Fig. 9: Cartoon representation of cobalamin conformational changes following CarH illumination.
From: Redox driven B12-ligand switch drives CarH photoresponse

Changes shown for a wild type TtCBD and b H132A variant. The redox state of the Co atom is shown in roman numerals. Only the corrin ring structure belonging to each state is shown for ease of visualisation. Supplementary Movie 1 illustrates the proposed conformational changes.