title: Characterization of a molecular clone of RFM/Un mouse chromosomal DNA that contains a full-length endogenous murine leukaemia virus-related proviral genome.
abstract: A 12.4 kbp HindIII chromosomal DNA fragment harbouring an apparently intact 9.2 kbp endogenous murine leukaemia virus (MuLV)-related proviral genome was isolated from an RFM/Un strain mouse by molecular cloning and designated pRFM #6. Nucleotide sequence analysis revealed the following characteristic features in the pRFM #6 provirus: a distinct 200 bp sequence in the long terminal repeat (LTR) mid-U3 region, a primer binding site for glutamine tRNA, a 3' pol region encoding an 'endonuclease' protein of 390 amino acids, and the mink cell focus-forming virus type-specific sequence at the 5' portion of the env gene. The 699 bp 5' LTR and 700 bp 3' LTR of pRFM #6 provirus were identical except for three base changes in the U3 'enhancer' region. At the cell-provirus DNA junction, 4 bp direct repeats were present. The proviral genome was found at the same chromosomal DNA site in BALB/c, AKR, C3H, CBA and RFM strain mice, but not in NFS/N or C57BL/6 strain mice.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002875:Chromosomes / Q000032:analysis*; D003001:Cloning, Molecular; D004262:DNA Restriction Enzymes; D004274:DNA, Recombinant / Q000378:metabolism; D004279:DNA, Viral / Q000302:isolation & purification; D005814:Genes, Viral; D009052:Leukemia Virus, Murine / Q000235:genetics*; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D014764:Viral Proteins / Q000235:genetics
chemical_list: D004274:DNA, Recombinant; D004279:DNA, Viral; D014764:Viral Proteins; D004262:DNA Restriction Enzymes