the main findings are ( a ) loss of the excitonic interaction among the chromophoric retinal transitions indicating disordering of the retinal orientations in the membrane and distortions of the membrane hexagonal crystal lattice , ( b ) structural change of the chromophoric retinal , ( c ) changes in the key interactions between the retinal and specific groups in the local environment of the apoprotein , ( d ) significant changes of the tertiary structure of the br with negligible secondary structure involvement , and ( e ) a net tilting of the rodlike segments of the br polypeptides away from the membrane normal .
C0035309
disordering
C0035298
retinal