title: Inhibitory RNA ligand to reverse transcriptase from feline immunodeficiency virus.
abstract: High-affinity, high-specificity RNA ligands for reverse transcriptase from feline immunodeficiency virus (FIV) were isolated from an RNA library by the SELEX (Systematic Evolution of Ligands by EXponential enrichment) procedure. The selected RNA ligands bound to FIV reverse transcriptase with dissociation constants in the nanomolar range. One of the ligands was a potent inhibitor of the RNA-dependent DNA polymerase activity of both the recombinant and the virion-derived FIV reverse transcriptase. It also inhibited the reverse transcriptase from an FIV mutant that is resistant to 3'-azido-3'-deoxythymidine (AZT). The inhibition of FIV reverse transcriptase was competitive with respect to template-primer and noncompetitive with respect to deoxyribonucleoside 5'-triphosphates. This ligand was specific for the FIV enzyme and did not inhibit other reverse transcriptases tested (avian myeloblastosis virus, Moloney murine leukemia virus, and human immunodeficiency virus type 1).
authors.affiliation: Department of Molecular, University of Colorado at Boulder 80309, USA.
authors.forename: H
authors.initials: H
authors.lastname: Chen
authors.forename: D G
authors.initials: DG
authors.lastname: McBroom
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Zhu
authors.forename: L
authors.initials: L
authors.lastname: Gold
authors.forename: T W
authors.initials: TW
authors.lastname: North
mesh_terms: D000818:Animals; D009189:Avian Myeloblastosis Virus / Q000201:enzymology; D001483:Base Sequence; D002415:Cats; D054303:HIV Reverse Transcriptase; D015497:HIV-1 / Q000201:enzymology; D006801:Humans; D016089:Immunodeficiency Virus, Feline / Q000201:enzymology*; D007700:Kinetics; D008024:Ligands; D008969:Molecular Sequence Data; D008979:Moloney murine leukemia virus / Q000201:enzymology; D009690:Nucleic Acid Conformation; D009843:Oligoribonucleotides / Q000737:chemistry / Q000494:pharmacology*; D012313:RNA / Q000737:chemistry / Q000494:pharmacology*; D012194:RNA-Directed DNA Polymerase / Q000378:metabolism*; D011994:Recombinant Proteins / Q000037:antagonists & inhibitors; D012091:Repetitive Sequences, Nucleic Acid; D018894:Reverse Transcriptase Inhibitors / Q000494:pharmacology*; D012680:Sensitivity and Specificity; D013329:Structure-Activity Relationship; D014771:Virion / Q000201:enzymology; D015215:Zidovudine / Q000494:pharmacology
chemical_list: D008024:Ligands; D009843:Oligoribonucleotides; D011994:Recombinant Proteins; D018894:Reverse Transcriptase Inhibitors; D015215:Zidovudine; D012313:RNA; D054303:HIV Reverse Transcriptase; D012194:RNA-Directed DNA Polymerase