TY - RPRT TI - Light-driven proton or chloride pumping by halorhodopsin. AU - E Bamberg AU - J Tittor AU - D Oesterhelt PY - 1993 DO - 10.1073/pnas.90.2.639 UR - https://pubmed.ncbi.nlm.nih.gov/8380643/ ID - 8380643 ER -