PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 9918801-6 1998 Upon mixing of the purified proteins, the preferential formation of heterodimers was detected by: i) coelution in gel filtration chromatography with a shift to a common partition coefficient for both proteins, and ii) the occurrence of fluorescent energy transfer between fluorescein-labeled tyrosinase and rhodamine-labeled TRP1. Fluorescein 272-283 tyrosinase Mus musculus 292-302