We wish to improve (make more informative and consistent) the nomenclature used in FlyBase for the 4 genes encoding subunits of the Drosophila succinyl-coenzyme A synthetase. The current FlyBase nomenclature for these genes is: Scsα, Succinyl-coenzyme A synthetase α subunit (FBgn0004888) CG6255 (FBgn0038708) (this is a second gene encoding the alpha subunit) skap, skpA associated protein (FBgn0037643) (this is the ADP-forming beta subunit) Sucb, Succinyl coenzyme A synthetase GDP-forming beta subunit (FBgn0029118) We propose the following systematic nomenclature be adopted, standardizing with the ‘Scs’ prefix (which is also an generally accepted abbreviation for the enzyme): Scsα => Scsα1, Succinyl-coenzyme A synthetase α subunit 1 CG6255 => Scsα2, Succinyl-coenzyme A synthetase α subunit 2 skap => ScsβA, Succinyl-coenzyme A synthetase β subunit, ADP-forming Sucb => ScsβG, Succinyl-coenzyme A synthetase β subunit, GDP-forming