PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12730688-2 2003 Using transient absorption spectroscopy, it is demonstrated that the primary light reactions in isolated Arabidopsis thaliana cryptochrome-1 involve intraprotein electron transfer from tryptophan and tyrosine residues to the excited flavin adenine dinucleotide cofactor. Flavin-Adenine Dinucleotide 233-260 cryptochrome 1 Arabidopsis thaliana 126-140