PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7918668-1 1994 Yeast calmodulin binds only three calcium ions in the presence of millimolar concentrations of magnesium due to a defective calcium-binding sequence in its carboxyl terminal domain. Magnesium 95-104 calmodulin Saccharomyces cerevisiae S288C 6-16