Ads
related to: lysine synthesis
Search results
Results from the WOW.Com Content Network
Lysine (symbol Lys or K) [2] is an α-amino acid that is a precursor to many proteins.It contains an α-amino group (which is in the protonated −NH + 3 form when dissolved in water), an α-carboxylic acid group (which is in the deprotonated −COO − form when dissolved in water), and a side chain lysyl ((CH 2) 4 NH 2), classifying it as a basic, charged (at physiological pH), aliphatic ...
Amino acid biosynthesis is the set of biochemical processes (metabolic pathways) by which the amino acids are produced. The substrates for these processes are various compounds in the organism 's diet or growth media. Not all organisms are able to synthesize all amino acids. For example, humans can synthesize 11 of the 20 standard amino acids.
The amino acid L-lysine. The α-aminoadipate pathway is a biochemical pathway for the synthesis of the amino acid L-lysine.In the eukaryotes, this pathway is unique to several species of yeast, higher fungi (containing chitin in their cell walls), and the euglenids.
Biosynthesis occurs due to a series of chemical reactions. For these reactions to take place, the following elements are necessary: [ 1 ] Precursor compounds: these compounds are the starting molecules or substrates in a reaction. These may also be viewed as the reactants in a given chemical process.
Peptide synthesis. Coupling of two amino acids in solution. The unprotected amine of one reacts with the unprotected carboxylic acid group of the other to form a peptide bond. In this example, the second reactive group (amine/acid) in each of the starting materials bears a protecting group. In organic chemistry, peptide synthesis is the ...
Histone. Appearance. hide. Not to be confused with Histon. Schematic representation of the assembly of the core histones into the nucleosome. In biology, histones are highly basic proteins abundant in lysine and arginine residues that are found in eukaryotic cell nuclei and in most Archaeal phyla.
A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
Unlike posttranslational modifications of lysine such as hydroxylysine, methyllysine, and hypusine, pyrrolysine is incorporated during translation (protein synthesis) as directed by the genetic code, just like the standard amino acids. It is encoded in mRNA by the UAG codon, which in most organisms is the 'amber' stop codon.
Ads
related to: lysine synthesis