PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17397188-5 2007 Removal of Mg2+ from the EF-Tu x EF-Ts complex increased the rate constant of GDP release 2-fold, suggesting a small contribution to nucleotide exchange. Guanosine Diphosphate 78-81 eukaryotic translation elongation factor 1 alpha 1 Homo sapiens 25-30