第五章脂类代谢 脂类的作用: 储藏物质 结构物质
第五章 脂类代 谢 脂类的作用: 储藏物质 结构物质
Stored Metabolic Fuel in a 70-kg Person Energy (kJ/g dry Dry Weight Available Energy Constituent weight) (g) k Fat (adipose tissue) 37 15,000 555,000 Protein(muscle) 17 6,000 102,000 Glycogen (muscle) 16 120 1,920 Glycogen (liver) 16 70 1,120 Glucose (extracellular fluid) 16 20 320 Total 660.360 Scanning electron micrograph of an adipose cell (fat cell)
Scanning electron micrograph of an adipose cell (fat cell)
C20C0-R1 H-C-0CO-R2 CH20CO-R3 甘油三酰
甘油三酰
Hydrophilic Hydrophobic RRRRRRRP Stearate ion OCCH.CH.CH.CH.CH.CHCH.CHCHCHCHCHCHCHCH.CHC 0 Polar head Hydrocarbon tail group Stearate ion
22 HH CCH CH,CH CHCH,CHCH.C=CCH CH2CH2CH2CH2CH2CH2CH3 Oleate ion (c)Formulas
请注意脂肪酸的名字: 饱和脂肪酸: 不饱和脂肪酸: 豆蔻酸(14C) 棕榈油酸(16C) 软脂酸(16C》 油酸(18C,1) (棕榈酸) 硬脂酸(18C) 亚油酸(18C,2)
请注意脂肪酸的名字: 饱和脂肪酸: 不饱和脂肪酸: 豆蔻酸(14C) 棕榈油酸(16C) 软脂酸(16C) 油酸(18C, 1) (棕榈酸) 硬脂酸(18C) 亚油酸(18C,2)
CH,-0-0 0 R3-0-P-0-CH 0 磷脂的结构
磷脂的结构
Increasing cholesterol enrichment
Carbohydrate side chain of glycolipid Phospholipid bilayer Glycoprotein Hydrophobic Carbohydrate side region chains of glycoproteins Hydrophilic region Plasma membrane Integral membrane protein Peripheral membrane protein Nucleus Cytoplasm
2 Lipids Glycerol Fatty acids Steroids Glyceraldehyde 3-phosphate 8 B-oxidation Acetyl-CoA 脂代谢料祝 Fatty acid synthesis Reduced 2 lectron carriers (NADH.FADH2 NADPH!