title: Molecular cloning of seal myoglobin mRNA.
abstract: Grey seal skeletal muscle containing high levels of myoglobin was used to prepare poly(A)+ RNA. In vitro translation of this RNA produced a range of polypeptides including myoglobin. cDNA was prepared by reverse transcription of muscle poly(A)+ RNA and cloned into the plasmid pAT 153. 4% of cDNA recombinants were shown to contain myoglobin cDNA inserts. DNA sequence analysis of one clone (pSM 178) which contained a relatively large myoglobin cDNA insert showed an incomplete cDNA comprising the terminal 293 nucleotides of 3' non-translated mRNA sequences. Hybridization experiments using this myoglobin cDNA indicated that seal myoglobin is coded by a single gene which is transcribed to give a 1400 nucleotide mRNA considerably longer than related haemoglobin mRNAs.
mesh_terms: D000818:Animals; D001483:Base Sequence; D010872:Caniformia / Q000235:genetics*; D003001:Cloning, Molecular; D004247:DNA / Q000378:metabolism; D004262:DNA Restriction Enzymes; D004274:DNA, Recombinant / Q000378:metabolism; D009132:Muscles / Q000378:metabolism*; D009211:Myoglobin / Q000235:genetics*; D009693:Nucleic Acid Hybridization; D010957:Plasmids; D011061:Poly A / Q000235:genetics; D014176:Protein Biosynthesis; D012313:RNA / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics*; D046048:Seals, Earless / Q000235:genetics*
chemical_list: D004274:DNA, Recombinant; D009211:Myoglobin; D012333:RNA, Messenger; D011061:Poly A; D012313:RNA; D004247:DNA; D004262:DNA Restriction Enzymes