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Related Concept Videos

Conjugated Proteins02:50

Conjugated Proteins

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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Surface Functionalization of Hepatitis E Virus Nanoparticles Using Chemical Conjugation Methods
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Structure and function of nanoparticle-protein conjugates.

M-E Aubin-Tam1, K Hamad-Schifferli

  • 1Department of Biological Engineering, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA.

Biomedical Materials (Bristol, England)
|August 12, 2008
PubMed
Summary

Attaching proteins to nanoparticles requires careful site-specific methods to maintain protein function. Understanding the nanoparticle-protein interface is key for applications in sensing and therapy.

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Area of Science:

  • Bioconjugation Chemistry
  • Nanomaterials Science
  • Protein Engineering

Background:

  • Protein-nanoparticle conjugation is vital for applications in sensing, imaging, drug delivery, and catalysis.
  • Characterizing the nanoparticle-protein interface is crucial for controlling protein structure and activity.

Purpose of the Study:

  • To evaluate methods for successful site-specific protein attachment to nanoparticles.
  • To assess techniques for probing protein structure and activity after conjugation.
  • To explore molecular dynamics simulations for atomistic insights into nanoparticle attachment effects.

Main Methods:

  • Review and evaluation of various covalent and non-covalent linking chemistries for nanoparticle attachment.
  • Assessment of experimental techniques to probe protein structure and activity.
  • Utilization of molecular dynamics simulations to provide atomistic details.

Main Results:

  • Site-specific labeling is essential for controlling protein orientation on nanoparticles, critical for applications like fluorescence resonance energy transfer.
  • Protein structure and function are influenced by nanoparticle ligand chemistry, size, material, stoichiometry, labeling site, and linkage type (covalent vs. non-covalent).

Conclusions:

  • Effective characterization of the nanoparticle-protein interface is paramount for successful bioconjugation.
  • A combination of experimental and computational methods provides comprehensive understanding of nanoparticle-protein conjugates.