PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20181752-6 2010 In contrast, the regulation of the zinc transporters ZRT/IRT-LIKE PROTEIN2 (ZIP2), ZIP3, ZIP4, and ZIP9 was dependent on the cellular zinc level, and their regulation by Fe was a secondary effect. Iron 170-172 ZIP metal ion transporter family Arabidopsis thaliana 99-103