Molecular and General Genetics MGG

, Volume 242, Issue 2, pp 163–168 | Cite as

Cloning, sequencing and expression of the gene encoding 2-phosphoglycerate kinase from Methanothermus fervidus

  • Anselm Lehmacher
  • Reinhard Hensel
Original Articles


The gene encoding 2-phosphoglycerate kinase (2PGK), which catalyses the first step in the biosynthesis of cyclic 2,3-diphosphoglycerate in methanogens, was cloned and sequenced from the hyperthermophilic Methanothermus fervidus. The 2pgk gene codes for 304 amino acids, corresponding to a relative molecular mass of 35040. The 2pgk mRNA was estimated to be 1600 nucleotides in size. Putative transcription signals and the ribosome-binding site of 2pgk are discussed. Production of 2PGK from M. fervidus in Es-cherichia coli reveals the same apparent molecular weights for the native enzyme and its denatured subunit as those shown by the 2PGK purified from M. fervidus. Also the kinetic parameters of 2PKG produced in E. coli correspond well with those from the enzyme isolated from the natural host M. fervidus.

Key words

Cyclic 2,3-diphosphoglycerate 2-phosphoglycerate kinase Methanogen 


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Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • Anselm Lehmacher
    • 1
  • Reinhard Hensel
    • 1
  1. 1.Max-Planck-Institut für Biochemie, Am KlopferspitzMartinsriedGermany

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