PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20123702-8 2010 In presence of Ca(2+), the activated LCp cleaves inositol 1,4,5-trisphosphate receptor-1 (IP(3)R1) in the ER lumen, whereas the activated MCp cleaves Na(+)/Ca(2+) exchanger-1 (NCX1) in the ER membrane. Perchloric Acid 37-40 membrane cofactor protein Bos taurus 138-141