Search results
Results from the WOW.Com Content Network
^a CID 71083 from PubChem (D-histidine) ^a CID 6274 from PubChem (L-histidine) This page was last edited on 12 April 2023, at 11:40 (UTC). Text is ...
For histidine, it has been experimentally determined by 15 N NMR spectroscopy that the 1-H tautomer is preferred over the 3-H form in samples. [11] Choice of representation for storage in a database can influence substucture searches. All six drawings are hits for a propanol substructure C–C–C–O, as shown in red.
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 ...
From the “File” menu, choose “Apply document settings from → ACS Document 1996”. Draw the structure, and save it as a ChemDraw file. If you drew the structure before applying any settings, then you need to select the object, open the “Object” menu and choose “Apply document settings from → ACS Document 1996”.
Histidine: Structure needs to show stereochemistry; Medroxyprogesterone acetate: Redirects to Medroxyprogesterone; Veratridine: still to be verified, the structure displays badly in ChemFileBrowser; Sodium lactate: old-style chembox; note that CASRN is for unspecified stereochemistry
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.
This allows purification of proteins containing a tag consisting of six histidine residues at either terminus. [11] The His-tag binds the metal of metal chelator complexes. Previously, iminodiacetic acid was used for that purpose. Now, nitrilotriacetic acid is more commonly used. [12]
Histidine ammonia-lyase is a cytosolic enzyme catalyzing the first reaction in histidine catabolism, the nonoxidative deamination of L-histidine to trans-urocanic acid. [5] The reaction is catalyzed by 3,5-dihydro-5-methyldiene-4 H -imidazol-4-one (MIO), an electrophilic cofactor which is formed autocatalytically by cyclization of the protein ...