Summary:

1.TP0879 is transmembrane hypothetical protein. TP0880 is conserved transmembrane hypothetical protein. TP0881 is the ATP-binding protein.

2. natAB in B.subtilis catalyse ATP-dependent electrogenic Na+ extrusion without mechanistically coupled H+ or K+ uptake. (Extremophiles 1999 May;3(2):113-20 Sequence analysis and functional studies of a chromosomal region of alkaliphilic Bacillus firmus OF4 encoding an ABC-type transporter with similarity of sequence and Na+ exclusion capacity to the Bacillus subtilis NatAB transporter.Wei Y, Guffanti AA, Krulwich TA PMID: 10356997 UI: 99283889)

3. b3486 is the bifunctional protein with the C-terminal membrane domain and N-terminal ATP-binding domain.

4. B0792 is paralogously related to b0793. 2633230 is paralogously related to 2633231.