PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15086813-7 2004 Citrate synthase (CS) and malate dehydrogenase (MDH) enzyme activities increased substantially during ripening, as did citrate and malate contents. malic acid 26-32 malate dehydrogenase 2, NAD (mitochondrial) Mus musculus 48-51