title: cDNA clones coding for the beta-subunit of human liver alcohol dehydrogenase have differently sized 3'-non-coding regions.
abstract: Three different size classes of cDNA clones coding for the beta 1-subunit of human alcohol dehydrogenase (ADH) were characterized from a human liver cDNA library. Clones were identified by hybridization with synthetic oligodeoxyribonucleotides. A total of 2530 nucleotides were determined, covering an ADH-coding region of 1122 nucleotides, a preceding 72-nucleotide segment and 3 types of 3'-non-coding region. The coding nucleotide sequence is in full agreement with the amino acid sequence of the beta 1-subunit. Of 8 clones identified, 6 had a short, 213-nucleotide 3'-non-coding region; 1 an intermediate, 590-nucleotide 3'-region; and 1 a long, 1330-nucleotide 3'-region. In addition, 2 unused polyadenylation signals were found. These results suggest that human liver beta-ADH mRNAs occur in several size classes, and that in addition to the consensus sequence AATAAA further signals are important for 3'-end formation.
mesh_terms: D000328:Adult; D000426:Alcohol Dehydrogenase; D000429:Alcohol Oxidoreductases / Q000235:genetics*; D001483:Base Sequence; D003001:Cloning, Molecular; D004247:DNA / Q000378:metabolism*; D004262:DNA Restriction Enzymes / Q000378:metabolism; D006801:Humans; D008099:Liver / Q000201:enzymology*; D009693:Nucleic Acid Hybridization; D010957:Plasmids
chemical_list: D004247:DNA; D000429:Alcohol Oxidoreductases; D000426:Alcohol Dehydrogenase; D004262:DNA Restriction Enzymes