Human immunodeficiency virus reverse transcriptase base misincorporations can promote strand transfer

Human immunodeficiency virus reverse transcriptase base misincorporations can promote strand... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Human immunodeficiency virus reverse transcriptase base misincorporations can promote strand transfer

Loading next page...
 
/lp/springer_journal/human-immunodeficiency-virus-reverse-transcriptase-base-pGayc5mwPR
Publisher
Springer-Verlag
Copyright
Copyright © 2000 by Springer-Verlag/Wien
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050070113
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Archives of VirologySpringer Journals

Published: Jun 1, 2000

There are no references for this article.

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from
Google Scholar,
PubMed
Create lists to
organize your research
Export lists, citations
Read DeepDyve articles
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off