کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1948618 1054703 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Linoleoyl lysophosphatidic acid and linoleoyl lysophosphatidylcholine are efficient substrates for mammalian lipoxygenases
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Linoleoyl lysophosphatidic acid and linoleoyl lysophosphatidylcholine are efficient substrates for mammalian lipoxygenases
چکیده انگلیسی

Oxygenation of two lysophospholipids, 1-linoleoyl lysophosphatidylcholine (linoleoyl-lysoPC) and 1-linoleoyl lysophosphatidic acid (linoleoyl-lysoPA), by reticulocyte lipoxygenase (LOX) or porcine leukocyte LOX was measured by monitoring the formation of conjugated dienes. Consistent with the above, the formation of linoleoyl-lysophospholipid hydroperoxide as oxygenation product was confirmed by LC/MS analyses. In further study, the oxygenation products of linoleoyl-lysoPC or linoleoyl-lysoPA were found to contain hydroperoxide group predominantly at C-13 with the S enantiomer as a major one, in a good agreement with the positional-specificity and stereo-selectivity of reticulocyte LOX or leukocyte LOX in oxygenation of linoleic acid. The kinetic study indicates that linoleoyl-lysoPA and linoleoyl-lysoPC are no less efficient than linoleic acid as substrates of reticulocyte LOX as well as leukocyte LOX. In contrast, these lysophospholipids were not oxygenated efficiently by potato LOX. Thus, linoleoyl-lysophospholipids such as linoleoyl-lysoPA or linoleoyl-lysoPC could be utilized as efficient substrates for some mammalian lipoxygenases.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimica et Biophysica Acta (BBA) - General Subjects - Volume 1770, Issue 7, July 2007, Pages 1062–1070
نویسندگان
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