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Related Concept Videos

Peptide Bonds02:43

Peptide Bonds

53.9K
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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Fibrous Proteins00:55

Fibrous Proteins

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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...
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Exploitable length correlations in peptide nanofibres.

Emiliana De Santis1, Nilofar Faruqui, James E Noble

  • 1National Physical Laboratory, Hampton Road, Teddington, Middlesex TW11 0LW, UK. max.ryadnov@npl.co.uk.

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|August 23, 2014
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Summary
This summary is machine-generated.

Researchers found that peptide length and charge influence the form and function of nanoscale fibers. This discovery allows for the design of biologically active nanostructures with controlled cell proliferation effects.

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Area of Science:

  • Biomolecular engineering
  • Nanomaterials science
  • Cellular biology

Background:

  • Sequence-prescribed biomolecular assemblies are crucial for developing novel nanostructured materials.
  • Matching the form and function of these materials is a critical challenge in their design.
  • Peptide assembly offers diverse forms and supports function but lacks precise control over both aspects.

Purpose of the Study:

  • To investigate length correlations in peptide nanoscale fibers to control their form.
  • To understand the interplay between peptide properties and assembly patterns.
  • To correlate these assembly patterns with biological function, specifically cell proliferation.

Main Methods:

  • Utilized a model helical template to study peptide nanoscale fibers.
  • Analyzed the synergistic interplay between peptide length, net charge, folding, and supramolecular cooperativity.
  • Correlated observed assembly patterns with quantitative measurements of cell proliferation.

Main Results:

  • Established that different assembly patterns arise from the interplay of peptide length, charge, folding, and cooperativity.
  • Demonstrated a correlation between peptide length and increased cell proliferation.
  • Identified specific length correlations that dictate the form of peptide nanoscale fibers.

Conclusions:

  • The study reveals efficient correlations for programming longitudinally finite and biologically active nanoscale fibers.
  • Findings provide a rationale for designing peptide-based nanostructures with predictable form and function.
  • This work advances the control over peptide assembly for applications in regenerative medicine and tissue engineering.