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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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Frustration occurs when people are obstructed or prevented from achieving a desired goal or fulfilling a perceived need. For example, when someone's input is ignored in a discussion, it can lead to feelings of frustration. Conflict, however, arises from opposing interests, goals, or actions. Conflicts can take various forms based on the nature of these opposing desires or goals.
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The actuarial approach, a statistical method originally developed for life insurance risk assessment, is widely used to calculate survival rates in clinical and population studies. This method accounts for participants lost to follow-up or those who die from causes unrelated to the study, ensuring a more accurate representation of survival probabilities.
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The information-processing theory of cognitive development centers on fundamental mental processes, including attention, memory, and problem-solving skills. Researchers in this field examine how cognitive abilities, such as working memory, evolve and influence children's overall development. Studies indicate that children with stronger working memory tend to excel in reading comprehension, math, and problem-solving compared to peers with less efficient memory skills. Low working memory is...
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Peptide-based Identification of Functional Motifs and their Binding Partners
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Reductionist Approach in Peptide-Based Nanotechnology.

Ehud Gazit1

  • 1Department of Molecular Microbiology and Biotechnology, Department of Materials Science and Engineering, Tel Aviv University, Tel Aviv 6997801, Israel;

Annual Review of Biochemistry
|June 22, 2018
PubMed
Summary

Short peptide sequences, even dipeptides, can self-assemble into ordered nanostructures with remarkable properties. This reductionist approach in nanotechnology offers versatile biointerface applications.

Keywords:
bionanotechnologymolecular materialsmolecular recognitionpeptide engineeringself-assemblysupramolecular chemistry

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Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
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Area of Science:

  • Nanotechnology
  • Materials Science
  • Biomolecular Engineering

Background:

  • Molecular self-assembly of proteins and peptides is a key area in nanotechnology.
  • Polyamides offer diverse physical properties for advanced material applications.
  • Reductionist approaches simplify complex biological molecules for novel functionalities.

Purpose of the Study:

  • To explore the potential of short peptide sequences in forming ordered nanostructures.
  • To investigate the properties and applications of peptide-based nanomaterials.
  • To review the advancements and future directions in reductionist peptide self-assembly.

Main Methods:

  • Utilizing extremely short peptide sequences, including dipeptides, for self-assembly.
  • Employing a noncoded amino acid, α-aminoisobutryic acid, for superhelical assembly.
  • Investigating peptide nucleic acids (PNAs) and coassembly techniques.

Main Results:

  • Short peptides (dipeptides) form well-ordered, amyloid-like β-sheet-rich assemblies.
  • These peptide assemblies exhibit notable mechanical, optical, and electrical characteristics.
  • Superhelical assemblies from α-aminoisobutryic acid enable applications in biointerfaces, surfactants, and DNA-binding agents.

Conclusions:

  • The reductionist approach effectively creates functional nanostructures from short peptides.
  • Peptide-based nanostructures offer diverse applications in nanotechnology and biomaterials.
  • Future research holds exciting prospects for peptide self-assembly in advanced materials and biointerfaces.