Cloning, expression, purification, crystallization and preliminary X-ray diffraction analysis of AerF from Microcystis aeruginosa, a putative reductase participating in aeruginosin biosynthesis.

ABSTRACT: The 2-carboxy-6-hydroxyoctahydroindole moiety is an essential residue for the antithrombotic activity of aeruginosins, which are a class of cyanobacteria-derived bioactive linear tetrapeptides. The biosynthetic pathway of the 2-carboxy-6-hydroxyoctahydroindole moiety has not yet been resolved. AerF was indicated to be involved in the biosynthesis of the 2-carboxy-6-hydroxyoctahydroindole moiety. This study reports the cloning, expression, purification, crystallization and preliminary X-ray diffraction analysis of AerF from Microcystis aeruginosa with a C-terminal His6 tag. The crystal diffracted to a maximum resolution of 1.38?Å and belonged to the tetragonal space group P4322, with unit-cell parameters a = b = 101.581, c = 116.094?Å. The calculated Matthews coefficient and solvent content of the crystal were 2.47?Å(3)?Da(-1) and 50.32%, respectively. The initial model of the structure was obtained by the molecular-replacement method and refinement of the structure is in progress.

SUBMITTER: Ding R 

PROVIDER: S-EPMC4388185 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature