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Peptoids (root from the Greek πεπτός, peptós "digested"; derived from πέσσειν, péssein "to digest" and the Greek-derived suffix -oid meaning "like, like that of, thing like a _____," ), or poly-N-substituted glycines, are a class of biochemicals known as biomimetics that replicate the behavior of biological molecules. [1]
Scheme of solid-phase peptides synthesis (SPPS) on a resin as solid support with protected amino acids.The deprotection is usually done using a base such as piperidine.This is followed by a coupling step (a protected amino acid is added) to the growing peptide chain.
β-alanine, an example of a β-amino acid. The amino group attaches not to the α carbon but to the β-carbon, which in this case is a methylene group.. Beta-peptides (β-peptides) are peptides derived from β-amino acids, in which the amino group is attached to the β-carbon (i.e. the carbon two atoms away from the carboxylate group).
Peptoid nanosheets have a very high surface area, which can be readily functionalized to serve as a platform for sensing and templating. [4] Also, their hydrophobic interiors can accommodate hydrophobic small molecule cargos, which have been demonstrated by the sequestration of Nile red when this dye was injected into an aqueous solution of the peptoid nanosheets. [5]
There are numerous types of peptides that have been classified according to their sources and functions. According to the Handbook of Biologically Active Peptides, some groups of peptides include plant peptides, bacterial/antibiotic peptides, fungal peptides, invertebrate peptides, amphibian/skin peptides, venom peptides, cancer/anticancer peptides, vaccine peptides, immune/inflammatory ...
Antimicrobial peptides from animals, plants and fungi organised by their secondary structure content. Circle size indicates overall molecular weight of each peptide.
Subsequent to the expression of the inactive apo ACP, the 4'-phosphopantetheine moiety is attached to a serine residue. This coupling is mediated by acyl carrier protein synthase (ACPS), a 4'-phosphopantetheinyl transferase. 4'-Phosphopantetheine is a prosthetic group of several acyl carrier proteins including the acyl carrier proteins (ACP) of fatty acid synthases, ACPs of polyketide ...
The most important objectives that are frequently found in nanobiology involve applying nanotools to relevant medical/biological problems and refining these applications. Developing new tools, such as peptoid nanosheets, for medical and biological purposes is another primary objective in nanotechnology. New nanotools are often made by refining ...