PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10540391-1 1999 Streptomyces dizinc aminopeptidase (sAP) shows a specific activity of 33.7 nmol min(-1) mg(-1) toward the hydrolysis of the transition-state analogue bis-p-nitrophenylphosphate with a rate constant of k(cat)/K(m)=100 M(-1) s(-1) and a first-order rate enhancement of about 10(10), which is much superior to several Zn chemical models and comparable to some phosphodiesterases. bis(4-nitrophenyl)phosphate 150-176 carboxypeptidase Q Homo sapiens 20-34