title: Rabbit photoreceptor outer segments contain high levels of docosapentaenoic acid.
abstract: Docosapentaenoic acid (22:5 omega 6), a minor constituent (less than 4%) of photoreceptor outer segment membranes in all vertebrate species examined to date, comprises 23% of the fatty acids in total lipids from rabbit outer segment membranes. This fatty acid is a significant constituent of each of the three major phospholipid classes in these membranes. The levels of docosahexaenoic acid (22:6 omega 3), the major polyunsaturated fatty acid of most other vertebrate outer segments, was 20%. The sum of 22:5 omega 6 and 22:6 omega 3 in rabbit outer segment membrane lipids is similar to the amount of 22:6 omega 3 usually found in membranes from other vertebrate species.
mesh_terms: D000818:Animals; D002849:Chromatography, Gas; D004586:Electrophoresis; D005231:Fatty Acids, Unsaturated / Q000032:analysis*; D008563:Membrane Lipids / Q000032:analysis; D010743:Phospholipids / Q000032:analysis; D010786:Photoreceptor Cells / Q000032:analysis*; D011817:Rabbits; D012160:Retina / Q000032:analysis; D012374:Rod Cell Outer Segment / Q000032:analysis*; D012967:Sodium Dodecyl Sulfate
chemical_list: D005231:Fatty Acids, Unsaturated; D008563:Membrane Lipids; D010743:Phospholipids; D012967:Sodium Dodecyl Sulfate; C026219:docosapentaenoic acid