PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23585572-1 2013 We used site-directed labeling of the type 1 ryanodine receptor (RyR1) and fluorescence resonance energy transfer (FRET) measurements to map RyR1 sequence elements forming the binding site of the 12-kDa binding protein for the immunosuppressant drug, FK506. Tacrolimus 251-256 ryanodine receptor 1 Homo sapiens 141-145