PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 14671092-7 2004 Cycloheximide block-and-release experiments clearly demonstrated that even in the presence of enough amounts of the BZLF1 protein, purvalanol A blocked expression of lytic viral proteins at transcription level. purvalanol B 131-141 protein Zta Human gammaherpesvirus 4 116-121