Allosteric regulation of HIV-1 reverse transcriptase by ATP for nucleotide selection.
BACKGROUND: Human immunodeficiency virus type 1 reverse transcriptase (HIV-1 RT) is a DNA polymerase that converts viral RNA genomes into proviral DNAs. How HIV-1 RT regulates nucleotide selectivity is a central issue for genetics and the nucleoside analog RT inhibitor (NRTI) resistance of HIV-1. ME...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2010-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC2810339?pdf=render |
| _version_ | 1828871406449852416 |
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| author | Masaru Yokoyama Hiromi Mori Hironori Sato |
| author_facet | Masaru Yokoyama Hiromi Mori Hironori Sato |
| author_sort | Masaru Yokoyama |
| collection | DOAJ |
| description | BACKGROUND: Human immunodeficiency virus type 1 reverse transcriptase (HIV-1 RT) is a DNA polymerase that converts viral RNA genomes into proviral DNAs. How HIV-1 RT regulates nucleotide selectivity is a central issue for genetics and the nucleoside analog RT inhibitor (NRTI) resistance of HIV-1. METHODOLOGY/PRINCIPAL FINDINGS: Here we show that an ATP molecule at physiological concentrations acts as an allosteric regulator of HIV-1 RT to decrease the K(m) value of the substrate, decrease the k(cat) value, and increase the K(i) value of NRTIs for RT. Computer-assisted structural analyses and mutagenesis studies suggested the positions of the ATP molecule and NRTI-resistance mutations during a catalytic reaction, which immediately predict possible influences on nucleotide insertion into the catalytic site, the DNA polymerization, and the excision reaction. CONCLUSIONS/SIGNIFICANCE: These data imply that the ATP molecule and NRTI mutations can modulate nucleotide selectivity by altering the fidelity of the geometric selection of nucleotides and the probability of an excision reaction. |
| first_indexed | 2024-12-13T06:31:11Z |
| format | Article |
| id | doaj.art-ce48c31d2a8b498fb8a4d02f43f61204 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-13T06:31:11Z |
| publishDate | 2010-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-ce48c31d2a8b498fb8a4d02f43f612042022-12-21T23:56:36ZengPublic Library of Science (PLoS)PLoS ONE1932-62032010-01-0151e886710.1371/journal.pone.0008867Allosteric regulation of HIV-1 reverse transcriptase by ATP for nucleotide selection.Masaru YokoyamaHiromi MoriHironori SatoBACKGROUND: Human immunodeficiency virus type 1 reverse transcriptase (HIV-1 RT) is a DNA polymerase that converts viral RNA genomes into proviral DNAs. How HIV-1 RT regulates nucleotide selectivity is a central issue for genetics and the nucleoside analog RT inhibitor (NRTI) resistance of HIV-1. METHODOLOGY/PRINCIPAL FINDINGS: Here we show that an ATP molecule at physiological concentrations acts as an allosteric regulator of HIV-1 RT to decrease the K(m) value of the substrate, decrease the k(cat) value, and increase the K(i) value of NRTIs for RT. Computer-assisted structural analyses and mutagenesis studies suggested the positions of the ATP molecule and NRTI-resistance mutations during a catalytic reaction, which immediately predict possible influences on nucleotide insertion into the catalytic site, the DNA polymerization, and the excision reaction. CONCLUSIONS/SIGNIFICANCE: These data imply that the ATP molecule and NRTI mutations can modulate nucleotide selectivity by altering the fidelity of the geometric selection of nucleotides and the probability of an excision reaction.http://europepmc.org/articles/PMC2810339?pdf=render |
| spellingShingle | Masaru Yokoyama Hiromi Mori Hironori Sato Allosteric regulation of HIV-1 reverse transcriptase by ATP for nucleotide selection. PLoS ONE |
| title | Allosteric regulation of HIV-1 reverse transcriptase by ATP for nucleotide selection. |
| title_full | Allosteric regulation of HIV-1 reverse transcriptase by ATP for nucleotide selection. |
| title_fullStr | Allosteric regulation of HIV-1 reverse transcriptase by ATP for nucleotide selection. |
| title_full_unstemmed | Allosteric regulation of HIV-1 reverse transcriptase by ATP for nucleotide selection. |
| title_short | Allosteric regulation of HIV-1 reverse transcriptase by ATP for nucleotide selection. |
| title_sort | allosteric regulation of hiv 1 reverse transcriptase by atp for nucleotide selection |
| url | http://europepmc.org/articles/PMC2810339?pdf=render |
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