title: The structure of cloned 3'-terminal RNA region of bovine leukemia virus (BLV).
abstract: cDNA synthesized on the bovine leukemia virus RNA template has been cloned in the pBR322 Pst I site. Colony hybridization with BLV RNA fragments and oligo (dT) has revealed a clone with cDNA insert containing 660 3'-terminal nucleotides of the BLV genome. The nucleotide sequence of the insert corresponding to U3 and R regions of the long terminal repeats (LTR) of viral genome has been determined. BLV U3, like U3 of other retroviruses, presumably contains promoter. The unusually long R region (about 230 bp), a certain homology with ATLV U3-R and some other structural features allow to group BLV LTR together with ATLV LTR in a separate class of retroviral LTR.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D003001:Cloning, Molecular; D004247:DNA / Q000378:metabolism*; D005814:Genes, Viral; D007668:Kidney; D001909:Leukemia Virus, Bovine / Q000235:genetics*; D009693:Nucleic Acid Hybridization; D009876:Operon; D010957:Plasmids; D012367:RNA, Viral / Q000235:genetics*; D012091:Repetitive Sequences, Nucleic Acid; D012190:Retroviridae / Q000235:genetics*; D012756:Sheep; D013698:Templates, Genetic
chemical_list: D012367:RNA, Viral; D004247:DNA