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Related Concept Videos

Peptide Bonds02:43

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A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...
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Skeletal muscle cells, also called muscle fibers, are distinctly elongated, multi-nucleated, slender biological units. They are packed with specialized structures designed to facilitate their primary function, which is contraction.
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Peptide Identification Using Tandem Mass Spectrometry01:33

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Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
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Electron Microscope Tomography and Single-particle Reconstruction01:07

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
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Electrocyclic reactions, cycloadditions, and sigmatropic rearrangements are concerted pericyclic reactions that proceed via a cyclic transition state. These reactions are stereospecific and regioselective. The stereochemistry of the products depends on the symmetry characteristics of the interacting orbitals and the reaction conditions. Accordingly, pericyclic reactions are classified as either symmetry-allowed or symmetry-forbidden. Woodward and Hoffmann presented the selection criteria for...
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Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
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Updated: Feb 9, 2026

Self-Assembly of Gamma-Modified Peptide Nucleic Acids into Complex Nanostructures in Organic Solvent Mixtures
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Microscopic characterization of peptide nanostructures.

Rashad Mammadov1, Ayse B Tekinay, Aykutlu Dana

  • 1UNAM-Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey.

Micron (Oxford, England : 1993)
|August 9, 2011
PubMed
Summary

Microscopic characterization is key for understanding peptide nanostructures. This review covers essential microscopy tools like TEM, SEM, and AFM for analyzing self-assembling peptide molecules.

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Microscopy

Background:

  • Peptide-based nanomaterials offer advantages like facile synthesis and functionalization.
  • Their self-assembly into nanostructures is crucial for applications in regenerative medicine and electronics.
  • Understanding the nanoscale structure is vital for correlating function with form.

Purpose of the Study:

  • To review fundamental studies in the microscopic characterization of peptide nanostructures.
  • To provide insights into widely used microscopy tools for analyzing these materials.
  • To discuss specimen preparation and image interpretation for nanostructure analysis.

Main Methods:

  • Transmission Electron Microscopy (TEM)
  • Scanning Electron Microscopy (SEM)
  • Atomic Force Microscopy (AFM)
  • Advanced Optical Microscopy Techniques

Main Results:

  • Detailed discussion of various microscopy techniques applicable to peptide nanostructures.
  • Explanation of specimen preparation methods tailored for nanoscale imaging.
  • Guidance on interpreting microscopic images to understand structure-function relationships.

Conclusions:

  • Microscopy is critical for elucidating the self-assembly processes of peptides.
  • Advanced imaging techniques enable detailed analysis of peptide nanostructure morphology.
  • This review serves as a guide for researchers in characterizing peptide-based nanomaterials.