PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7654712-11 1995 Burst kinetics was observed with Stp1 using p-nitrophenyl phosphate as a substrate, suggesting that the rate-limiting step corresponds to the decomposition of the phosphoenzyme intermediate. nitrophenylphosphate 44-67 Stp1p Saccharomyces cerevisiae S288C 33-37