title: Identification of putative endogenous proviral templates for progenitor mink cell focus-forming (MCF) MuLV-related RNAs.
abstract: Murine leukemia virus (MuLV)-related RNAs exhibiting different env deletions are believed to participate in the generation of leukemogenic mink cell focus-forming (MCF) viruses. We have cloned an endogenous MuLV provirus from AKR/J mouse DNA, designated as A-2, which may serve as template for the env-deleted E2 MuLV RNA, expressed in GIX+ mice (D.E. Levy et al., J. Virol. 56, 691-700 (1985]. We have also isolated an endogenous MCF-related DNA, A-1, which shared close sequence homology with the 7.2-kb RNA expressed in AKR mice (F. Laigret et al., J. Virol. 62, 376-386 (1988] and sustained an identical env deletion. The data indicate that putative precursor MCF-related RNAs are transcribed from a heterogenous family of env-deleted endogenous MuLV DNAs.
mesh_terms: D001483:Base Sequence; D004252:DNA Mutational Analysis; D003673:Defective Viruses / Q000235:genetics; D005814:Genes, Viral; D009052:Leukemia Virus, Murine / Q000235:genetics*; D008908:Mink Cell Focus-Inducing Viruses / Q000235:genetics*; D008969:Molecular Sequence Data; D012367:RNA, Viral / Q000235:genetics*; D012194:RNA-Directed DNA Polymerase / Q000235:genetics; D013698:Templates, Genetic; D014759:Viral Envelope Proteins / Q000235:genetics
chemical_list: D012367:RNA, Viral; D014759:Viral Envelope Proteins; D012194:RNA-Directed DNA Polymerase