amino group
A functional group that consists of a nitrogen atom bonded to two hydrogen atoms; can act as a base in solution, accepting a hydrogen ion and acquiring a charge of +1.
An amino group (-NH2) is a functional group that consists of a nitrogen atom bonded covalently to two hydrogen atoms. It has a basic nature due to the presence of the lone pair of electrons on the nitrogen atom, which can accept a hydrogen ion (proton). Amino groups are found in many biomolecules such as amino acids, proteins, nucleic acids, and some vitamins. In amino acids, the amino group is one of the two functional groups that determine the chemical properties of the molecule, along with the carboxyl group (-COOH). The presence of amino groups in a molecule can also affect its solubility, as they often make the molecule more hydrophilic (water-loving).
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