Phospholipid; Crystal packing; Bilayer membrane; Dipalmitoyl phosphatidylcholine; Gel phase; (Infrared)
It is shown, by infrared spectroscopy, that the packing in the gel phase of fully-hydrated dipalmitoyl phosphatidylcholine is not uniform over a large temperature range. With decreasing temperature, starting at that of the pretransition, there is a gradual change in the molecular packing of the acyl chains, from near hexagonal to orthorhombic or monoclinic.
Biochimica et Biophysica Acta (BBA) - Biomembranes596, no. 3: 463–467.