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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 ...
Creatine peptides promote the release of hormones that influence one's exercise performance, muscle recovery and body composition, which is why some athletes are drawn to the amino acids.
Pages in category "Peptides" The following 200 pages are in this category, out of approximately 223 total. This list may not reflect recent changes.
The 21 proteinogenic α-amino acids found in eukaryotes, grouped according to their side chains' pK a values and charges carried at physiological pH (7.4) 2- , alpha- , or α-amino acids [ 21 ] have the generic formula H 2 NCHRCOOH in most cases, [ b ] where R is an organic substituent known as a " side chain ".
Proteins form by amino acids undergoing condensation reactions, in which the amino acids lose one water molecule per reaction in order to attach to one another with a peptide bond. By convention, a chain under 30 amino acids is often identified as a peptide, rather than a protein. [1]
Peptide fragmentation notation using the scheme of Roepstorff and Fohlman (1984). [5] A notation has been developed for indicating peptide fragments that arise from a tandem mass spectrum. [5] Peptide fragment ions are indicated by a, b, or c if the charge is retained on the N-terminus and by x, y or z if the charge is maintained on the C ...
Enzymes classified according to their Enzyme Commission number (EC). Note that strictly speaking, an EC number corresponds to the reaction the enzyme catalyzes, not the protein per se. However each EC number has been mapped to one or more specific proteins. List of enzymes; EC 1: Oxidoreductases; EC 2: Transferases; EC 3: Hydrolases; EC 4: Lyases
It often contains signal peptide sequences, "intracellular postal codes" that direct delivery of the protein to the proper organelle. The signal peptide is typically removed at the destination by a signal peptidase. The N-terminal amino acid of a protein is an important determinant of its half-life (likelihood of being degraded).
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