title: Human apolipoprotein A-II: complete nucleic acid sequence of preproapo A-II.
abstract: The complete cDNA nucleic acid sequence of preproapolipoprotein (apo) A-II, a major protein constituent of high density lipoproteins, has been determined on clones from a human liver ds-cDNA library. Clones containing ds-cDNA for apoA-II were identified in the human liver ds-cDNA library using synthetic oligonucleotides as probes. Of 3200 clones screened, 4 reacted with the oligonucleotide probes. The DNA sequence coding for amino acids -17 to +17 of apoA-II were determined by Maxam-Gilbert sequence analysis of restriction fragments isolated from one of these clones, pMDB2049. The remainder of the cDNA sequence was established by sequence analysis of a primer extension product synthesized utilizing a restriction fragment near the 5'-end of clone pMDB2049 as primer with total liver mRNA. The apoA-II mRNA encodes for a 100 amino acid protein, preproapoA-II that has an 18 amino acid prepeptide and a 5 amino acid propeptide terminating with a basic dipeptide (Arg-Arg) at the cleavage site to mature apoA-II.
mesh_terms: D000328:Adult; D000595:Amino Acid Sequence; D001054:Apolipoproteins A / Q000235:genetics*; D001483:Base Sequence; D003001:Cloning, Molecular; D004247:DNA / Q000378:metabolism; D004262:DNA Restriction Enzymes; D005260:Female; D005796:Genes; D006801:Humans; D008099:Liver / Q000378:metabolism; D010957:Plasmids; D011498:Protein Precursors / Q000235:genetics*; D012333:RNA, Messenger / Q000235:genetics
chemical_list: D001054:Apolipoproteins A; D011498:Protein Precursors; D012333:RNA, Messenger; C035250:preproapolipoprotein A-I; C039768:preproapolipoprotein A-II; D004247:DNA; D004262:DNA Restriction Enzymes