Lipids - siumed.edu

Lipids - siumed.edu

Lipids Storage (neutral) Membrane (polar) PL TAG GL GPL SL SL O H2 C HC OC O (CH 2) 14CH 3 OC O (CH 2) 7CH=CH(CH 2)7 CH3 H2 C OC (CH 2) 16CH 3 G FA FA P HO A CH CH=CH(CH 2)12CH 3 HC N H H2 C FA P C S FA MS/OS Eric Niederhoffer SIU-SOM Glycerophospholipids O O H2 C G3P HC O O

General Structure O C(CH2) 14CH3 O H2 C C(CH2) 7CH=CH(CH 2) 7CH3 O HC C(CH2) 14CH3 O O C(CH2) 7CH=CH(CH 2) 7CH3 O O P Net Charge pH 7 = -1 H2 C H2 C O P O X OO O H2 C HC PA O O Net Charge pH 7 = 0 C(CH2) 7CH=CH(CH 2) 7CH3 O H2 C O H2 C HC O H - O PC C(CH2) 14CH3 O O PI45BP Net Charge pH 7 = -4

C(CH2) 14CH3 O C(CH2) 7CH=CH(CH 2) 7CH3 O H OPO3 2- H2 C O P O O - CH2 CH2 N(CH3) 2 O P O H HO O- OH H OH OPO3 2- H H H Sphingolipids CH=CH(CH 2)12CH 3 HO S CH HC O N H C(CH2) 22CH3 O X CH=CH(CH 2)12CH 3 HO CH HC H2 C O N H C(CH2) 22CH3 O H O N

H C(CH2) 22CH3 H2 C HC Glc GlcCb (neutral GL) O N H C(CH2) 22CH3 O PO3 CH2 CH2 N(CH3)2 H2 C CH HC O N H C(CH2) 22CH3 PC Sm CH=CH(CH 2)12CH 3 HO H2 C O CH Cer CH=CH(CH 2)12CH 3 CH HC HO H2 C General Structure HO CH=CH(CH 2)12CH 3 CH=CH(CH 2)12CH 3 HO CH HC O N H C(CH2) 22CH3 GalNAc H2 C O Glc-Gal

LacCer (Gb) O Glc Gal Neu5Ac Gan (i.e., blood groups) Phospholipases PLA1 O O H2 C DAG HC O PLA2 C(CH2) 14CH3 O C(CH2) 7CH=CH(CH 2) 7CH3 O H OPO3 2- H2 C O PLC P O H HO O- OH H OPO3 2- H PLD IP3 OH H PI45BP H Review Questions What are the general lipid classes? What are the general lipid structures? How do the PLs act (site, products)?

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