Breakdown of the Gram-negative bacterial protein benchmark dataset taken from [11].

None of proteins included here has sequence identity to any other in a same subcellular location.aSee Eqs.36–38 of [2] for the definition about the number of locative proteins, and its relation with the number of different proteins.bOf the 1,392 different proteins, 1,328 have one subcellular location, 64 have two locations, and none have three or more locations.