Biochemical Investigation of 3-Sulfopropionaldehyde Reductase HpfD

Junwei An, Yifeng Wei, Jiayi Liu, Ee Lui Ang, Huimin Zhao, Yan Zhang

Research output: Contribution to journalArticlepeer-review


Sulfoquinovose is the polar headgroup of plant sulfolipids and is a globally abundant organosulfur compound, and its degradation by bacteria is an important component of the sulfur cycle. Sulfoquinovose degradation by certain bacteria, including Escherichia coli, produces dihydroxypropanesulfonate (DHPS), which is further converted by anaerobic bacteria into 3-hydroxypropanesulfonate (3-HPS), through the catalytic action of DHPS dehydratase (a member of the glycyl radical enzyme family), and sulfopropionaldehyde reductase HpfD (a member of the metal-dependent alcohol dehydrogenase family). Here we report biochemical investigation of Hungatella hathewayi HpfD. In addition to 3-HPS, HpfD also displayed high catalytic activities for NAD+-dependent oxidation of 4-hydroxybutanesulfonate (4-HBS) and γ-hydroxybutyrate (GHB). The highest activity was obtained with Fe2+ or Mn2+ as the divalent metal cofactor. Bioinformatics studies suggest that, in addition to DHPS degradation, 3-HPS and γ-aminobutyrate (GABA) degradations also involve HpfD homologs.

Original languageEnglish (US)
Pages (from-to)2862-2866
Number of pages5
Issue number19
StatePublished - Oct 1 2021


  • alcohol dehydrogenase
  • hydroxybutyrate
  • sulfoglycolysis
  • sulfonate
  • sulfoquinovose

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Organic Chemistry


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