Involved in light-induced Na+-dependent proton extrusion. Also seems to be involved in CO(2) transport; homologous to CemA from pea chloroplasts; requird for carbon dioxide transport in Synechocystis; amino acid sequence in first source; GenBank D63838
Source
Proc Natl Acad Sci U S A 1996 Apr 30;93(9):4006-10