Related Experiment Video
Updated: Aug 9, 2026
07:56
Formation of Biomembrane Microarrays with a Squeegee-based Assembly Method
Published on: May 8, 2014
[Composite matrix membranes as synthetic receptor systems. 2. Structural-morphological characteristics]
Ukrains'Kyi Biokhimichnyi Zhurnal (1999 )
|March 30, 2006
Summary
Researchers studied composite imprinted membranes for selective adenosine 3',5'-cyclic monophosphate (cAMP) recognition. Optimal performance was linked to a limited thickness of the imprinted polymer layer.
Area of Science:
- Materials Science
- Analytical Chemistry
- Polymer Science
Context:
- Developing selective membranes for biomolecule recognition is crucial in diagnostics and separation technologies.
- Composite membranes offer tunable properties by combining support materials with functional layers.
- Adenosine 3",5"-cyclic monophosphate (cAMP) is a vital second messenger with significant biological roles.
Purpose:
- To investigate the structural and morphological characteristics of composite imprinted membranes designed for selective cAMP recognition.
- To correlate the physical properties of imprinted membranes with their separation performance.
- To determine the optimal thickness of the imprinted polymer layer for effective cAMP binding.
Summary:
- Composite polyvinylidene fluoride microfiltration membranes were fabricated with a photoinitiated imprinted polymer layer using cAMP as a template.
- Atomic force microscopy (AFM) and scanning electron microscopy (SEM) were employed to analyze membrane morphology, including pore size, layer thickness, and surface roughness.
- Analysis revealed that the thickness of the imprinted polymer layer significantly impacts the membrane's selective recognition capabilities, with an optimal limited thickness identified.
Impact:
- Provides insights into the structure-property relationships governing molecularly imprinted membranes.
- Establishes a basis for designing advanced imprinted membranes with enhanced selectivity and efficiency for specific analytes like cAMP.
- Contributes to the advancement of separation science and the development of novel biosensing platforms.
Related Concept Videos
01:54What are Membranes?
A key characteristic of life is the ability to separate the external environment from the internal space. To do this, cells have evolved semi-permeable membranes that regulate the passage of biological molecules. Additionally, the cell membrane defines a cell’s shape and interactions with the external environment. Eukaryotic cell membranes also serve to compartmentalize the internal space into organelles, including the endomembrane structures of the nucleus, endoplasmic reticulum and Golgi...
01:24What are Membranes?
A cell's plasma membrane demarcates the cell's borders and determines the nature of its interaction with the environment. Cells exclude certain substances, take in others, and excrete some others in controlled quantities. The plasma membrane must be flexible to allow certain cells, such as red and white blood cells, to change their shape while passing through narrow capillaries. These are the more obvious plasma membrane functions. In addition, the plasma membrane's surface carries markers that...
01:19Fluid Mosaic Model
Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich with the analogy of...
01:24Overview of Cell-Matrix Interactions
The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
01:09Multi-pass Transmembrane Proteins and β-barrels
In multi-pass transmembrane proteins, the polypeptide chain crosses the membrane more than once. The transmembrane polypeptide chain either forms an α-helix or β-strand structure. α-Helix containing multi-pass transmembrane proteins are ubiquitous, whereas β-strand containing ones are mainly found in gram-negative bacteria, mitochondria, and chloroplasts.
α-Helix containing multi-pass transmembrane proteins
Multi-pass transmembrane proteins such as G-protein-linked receptors (GPCRs) and...
α-Helix containing multi-pass transmembrane proteins
Multi-pass transmembrane proteins such as G-protein-linked receptors (GPCRs) and...
00:59Mechanisms of Membrane Domain Formation
Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...
Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...