caa a22 4500 475765680 CHVBK 20180406123604.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1007/s007050070113 doi (NATIONALLICENCE)springer-10.1007/s007050070113 Human immunodeficiency virus reverse transcriptase base misincorporations can promote strand transfer [Elektronische Daten] [L. Diaz, J. V. Cristofaro, J. J. DeStefano] Summary.:  A system to determine if HIV-reverse transcriptase (RT) base misincorporations can promote strand transfer was constructed. A donor RNA, on which RT-directed DNA synthesis was initiated, shared homology over a 119 base internal region with an acceptor RNA, to which DNAs initiated on the donor could transfer. Products completed on the donor in the presence or absence of acceptor were isolated and PCR was used to amplify these DNAs. PCR products were ligated into a vector which had this same region (near the N-terminus of the α-lac gene) removed. Transformed E. coli were screened in an α-complementation assay by blue-white phenotype analysis with white colonies scored as those with errors in plasmid-derived α-lac. The frequence of white colonies +/− standard deviations was 0.031 +/− 0.006 and 0.0037 +/− 0.009, for plasmids with inserts derived from donor-directed products synthesized with 100 μM dNTPs in the presence and absence of acceptor template, respectively. Statistical analysis indicated a lower white colony frequency in the presence of acceptor (p = 0.0025). The lower frequency with acceptor implies that a portion of the errors made on the donor are transferred to the acceptor suggesting that base misincorporations can induce strand transfer. Springer-Verlag/Wien, 2000 Diaz L. Department of Cell Biology and Molecular Genetics, University of Maryland College Park, College Park, Maryland, USA aut Cristofaro J. V. Department of Cell Biology and Molecular Genetics, University of Maryland College Park, College Park, Maryland, USA aut DeStefano J. J. Department of Cell Biology and Molecular Genetics, University of Maryland College Park, College Park, Maryland, USA aut https://doi.org/10.1007/s007050070113 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s007050070113 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Diaz L. Department of Cell Biology and Molecular Genetics, University of Maryland College Park, College Park, Maryland, USA aut NATIONALLICENCE 700 1- Cristofaro J. V. Department of Cell Biology and Molecular Genetics, University of Maryland College Park, College Park, Maryland, USA aut NATIONALLICENCE 700 1- DeStefano J. J. Department of Cell Biology and Molecular Genetics, University of Maryland College Park, College Park, Maryland, USA aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer