacterium extorquens AM1.

@article{Pomper1999AMT,
  title={A methenyl tetrahydromethanopterin cyclohydrolase and a methenyl tetrahydrofolate cyclohydrolase in Methylobacterium extorquens AM1.},
  author={Barbara K Pomper and Julia A. Vorholt and Ludmila Chistoserdova and Mary E. Lidstrom and Rudolf Kurt Thauer},
  journal={European journal of biochemistry},
  year={1999},
  volume={261 2},
  pages={
          475-80
        }
}
Recently it was found that Methylobacterium extorquens AM1 contains both tetrahydromethanopterin (H4MPT) and tetrahydrofolate (H4F) as carriers of C1 units. In this paper we report that the aerobic methylotroph contains a methenyl H4MPT cyclohydrolase (0.9 U x mg-1 cell extract protein) and a methenyl H4F cyclohydrolase (0.23 U x mg-1). Both enzymes, which were specific for their substrates, were purified and characterized and the encoding genes identified via the N-terminal amino acid sequence… CONTINUE READING
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