2.2 SQUARE inside PROTEIN p0 inside PROTEIN p1 inside SIMPLE_MOLECULE _space_1_space_2_minus_Diacyl_minus_sn_minus_glycerol inside SIMPLE_MOLECULE sn_minus_Glycerol_space_3_minus_phosphate inside SIMPLE_MOLECULE Choline inside SIMPLE_MOLECULE Choline_space_phosphate inside SIMPLE_MOLECULE Phosphatidylcholine inside SIMPLE_MOLECULE sn_minus_Glycero_minus_3_minus_phosphocholine STATE_TRANSITION sn_minus_Glycero_minus_3_minus_phosphocholine Choline c5 c2 c1 STATE_TRANSITION Phosphatidylcholine _space_1_space_2_minus_Diacyl_minus_sn_minus_glycerol c4 c0 c3