PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17031969-2 2006 In low ionic strength acetonitrile solutions, diffusion of a positively charged species (Fe(bpy)(3)(2+)) is electrostatically blocked with approximately 100% efficiency by UV light-induced conversion of the neutral surface-bound spiropyran to its protonated merocyanine form (MEH+). acetonitrile 22-34 epoxide hydrolase 1 Homo sapiens 276-279