Phospholipids in Plasma Membrane H3C. CHa OH +NH3 NH3 CH2 COO CH2 OL CH A2 OH O=P-0 O=P O -HC- CH2 ·HC C=0 C=0 =0 PE PS P Phospholipids in Plasma Membrane O P O O O￾CH2 CH2 +NH3 H2C HC CH2 O O C OC O O P O O O￾CH2 C +NH3 H2C HC CH2 O O C OCO O P O O O￾CH2 CH2 + N H2C HC CH2 O O COCO COO- H CH3 H3C CH3 R1 R2 R1 R2 R1 R2 P O O O￾H2C HC CH2 O O C OC O R1 R2 H OH OH H OH OH H H OH O H OH PE PS PC PI