Aerobiosis

AAA Domain

An approximately 250 amino acid domain common to AAA ATPases and AAA Proteins. It consists of a highly conserved N-terminal P-Loop ATPase su…

Acetylation

Formation of an acetyl derivative. (Stedman, 25th ed)

Acid-Base Equilibrium

The balance between acids and bases in the BODY FLUIDS. The pH (HYDROGEN-ION CONCENTRATION) of the arterial BLOOD provides an index for the …

Acylation

The addition of an organic acid radical into a molecule.

ADP-Ribosylation

Post-translational modification of proteins with ADENOSINE DIPHOSPHATE RIBOSE.

Agglutination

The clumping together of suspended material resulting from the action of AGGLUTININS.

Alkylation

The covalent bonding of an alkyl group to an organic compound. It can occur by a simple addition reaction or by substitution of another func…

Allosteric Regulation

The modification of the reactivity of ENZYMES by the binding of effectors to sites (ALLOSTERIC SITES) on the enzymes other than the substrat…