Histidine

Histidine (abbreviated as His or H) is an α-amino acid with an imidazole functional group. It is one of the 22 proteinogenic amino acids. Its codons are CAU and CAC. Histidine was first isolated by German physician Albrecht Kossel in 1896. Histidine is an essential amino acid in humans and other mammals. It was initially thought that it was only essential for infants, but longer-term studies established that it is also essential for adult humans.

Read more about HistidineChemical Properties, Metabolism, Supplementation, Additional Images

Other articles related to "histidine":

Histidine Kinase
... Histidine Kinases (HK) are multifunctional, typically transmembrane, proteins of the transferase class that play a role in signal transduction across the cellular membrane ... a HK transfers a phosphate group from ATP to a histidine residue within the kinase, and then to an aspartate residue on a 'receiver domain' on a different protein (or sometimes on ... In terms of enzymology, a histidine kinase (EC 2.7.13.3) is an enzyme that catalyzes the chemical reaction ATP + protein L-histidine ADP + protein N-phospho-L-hi ...
Two-component Regulatory System - Mechanism of Action
... groups from adenosine triphosphate (ATP) to a specific histidine residue in the histidine kinases (HK) ... on an aspartate residue and to be protein phosphatases for the histidine kinases ...
Protein-histidine Tele-kinase
... In enzymology, a protein-histidine tele-kinase (EC 2.7.13.2) is an enzyme that catalyzes the chemical reaction ATP + protein -histidine ADP + protein Nτ-phospho--histidine Thus ... a phosphate group to the sidechain of histidine residues in proteins (protein-histidine kinases) ... systematic name of this enzyme class is ATPprotein-L-histidine Ntau-phosphotransferase ...
Histidine - Additional Images
... Histidine The histidine-bound heme group of succinate dehydrogenase, an electron carrier in the mitochondrial electron transfer chain ...
Hutp
... HutP (Histidine utilizing Protein) is one of the anti-terminator proteins of Bacillus subtilis, which is responsible for regulating the expression of the hut structural genes of ... In the presence of L-histidine and divalent metal ions, HutP binds to the nascent hut mRNA leader transcript ... In the absence of L-histidine and divalent metal ions or both, HutP does not bind to the hut mRNA, thus allowing the formation of a stem loop terminator structure within the ...