Primary gel-to-liquid crystalline phase transitions of different phospholipids
| Phosphatidylcholine | Acyl Chain Length, No. of unsaturations | Tm | Reference |
|---|---|---|---|
| °C | |||
| DSPC | 18:0, 18:0 | 55 | Goodwin et al. (1982) |
| HSPC | 16–18 (mixture)2-a | 52 | Horowitz et al. (1992) |
| DPPC | 16:0, 16:0 | 42 | Papahadjopoulos et al. (1973b) |
| POPC | 16:0, 18:1 | −7 | Scherer and Seelig (1989) |
| SLPC | 18:0, 18:2 | −16.7 | Sanchez-Migallon and Aranda (1996) |
| DOPC | 18:1, 18:1 | −21 | Barton and Gunstone (1975) |
| eggPC | Mixture2-b | −2.5 | Bach et al. (1982) |
| DSPG | 18:0, 18:0 | 53.0 | Surewicz and Epand (1986) |
| DPPG | 16:0, 16:0 | 41.1 | Boggs et al. (1989) |
| eggPG | Mixture | 37 | Vincent et al. (1991) |
| DSPA | 18:0, 18:0 | 58 | Krill et al. (1992) |
An excellent database containing easily searchable physical properties of numerous lipids can be found athttp://www.lipidat.chemistry.ohio-state.edu.
DOPC, dioloeylphosphatidylcholine; eggPG, egg phosphatidylglycerol; POPC, 1-palmitoyl, 2-oleoyl phosphatidylcholine; SLPC, 1-stearoyl, 2-linoleoyl phosphatidylcholine.
↵2-a Approximately 18% of the acyl chains are 16 carbons, and 82% are 18 carbons. All unsaturations have been reduced with a hydrogenation reaction.
↵2-b Contains ∼34% of 16:0, ∼1% of 16:1, ∼10.5% of 18:0, ∼31% of 18:1, ∼17.7% of 18:2, ∼3% of 20:4, and ∼1.7% of other.