NATS 1610 Lecture Notes - Lecture 14: Lipid Bilayer, Membrane Lipids, Membrane Transport Protein

• School: York University
• Department: Natural Science
• Course: NATS 1610
• Professor: Barbara Czaban

Document Summary

P la s ma me mbra ne: ma de of a phos pholipid bila ye r with a tta che d a nd e mbe dde d prote ins a nd chole s te rol. P hos pholipids: ha ve pola r he a ds, ha ve non pola r ta ils, form s phe rica l bila ye r whe n pla ce d in wa te r. Diffe re nt prote ins ha ve diffe re nt functions , s ome ha ve a dhe s ion, tra ns port, re ce ptions a nd s ome a re e nzyme s. Amphipa thic: ha ve hydrophobic a nd hydrophilic re gions. The lipid bila ye r is self sealing : it re a rra nge s its e lf to hide the hydrophobic ta ils e xpos e d to wa te r. Me mbra ne lipid bila ye r impermeability.