PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 34451773-7 2021 Heterografts of wildtype scions and sir1-1 rootstocks and vice versa, respectively, demonstrate a dominant role of the shoot over the root with respect to sulfur-related gene expression, sulfate accumulation and organic sulfur metabolites, including the regulatory compound O-acetylserine. O-acetylserine 274-288 co-factor for nitrate, reductase and xanthine dehydrogenase 5 Arabidopsis thaliana 36-40