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Related Concept Videos

Matrix Proteoglycans and Glycoproteins01:21

Matrix Proteoglycans and Glycoproteins

Proteoglycans are extensively glycosylated proteins, commonly found in the extracellular matrix, interwoven with collagen fibers. Hyaline cartilage, the most common type of cartilage in the body, consists of short and dispersed collagen fibers associated with large amounts of proteoglycans. These proteoglycans have long negative charges that attract cations, which in turn attract water molecules. This influx of ions and water molecules swells up the proteoglycan like a water-soaked gel that can...
Fibrous Proteins00:55

Fibrous Proteins

Fibrous proteins are either long and narrow proteins or assemble to form long and thin structures. They contain repetitive units and usually consist of either alpha helices or beta sheets and, in rare cases, a mix of both. The amino acids in the primary structure often consist of repeating amino acid sequences. The role of fibrous proteins is primarily structural. Many are located in the extracellular matrix and are present in connective tissues to impart strength and joint mobility. They are...
Structure of Porins01:21

Structure of Porins

Mitochondria, chloroplasts, and gram-negative bacteria have transmembrane, beta-barrel proteins called porins to mediate the free diffusion of ions and metabolites across the membrane. Mitochondrial porin precursors contain conserved amino acid sequences called beta signals at their C-terminal. Beta signals have a  motif of PoXGXXHyXHy (Po-Polar, X-Any amino acid, G-Glycine, Hy-LargeHydrophobic), which are crucial for precursor recognition to initiate precursor assembly. Beta-barrel precursors...
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Introduction to Membrane Proteins

The cell membrane, or plasma membrane, is an ever-changing landscape. It is described as a fluid mosaic where various macromolecules are embedded in the phospholipid bilayer. Among the macromolecules are proteins. The protein content varies across cell types. For example, mitochondrial inner membranes contain ~76% protein content, while myelin contains ~18% protein content. Individual cells contain many types of membrane proteins—red blood cells contain over 50—and different cell types have...
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Protein and Protein Structure

Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
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Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...

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Low Molecular Weight Protein Enrichment on Mesoporous Silica Thin Films for Biomarker Discovery
13:00

Low Molecular Weight Protein Enrichment on Mesoporous Silica Thin Films for Biomarker Discovery

Published on: April 17, 2012

Proteins in mesoporous silicates.

Sarah Hudson1, Jakki Cooney, Edmond Magner

  • 1Department of Chemical and Environmental Sciences, Materials and Surface Science Institute, University of Limerick, Plassey, Co. Limerick IE, Ireland. sarah.hudson@ul.ie

Angewandte Chemie (International Ed. in English)
|October 4, 2008
PubMed
Summary
This summary is machine-generated.

Mesoporous silicates offer tailored structures for immobilizing proteins. These advanced materials enable enhanced biocatalysis by supporting enzymes and other biological macromolecules.

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Area of Science:

  • Materials Science
  • Biotechnology
  • Chemical Engineering

Background:

  • Mesoporous silicates (MPS) possess ordered pore structures suitable for biological molecules.
  • MPS are widely investigated as supports for proteins and enzymes in biocatalysis.
  • Advancements in synthesis allow fine control over MPS properties like pore size, structure, and stability.

Purpose of the Study:

  • To review the use of ordered, large-pore, functionalized mesoporous silicates.
  • To highlight the immobilization of proteins within these silicate structures for biocatalysis.

Main Methods:

  • Discussion of novel synthesis methods for mesoporous silicates.
  • Analysis of the adsorption capabilities of MPS for various biological macromolecules.
  • Review of functionalized mesoporous silicates for protein immobilization.

Main Results:

  • Mesoporous silicates can accommodate diverse biomacromolecules including heme proteins, lipases, antibody fragments, and proteases.
  • Precise control over MPS characteristics enables effective protein adsorption and stabilization.
  • Functionalized MPS demonstrate significant potential for robust biocatalytic systems.

Conclusions:

  • Ordered, large-pore, functionalized mesoporous silicates are effective platforms for protein immobilization.
  • These materials significantly advance the field of biocatalysis through enhanced enzyme support.
  • Future applications are promising for tailored biocatalytic processes using advanced MPS.