title: Nucleoside 5'-triphosphates modified at sugar residues as substrates for calf thymus terminal deoxynucleotidyl transferase and for AMV reverse transcriptase.
abstract: Terminal deoxynucleotidyl transferase from calf thymus and RNA-directed DNA polymerase (reverse transcriptase) from the avian myeloblastosis virus catalyze the incorporation of 3'-amino-2',3'-dideoxynucleoside 5'-triphosphates, as well as some of their 3'-derivatives, 3'-amino-3'-deoxyarabinonucleoside 5'-triphosphates and some other nucleoside 5'-triphosphates modified at sugar residues. After incorporation of the appropriate 5'-mononucleotide residue into the DNA, further chain elongation is blocked. This finding opens up a possibility for selective inhibition of DNA synthesis catalyzed by a certain enzyme.
mesh_terms: D000818:Animals; D009189:Avian Myeloblastosis Virus / Q000201:enzymology; D002384:Catalysis; D002417:Cattle; D004247:DNA / Q000096:biosynthesis; D004253:DNA Nucleotidylexotransferase / Q000037:antagonists & inhibitors / Q000378:metabolism*; D004254:DNA Nucleotidyltransferases / Q000378:metabolism*; D004277:DNA, Single-Stranded / Q000378:metabolism; D009711:Nucleotides / Q000378:metabolism* / Q000494:pharmacology; D012194:RNA-Directed DNA Polymerase / Q000378:metabolism*; D018894:Reverse Transcriptase Inhibitors; D013379:Substrate Specificity; D013698:Templates, Genetic
chemical_list: D004277:DNA, Single-Stranded; D009711:Nucleotides; D018894:Reverse Transcriptase Inhibitors; D004247:DNA; D004254:DNA Nucleotidyltransferases; D004253:DNA Nucleotidylexotransferase; D012194:RNA-Directed DNA Polymerase