PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 8241094-1 1993 Apolipoprotein B-100 (apoB-100) appears in three forms in the endoplasmic reticulum of Hep G2 cells: (1) tightly bound to the membrane, ie, not extractable by sodium carbonate. sodium carbonate 159-175 apolipoprotein B Homo sapiens 0-20 1315773-12 1992 Sixty-five percent of pulse-labeled apoB nascent polypeptides present in the microsomal fraction was released by sodium carbonate treatment, and 77% of these polypeptides could be recovered on the immature particles (banding between HDL and LDL) after sucrose gradient ultracentrifugation. sodium carbonate 113-129 apolipoprotein B Homo sapiens 36-40