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Conjugated Proteins02:50

Conjugated Proteins

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Simple proteins and protein complexes contain only amino acids. In contrast, many other proteins, called conjugated proteins, covalently bond with non-protein moieties.
Nucleoproteins are protein complexes that contain nucleic acids, categorized as deoxyribonucleoproteins (DNPs) or ribonucleoproteins (RNPs) respectively. The nucleosome is a typical example of a DNP where nuclear DNA is associated with histone proteins. The major antigen for the Covid-19 virus SARS-CoV is an RNP that is critical...
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Conjugation01:19

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Conjugation is a form of horizontal gene transfer that primarily occurs in bacteria and some archaea, promoting genetic diversity and adaptation. Bacteria can acquire resistance genes through conjugative plasmids, allowing them to survive antibiotic treatments that would otherwise be lethal. This process involves direct contact between cells through specialized structures such as the sex pilus and is mediated by conjugative plasmids, including the F (fertility) factor.Conjugation requires...
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Bacterial conjugation is a mechanism of horizontal gene transfer that enables the exchange of genetic material between bacterial cells through direct contact. This process is facilitated by a donor cell carrying a conjugative plasmid, which encodes genes necessary for pilus formation, DNA replication, and transfer. The conjugative plasmid plays a central role in initiating and executing the transfer of genetic material.The tra region of the conjugative plasmid encodes proteins responsible for...
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Relative Strengths of Conjugate Acid-Base Pairs02:29

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Brønsted-Lowry acid-base chemistry is the transfer of protons; thus, logic suggests a relation between the relative strengths of conjugate acid-base pairs. The strength of an acid or base is quantified in its ionization constant, Ka or Kb, which represents the extent of the acid or base ionization reaction. For the conjugate acid-base pair HA / A−, the ionization equilibrium equations and ionization constant expressions are
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Electrical Current01:10

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Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836).
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Surface Functionalization of Hepatitis E Virus Nanoparticles Using Chemical Conjugation Methods
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Current Conjugation Methods for Immunosensors.

Zeyang Li1, Guan-Yu Chen2,3

  • 1Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. zeyangli@mit.edu.

Nanomaterials (Basel, Switzerland)
|April 28, 2018
PubMed
Summary
This summary is machine-generated.

This review explores immobilization strategies for immunosensors, focusing on polymeric nanomaterials and nanoparticles. It details methods like adsorption and covalent linking to enhance antigen recognition for diagnostic applications.

Keywords:
immobilization methodsimmunosensorspolymeric nanomaterials

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Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Analytical Chemistry

Background:

  • Recent advances in polymeric nanomaterials and nanoparticles have expanded immunosensor applications in diagnostics.
  • Specific molecular recognition is crucial for immunosensor function, requiring effective immobilization of recognition elements.

Purpose of the Study:

  • To review and discuss various immobilization strategies for immunosensors.
  • To analyze the impact of different methods on biosensor performance.

Main Methods:

  • Literature review of immobilization techniques for immunosensors.
  • Discussion of adsorption, affinity attachment, random cross-linking, and covalent linking strategies.

Main Results:

  • Immobilization strategies significantly influence immunosensor performance metrics.
  • Key performance indicators include capture molecule loading, orientation, stability, and efficiency.

Conclusions:

  • The selection of appropriate immobilization methods is critical for optimizing immunosensor design and function.
  • Effective immobilization is key to advancing diagnostic and prognostic research using immunosensors.