A rapid method for the purification of methanol dehydrogenase from Methylobacterium extorquens

Qinfeng Liu, J. R. Kirchhoff, C. R. Faehnle, R. E. Viola, R. A. Hudson

Research output: Contribution to journalArticlepeer-review

Abstract

Methanol dehydrogenase (MDH) is a water soluble quinoprotein that catalyzes the oxidation of methanol as an important carbon source in methylotrophic bacteria . A rapid method for the purification of MDH from Methylobacterium extorquens AM1 was developed using a single cation exchange chromatographic step, followed by ultrafiltration for final purification, enzyme concentration, and buffer exchange. MDH was obtained in an excellent overall yield with a final enzyme purity of greater than 97%. Storage at −80 °C in 20 mM phosphate buffer, pH 7.0, showed only a negligible loss of enzyme activity after six months.

Original languageAmerican English
JournalProtein Expression and Purification
Volume46
DOIs
StatePublished - Aug 11 2005

Disciplines

  • Pharmacy and Pharmaceutical Sciences

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