Fraction of cell membrane surface occupied by proteins

Value 30 %
Organism Cyanobacteria Synechocystis PCC 6803
Reference Kihara S, Hartzler DA, Savikhin S. Oxygen concentration inside a functioning photosynthetic cell. Biophys J. 2014 May 6 106(9):1882-9. doi: 10.1016/j.bpj.2014.03.031 p.1884 left column top paragraphPubMed ID24806920
Primary Source [40] Szalontai, B., Nishiyama, Y. et al., Membrane dynamics as seen by Fourier transform infrared spectroscopy in a cyanobacterium, Synechocystis PCC 6803. The effects of lipid unsaturation and the protein-to-lipid ratio. Biochim. Biophys. Acta. 2000 1509: 409–419PubMed ID11118550
Comments P.1883 right column bottom paragraph: "The permeability of the cell membrane to oxygen has not been directly measured. However, the cell membrane is essentially similar in its overall composition to the thylakoid membrane, aside from its lower protein content—only 30% of its area has been shown to be occupied by proteins (primary source). Thus, the permeability of the plasma membrane is Pp = 28 cm/s."
Entered by Uri M
ID 114987