|LOX-DB - LipOXygenases DataBase|
LOX-DB - Literature
Requirement of a 5-lipoxygenase-activating protein for leukotriene synthesis.
Dixon R.A., Diehl R.E., Opas E., Rands E., Vickers P.J., Evans J.F., Gillard J.W., Miller D.K.Nature 343: 282-284 (1990)
Leukotrienes, the biologically active metabolites of arachidonic acid, have been implicated in a variety of inflammatory responses, including asthma, arthritis and psoriasis. Recently a compound, MK-886, has been described that blocks the synthesis of leukotrienes in intact activated leukocytes, but has little or no effect on enzymes involved in leukotriene synthesis, including 5-lipoxygenase, in cell-free systems. A membrane protein with a high affinity for MK-886 and possibly representing the cellular target for MK-886 has been isolated from rat and human leukocytes. Here, we report the isolation of a complementary DNA clone encoding the MK-886-binding protein. We also demonstrate that the expression of both the MK-886-binding protein and 5-lipoxygenase is necessary for leukotriene synthesis in intact cells. Because the MK-886-binding protein seems to play a part in activating this enzyme in cells, it is termed the five-lipoxygenase activating protein (FLAP).
flap-human - flap-rat