Abstract
Fatty acid hydroperoxide lyase (HPL) is a membrane protein, member of the lipoxygenase pathway, which holds a central role in plant defense. Green bell pepper fatty acid hydroperoxide lyase, overexpressed in Escherichia coli, was purified and solubilized in two different non ionic detergents, Triton X-100 and dodecyl maltoside (DM). DM is considered to be more useful compared to Triton X-100, as it allows characterization of the protein with spectroscopic techniques, for which Triton X-100 was inapplicable. Circular dichroism demonstrated that HPL's secondary structure in DM consists of 13.53% α-helix, 32.73% β-sheet, 21.76% turn and 31.13% unordered.
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