Orientation of carotenoids in the outer membrane of Synechocystis PCC 6714 (cyanobacteria).
The orientation of outer membrane carotenoids from Synechocystis PCC 6714 and Synechococcus PCC 6307 was studied by linear dichroism spectrophotometry. Uniaxially oriented, tilted outer membrane films revealed a significant linear dichroism after rotating the polarization vector of the incident light beam, indicating a predominant orientation of the carotenoid transition moments perpendicular to the outer membrane plane. Values for the reduced dichroism at the absorbance maxima presented a linear correlation to a function of the tilt angle (sin2 alpha).
Jürgens
U J
UJ
Institut für Biologie II, Mikrobiologie, Albert-Ludwigs-Universität, Freiburg, F.R.G.
Mäntele
W
W
D002338:Carotenoids / Q000737:chemistry*; D002462:Cell Membrane / Q000737:chemistry; D000458:Cyanobacteria / Q000378:metabolism*; D013056:Spectrophotometry, Ultraviolet
D002338:Carotenoids