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Staphylococcus aureus lipase: purification, kinetic characterization, crystallization and crystallographic study.


ABSTRACT: Staphylococcus aureus lipase (SAL), a triacylglycerol esterase, is an important virulence factor in S. aureus and may be a therapeutic target for infectious diseases caused by S. aureus. For the purposes of anti-SAL drug development using structure-based drug design, X-ray crystallographic analysis of SAL overexpressed in Escherichia coli was performed. The recombinant protein was purified using a three-step protocol involving immobilized metal-affinity chromatography, cation-exchange chromatography and anion-exchange chromatography flowthrough methods, yielding 40?mg of protein per litre of bacterial culture. Crystals were obtained using the sitting-drop vapor-diffusion technique. Diffraction data to 3.0?Å resolution were collected on the BL44XU beamline at SPring-8 at the zinc peak of 1.2842?Å for SAD phasing. The crystals belonged to space group P4122 or P4322, with unit-cell parameters a = 131.0, b = 131.0, c = 250.6?Å, and are likely to contain four SAL molecules (408 residues) per asymmetric unit.

SUBMITTER: Tanaka M 

PROVIDER: S-EPMC6130426 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Staphylococcus aureus lipase: purification, kinetic characterization, crystallization and crystallographic study.

Tanaka Mutsumi M   Kamitani Shigeki S   Kitadokoro Kengo K  

Acta crystallographica. Section F, Structural biology communications 20180903 Pt 9


Staphylococcus aureus lipase (SAL), a triacylglycerol esterase, is an important virulence factor in S. aureus and may be a therapeutic target for infectious diseases caused by S. aureus. For the purposes of anti-SAL drug development using structure-based drug design, X-ray crystallographic analysis of SAL overexpressed in Escherichia coli was performed. The recombinant protein was purified using a three-step protocol involving immobilized metal-affinity chromatography, cation-exchange chromatogr  ...[more]

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