1. carboxyl - Noun
2. carboxyl - Adjective
The complex radical, CO.OH, regarded as the essential and characteristic constituent which all oxygen acids of carbon (as formic, acetic, benzoic acids, etc.) have in common; -- called also oxatyl.
Source: Webster's dictionaryAn α-amino acid has a central carbon (the α or alpha carbon ) which is covalently bonded to a carboxyl group (thus they are carboxylic acids ), an amino group, a hydrogen atom and a variable group. Source: Internet
E3 enzymes possess one of two domains : the homologous to the E6-AP carboxyl terminus ( HECT ) domain and the really interesting new gene ( RING ) domain (or the closely related U-box domain). Source: Internet
Each fatty acid has a carboxyl group (–COOH). Source: Internet
A fatty acid is a chain of carbon, oxygen and hydrogen atoms with a carboxyl group on one end. Source: Internet
At physiological pH, typically around 7, free amino acids exist in a charged form, where the acidic carboxyl group (-COOH) loses a proton (-COO − ) and the basic amine group (-NH 2 ) gains a proton (-NH 3 + ). Source: Internet
Calculating pI values For an amino acid with only one amine and one carboxyl group, the pI can be calculated from the mean of the pKas of this molecule. Source: Internet