Redox potentials of certain vitamins K: implications for a role in sulfite reduction by obligately anaerobic bacteria.

@article{Wagner1974RedoxPO,
  title={Redox potentials of certain vitamins K: implications for a role in sulfite reduction by obligately anaerobic bacteria.},
  author={George W. Wagner and Richard J Kassner and Martin D. Kamen},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={1974},
  volume={71 2},
  pages={253-6}
}
Redox potentials of a menaquinone (MK-6), isolated in earlier researches from two species of the obligately anaerobic genus, Desulfovibrio, as well as two other vitamins K(2)-menaquinones (MK-5) and (MK-9)- have been determined polarographically. The measurements have been validated by determination of redox potentials of 1,4-naphthoquinone and vitamin K(1) which agree with published potentiometric values. E(m7) for menaquinone (MK-6) is -0.067 +/- 0.010 V. Redox potentials calculated for… CONTINUE READING

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