PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2394752-4 1990 32P-Labeled rat retina phosducin was isolated by immunoprecipitation either after phosphorylation by protein kinase A in the presence of [gamma-32P]ATP or after incubation of retinas in darkness with 32Pi. 32pi 200-204 phosducin Bos taurus 23-32