PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 15271357-6 2004 Based on this finding, a mechanism of keto-enol tautomerization of GA catalyzed by HSP90 is proposed. keto-enol 38-47 heat shock protein 90 alpha family class A member 1 Homo sapiens 83-88