PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6830817-11 1983 Moreover, it is shown that only fumarase tetramers with all four subunits nitrated are unable to bind to a Sepharose-pyromellitic acid affinity column. Sepharose 107-116 fumarate hydratase Sus scrofa 32-40 24234228-5 1982 The slight differences observed when fumarase is immobilized at concentrations higher than 50 [Symbol: see text]g/g gel must be attributed to diffusional limitation at the surface of the Sepharose matrix. Sepharose 187-196 fumarate hydratase Sus scrofa 37-45