PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 21721047-4 2011 However, the phenylpiperazine linker group was dramatically more mobile in Mcl-1 compared to either Bcl-x(L) or Bcl-2. phenylpiperazine 13-29 BCL2 apoptosis regulator Homo sapiens 112-117