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 synthetic or biologic, polymeric membrane that allows certain molecules or ions to pass through it by osmosis. The...

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...

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

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

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

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

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

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

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

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

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

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

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

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

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...

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

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

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

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

of N- and C-termini of membrane-spanning polypeptide chain with respect to the inner or outer sides of the biological membrane occupied by the protein...

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

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

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

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

Spin labels are normally used as tools for probing proteins or biological membrane-local dynamics using electron paramagnetic resonance spectroscopy...

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

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