Search results
Results from the WOW.Com Content Network
Histidine ball and stick model spinning. Histidine (symbol His or H) [2] is an essential amino acid that is used in the biosynthesis of proteins.It contains an α-amino group (which is in the protonated –NH 3 + form under biological conditions), a carboxylic acid group (which is in the deprotonated –COO − form under biological conditions), and an imidazole side chain (which is partially ...
In terms of enzymology, a histidine kinase (EC 2.7.13.3, EnvZ, histidine protein kinase, protein histidine kinase, protein kinase (histidine), HK1, HP165, Sln1p) is an enzyme that catalyzes the chemical reaction. ATP + protein L-histidine ADP + protein N-phospho-L-histidine.
A polyhistidine-tag, best known by the trademarked name His-tag, is an amino acid motif in proteins that typically consists of at least six histidine (His) residues, often at the N- or C-terminus of the protein. It is also known as a hexa histidine-tag, 6xHis-tag, or His6 tag.
Two-component systems accomplish signal transduction through the phosphorylation of a response regulator (RR) by a histidine kinase (HK). Histidine kinases are typically homodimeric transmembrane proteins containing a histidine phosphotransfer domain and an ATP binding domain, though there are reported examples of histidine kinases in the atypical HWE and HisKA2 families that are not ...
In orthodox two-component signaling, a histidine kinase protein autophosphorylates on a histidine residue in response to an extracellular signal, and the phosphoryl group is subsequently transferred to an aspartate residue on the receiver domain of a response regulator. In phosphorelays, the "hybrid" histidine kinase contains an internal ...
Histidine triad nucleotide-binding protein 1 also known as adenosine 5'-monophosphoramidase is an enzyme that in humans is encoded by the HINT1 gene. [5] [6] HINT1 hydrolyzes purine nucleotide phosphoramidates with a single phosphate group. [7] In addition, functions as scaffolding protein that modulates transcriptional activation. [8]
Histidine-rich glycoprotein (HRG) is a glycoprotein that in humans is encoded by the HRG gene. [ 5 ] [ 6 ] The HRG protein is produced in the liver, and it could also be synthesized by monocytes , macrophages , and megakaryocytes . [ 7 ]
Protein-histidine pros-kinase, an enzyme This page was last edited on 29 December 2019, at 20:00 (UTC). Text is available under the Creative Commons Attribution ...