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  • Each cell is encircled by a membrane and most cells are equipped with an extensive intracellular membrane system. Membranes fence the cell's interior off from its surrounding. They let water, certain ions and substrates into the cell, are vital for the cell's energy budget and they excrete substances. They protect the cell. Without them would the cell contents diffuse into their surroundings, information containing molecules would be lost and the metabolic pathways would seek a thermal equilibrium: the death of each living system. 
  • In medicine, microbiology, cellular physiology and biochemistry a membrane is a thin layer that separates various cellular structures or organs. It usually includes lipid bilayer reinforced by proteins and other macromolecules. Artificial, semipermeable membranes which are used to separate species in a fluid on the basis of size, charge or other characteristics. Such membranes are employed in a range of applications from water and wastewater treatment, diffuser (sewage), landfill liners (nanofiltration, ultrafiltration and microfiltration) to hydrogen fuel cells.
  • The cell membrane (or plasma membrane) surrounds all living cells, and is the cell's most important organelle. It controls how substances can move in and out of the cell and is responsible for many other properties of the cell as well. The membranes that surround the nucleus and other organelles are almost identical to the cell membrane. Membranes are composed of phospholipids, proteins and carbohydrates arranged in a fluid mosaic structure.
  • One universal feature of all cells is an outer limiting membrane called the plasma membrane. In addition, all eukaryotic cells contain elaborate systems of internal membranes which set up various membrane-enclosed compartments within the cell.Cell membranes are built from lipids and proteins. 
  • The plasma membrane serves as the interface between the machinery in the interior of the cell and the extracellular fluid (ECF) that bathes all cells. The lipids in the plasma membrane are chiefly phospholipids like phosphatidyl ethanolamine and cholesterol. Phospholipids are amphiphilic with the hydrocarbon tail of the molecule being hydrophobic; its polar head hydrophilic.
  • The cell is not an amorphous sack of components, but a complex structure filled with organelles. Membranes are not passive barriers. Membranes are dynamic. Membrane receptors bind specific messenger molecules on the exterior surface of the cell. The acetylcholine receptor of nervous tissue exemplifies a direct response type of receptor. The receptor is a complex pentameric protein which forms a channel through the membrane. 
  • Membrane protein is generally soluble only in the presence of micelles; thus, it is very diffi cult to characterize the oligomerization state of the membrane protein in a lipid-containing solvent. In order to keep the membrane protein in solution, it was necessary to use a mobile phase that contained lipids at greater than the critical micelle concentration.
  • Water utilities nationwide are turning to membrane filtration to meet more stringent federal drinking water regulations in order to remove turbidity, precursors, and disinfectant tolerant microorganisms from both groundwater and surface water supplies. Amniotic membrane, the innermost layer of fetal (or placental) membrane, consists of a thick basement membrane and an avascular stroma. Its function is to protect the fetus from unwanted maternal insults during development.
  • There are five important characteristics of semi permeable membranes which determine their quality namely,Salt rejection efficiency , Flux , tolerance to temperature, pH variations, chemical constituents , Fouling tendency and durability. A membrane separation system separates an influent stream into two effluent streams known as the permeate and the concentrate. The permeate is the portion of the fluid that has passed through the semi-permeable membrane. Whereas the concentrate stream contains the constituents that have been rejected by the membrane.
  • Membranes have gained an important place in chemical technology and are used in a broad range of applications. The key property that is exploited is the ability of a membrane to control the permeation rate of a chemical species through the membrane. In controlled drug delivery, the goal is to moderate the permeation rate of a drug from a reservoir to the body. 
General  and Production
  • Membrane Information
  • Cell Membranes
  • Overview of membranes
  • Structure of the Cell Membrane
  • Diffusion and Permeability
  • Vibrational Modes of a Rectangular Membrane
  • 3D Simulation of Biological Membrane
  • EPDM Membrane Production
  • Plasma membrane production of ceramide from ganglioside


  • Intrinsic Membrane Properties of Laryngeal Motoneurons
  • Physical properties of the plasma membrane
  • General properties
  • Membrane Properties and Monosynaptic Retinal Excitation of Neurons
  • FAQ of Membrane Properties
  • Gene Organization of Ion Channels
  • Mosaic properties of Cell Membranes


  • Excess Plasma Membrane and Effects of Ionic Amphipaths on Mechanics of outer Hair Cell Lateral Wall
  • Interaction between Phloretin and the Red Blood Cell Membrane 
  • Reactions of Root Plasma Membrane Redox Activities in Iron-Deficient Cucumber Plants 
  • Cell-Free Synthesis for Analyzing the Membrane
  • Active Behavior of the Cell Membrane
  • Cell Membrane Stretch Modulates the High-Conductance Ca2+
  • Characterization of Cell Membrane Electroporation
  • Membrane Structure and Function
  • Transport Across Cell Membranes
  • Membrane Unit Operations

Membrane Modules and Materials

  • Isolation of Proteins from Fermentation Broth of high Cell Density with a new Cross Flow Filtration
  • NeuroSim
  • Polysulfone and polyethersulfone
  • Flexible membrane materials
  • Membrane Materials

Company Profiles

  • eMembrane Inc
  • Advantec MFS Inc.,
  • Ambion
  • Koch Membrane Systems, Inc.
  • Membrane Extraction Technology
  • Millipore
  • SpinTek Filtration
  • Synder Filtration
  • PolyFuel


  • Intota
  • Peter Pryciak, Ph.D.
  • Alfred Imre Tauber
  • The Cecon Group Inc
  • Carl-Henrik Brogren
  • Drion G. Boucias
  • Phyllis A. Kirchner, MT(ASCP)SH
  • Dr Paul Voorheis
  • Antonio Scarpa
  • Bahman Anvari


  • SNP Analysis and Presentation in the Pharmacogenetics of Membrane Transporters
  • Microbial Cell Project
  • Molecular Dynamics of Membrane Protein and Receptor Protein Binding
  • Membrane Mechanisms Project
  • Dynamic reorganization of the plasma membrane on single-molecule stimulation in vivo
  • Cell Membranes Problem Set
  • Structure and Function of Membrane-Integral Receptors
  • Advanced Membranes Technology Platform for Hydrocarbon Separations 
  • Membrane Proteins
  • Membrane Filtration
  • Reuse of Wastewater of the Textile Industry After its Treatment with a Combination of Physico-Chemical Treatment and Membrane Technologies
  • Nanofiltration and Reverse Osmosis 
  • Recent Developments in CO2 Removal Membrane Technology
  • Indigenous Thin Film Composite Reverse Osmosis Membrane Technology
  • Membrane Separation Processes
  • Integrated Cell Membrane Nanotechnology
  • Protein-Protein Interaction Technology


  • Cross Flow Filtration Membrane Test Unit
  • Gas dehydration membrane with low oxygen and nitrogen permeability
  • Ultrasonically Cleaned Membrane Filtration System
  • Process for the Manufacture of a Membrane Device with Internal sweep
  • Purification of Polycarbonate Solution
  • Cell Having Modified Cell Membrane
  • Mutant Resistant to cell Membrane Synthesis Inhibitor
  • Patient-specific white blood cell malignancy vaccine from membrane-proteoliposomes
  • Loading metal particles into cell membrane vesicles and metal particular use for imaging and therapy


  • Use of Amniotic Membrane in Ocular Surface Reconstruction
  • Biological Membranes and Membrane Proteins: From Single Molecules to Living Systems
  • Membrane Applications for Nuclear Hydrogen Production Processes
  • Applications in the Cane and Beet Sugar Industries
  • Membrane filtration: Innovative Applications
  • The role of plasma membrane ion exchangers in cell migration


  • Membrane protein 'factory' may lead to new drug treatments
  • Purdue center formed to create devices to speed drug discovery
  • Chinese Water Industry Booming
  • Membrane Industry Crucial to the 21st Century
  • Microfiltration Market More than $1.2 Billion by 2010
  • Status of Fuel Cell Technology in China
  • Polyfuel Breakthrough Makes High Performance Portable Fuel Cells Easier to Manufacture
  • An expanded understanding of membrane technology is fostering new environmental applications
  • Overview of Membrane Science and Technology


  • Overview of Membrane Science and Technology
  • Biosensor and Biomimetic Membrane Technology Gets Boost from NIST
  • Membrane Properties: Exploration of Sperm/Microbe Susceptibility
  • A Novel Quantification of Initial Deposition of Microorganisms onto a Membrane Surface
  • Membrane Processes
  • Animal cells dependent on exogenous phosphatidylcholine for membrane biogenesis 
  • Molecular Evaluation of the Plasma Membrane Proton Pump from Aspergillus fumigatus 
  • PolyFuel, Inc secures $18.4 Million Financing
  • Genomics of plant cell wall biogenesis
  • Peptide Delivers Poison to Cancer Cells
  • AMTA Membership Benefits

Suppliers and Buyers

  • Cape Cod, Inc
  • Cell Membrane Suppliers
  • Cell Membrane Selling Leads
  • Nanofilter Membrane Manufacturers
  • Plasma Membrane Suppliers
  • Plasmalemma Suppliers
  • Plasma Membrane Selling Leads
  • High Pressure Membrane Suppliers
  • MF membrane Suppliers
  • UF membrane Suppliers
  • Membrane Buyers
  • Buying Leads of Cell Membrane
  • Cell Membrane Buyers

Equipments Suppliers

  • Membrane Adsorber Suppliers
  • Centrifugal Filter Suppliers
  • Protein Array Suppliers
  • Vaccine Suppliers
  • Virus Filter Suppliers


  • Membrane Proteins of Known structure
  • Membrane Transport Proteins
  • Cellular Component Ontology Guidelines
  • Clinical Guidelines
  • 2000 Guide to the Membrane

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