What question did this study set out to answer?

This research aims to clarify how FLAP activates 5-lipoxygenase (5-LO) through binding mechanisms.

March 8, 1993FEBS LettersOpen Access

5‐lipoxygenase‐activating protein is an arachidonate binding protein

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Research demonstrates how FLAP interacts with arachidonic acid, indicating a role in leukotriene synthesis.

This research aims to clarify how FLAP activates 5-lipoxygenase (5-LO) through binding mechanisms.
FLAP was expressed in Spodoptera frugiperda (Sf9) cells through recombinant baculovirus infection.
Binding assays were conducted using [125I]L-739,059 as a photoaffinity analog of arachidonic acid.
Inhibition studies with arachidonic acid and MK-886 were performed to assess binding specificity.
FLAP specifically binds to [125I]L-739,059, indicating a relationship with arachidonic acid.
Binding was inhibited by arachidonic acid and MK-886, showing competitive inhibition with the LT biosynthesis inhibitor.
The findings suggest that FLAP activates 5-LO by binding and transferring arachidonic acid to the enzyme.

Mancini et al. (1993) studied this question.

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