Crystal structure of fuculose aldolase from the Antarctic psychrophilic yeast Glaciozyma antarctica PI12

Nardiah Rizwana Jaafar, Dene Littler, Travis Beddoe, Jamie Rossjohn, Rosli Md Illias, Nor Muhammad Mahadi, Mukram Mohamed Mackeen, Abdul Munir Abdul Murad, Farah Diba Abu Bakar

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3 Citations (Scopus)

Abstract

Fuculose-1-phosphate aldolase (FucA) catalyses the reversible cleavage of L-fuculose 1-phosphate to dihydroxyacetone phosphate (DHAP) and L-lactaldehyde. This enzyme from mesophiles and thermophiles has been extensively studied; however, there is no report on this enzyme from a psychrophile. In this study, the gene encoding FucA from Glaciozyma antarctica PI12 (GaFucA) was cloned and the enzyme was overexpressed in Escherichia coli, purified and crystallized. The tetrameric structure of GaFucA was determined to 1.34 Å resolution. The overall architecture of GaFucA and its catalytically essential histidine triad are highly conserved among other fuculose aldolases. Comparisons of structural features between GaFucA and its mesophilic and thermophilic homologues revealed that the enzyme has typical psychrophilic attributes, indicated by the presence of a high number of nonpolar residues at the surface and a lower number of arginine residues.

Original languageEnglish
Pages (from-to)831-839
Number of pages9
JournalActa Crystallographica. Section F: Structural Biology Communications
VolumeF72
Issue number11
DOIs
Publication statusPublished - Nov 2016

Keywords

  • crystallization
  • fuculose aldolase
  • Glaciozyma antarctica
  • imino cyclitols
  • l-fuculose metabolism
  • metalloenzymes
  • psychrophiles

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