Transcription of LIPIDS: Saturated & Unsaturated Fatty Acids
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LIPIDS: Saturated & Unsaturated Fatty Acids
lipids : Saturated & Unsaturated Fatty Acids (Part-2)Dr. AditiPGDepartmentofZoologyMagadh University, Bodh GayaSubject: Biochemistry, Semester I22ndApril 2020 Overhalfofthefattyacidresiduesofplantand animallipidsareunsaturated(containdouble bonds)andareoftenpolyunsaturated(contain twoormoredoublebonds). Bacterialfattyacidsarerarelypolyunsatura tedbutarecommonlybranched,hydroxylated,o rcontaincyclopropanerings. 9-or9-doublebond. InpolyunsaturatedfattyacidsorPUFA,thedou blebondstendtooccurateverythirdcarbonato m( , CH=CH CH2 CH=CH )andsoarenotconjugated(asin CH=CH CH=CH ). Twoimportantclassesofpolyunsaturatedfatt yacidsaredesignatedas 3or 6fattyacids,anomenclaturethatidentifiest helastdouble-bondedcarbonatomascountedfr omthemethylterminal( )endofthechain. -Linolenicacidandlinoleicacid( ) Fatty AcidsSaturated Fatty Acids Saturated Fatty Acids (which are fully reduced or Saturated with hydrogen) are highly flexible molecules that can assume a wide range of conformations because there is relatively free rotation around each of their C C bonds.
Triacylglycerols (TAGs) are Major Storage Lipids • The fats and oils that occur in plants and animals consist largely of mixtures of triacylglycerols (also called triglycerides). • TAGs are nonpolar, water-insoluble substances, contain three esterified fatty …
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