bacteriorhodopsin
Noun
Meaning
bacteriorhodopsin (plural bacteriorhodopsins)
(biochemistry) Any of several related purple photosynthetic proteins, found in halobacteria, that act as proton pumps
Examples
It is similar to and probably originated from bacteriorhodopsin (see below under archaea).
Archaea Halobacteria use the pigment bacteriorhodopsin which acts directly as a proton pump when exposed to light.