REDOX DRIVEN B12-LIGAND SWITCH DRIVES CARH PHOTORESPONSE

Redox driven B12-ligand switch drives CarH photoresponse

Abstract CarH is a coenzyme B12-dependent photoreceptor involved in regulating carotenoid biosynthesis.How light-triggered cleavage of the B12 Co-C bond culminates in CarH tetramer dissociation to initiate transcription remains unclear.Here, chorulon hcg a series of crystal structures of the CarH B12-binding domain after illumination suggest format

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