A biological membrane, biomembrane or cell membrane is a selectively permeable membrane that separates the interior of a cell from the external environment...

cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that...

Semipermeable membrane is a type of biological or synthetic, polymeric membrane that allows certain molecules or ions to pass through it by osmosis. The...

Membrane bioreactors are combinations of membrane processes like microfiltration or ultrafiltration with a biological wastewater treatment process, the...

particles. Membranes can be generally classified into synthetic membranes and biological membranes. Biological membranes include cell membranes (outer coverings...

Peripheral membrane proteins, or extrinsic membrane proteins, are membrane proteins that adhere only temporarily to the biological membrane with which...

integral, or intrinsic, membrane protein (IMP) is a type of membrane protein that is permanently attached to the biological membrane. All transmembrane proteins...

in cell membranes and perform biological functions. Also, a narrow annular lipid shell of membrane lipids in contact with integral membrane proteins...

Membrane potential (also transmembrane potential or membrane voltage) is the difference in electric potential between the interior and the exterior of...

vesicles, multilamellar/unilamellar liposomes, or membranes in an aqueous environment. Biological lipids originate entirely or in part from two distinct...

membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes...

transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins. Being passive, facilitated...

Membrane proteins are common proteins that are part of, or interact with, biological membranes. Membrane proteins fall into several broad categories depending...

across a biological membrane. Transport proteins are integral transmembrane proteins; that is they exist permanently within and span the membrane across...

A proton pump is an integral membrane protein pump that builds up a proton gradient across a biological membrane. Proton pumps catalyze the following...

vital biological processes including cell signaling. They are simpler and smaller than eukaryotic cells, and lack a nucleus, and other membrane-bound...

light on the understanding of cell membranes, by stressing the important role played by proteins in biological membranes. By the 1950s, cell biologists verified...

tails directed into the membrane. That is the dominant structural motif of the membranes of all cells and of some other biological structures, such as vesicles...

the main component of biological membranes in eukaryotic cells. They are a type of lipid, of which its composition affects membrane structure and properties...

characteristics regarding the structure of functional cell membranes. According to this biological model, there is a lipid bilayer (two molecules thick layer...

the main components of biological membranes. The amphiphilic nature of these molecules defines the way in which they form membranes. They arrange themselves...

Membrane biology is the study of the biological and physiochemical characteristics of membranes, with applications in the study of cellular physiology...

Membrane fusion proteins (not to be confused with chimeric or fusion proteins) are proteins that cause fusion of biological membranes. Membrane fusion...

Osmosis is a vital process in biological systems, as biological membranes are semipermeable. In general, these membranes are impermeable to large and polar...

concentrations and pH by transporting ions across their membranes using proteins called ion pumps. Biological bilayers are usually composed of amphiphilic phospholipids...

In a biological membrane, the reversal potential is the membrane potential at which the direction of ionic current reverses. At the reversal potential...

photophosphorylation, light energy is used to pump protons across a biological membrane, mediated by flow of electrons through an electron transport chain...

conductances of these channels. In the case of ionic current across biological membranes, currents are measured from inside to outside. That is, positive...

protein, across a biological membrane. Carrier proteins are integral membrane proteins; that is, they exist within and span the membrane across which they...

"fluid mosaic" model of the cell membrane by Singer and Nicolson in 1972. According to this model, biological membranes are composed largely of bare lipid...