List of the inorganic compounds and small solutes with their corresponding putative transporters in Bap.

a: number of enzymes in BAp using the cation as a cofactor (from HAMAP project, http://www.expasy.org/sprot/hamap/). Transporters written in italics are hypothetical candidates showing low sequence identity with the well annotated homologous reference in TCDB and/or for which the transported substrate was not known with a high accuracy for the orthologous reference sequence in TCDB (see table 1).