Anticodon-like binding of the HIV-1 tRNA-like element to human lysyl-tRNA synthetase.
Anticodon-like binding of the HIV-1 tRNA-like element to human lysyl-tRNA synthetase.
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DOI:
10.1261/rna.058081.116
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发表时间:
2016-12
期刊:
影响因子:
--
通讯作者:
Musier-Forsyth K
中科院分区:
文献类型:
--
作者:
Liu S;Comandur R;Jones CP;Tsang P;Musier-Forsyth K
A critical step in the HIV-1 lifecycle involves reverse transcription of the viral genomic RNA (gRNA). Human tRNALys3 serves as a primer for transcription initiation and is selectively enriched in virus particles. Human lysyl-tRNA synthetase (hLysRS) is also packaged into virions. Recently, a tRNA-like element (TLE) within the HIV-1 gRNA was shown to mimic the global tRNA fold and bind competitively to hLysRS, suggesting a mechanism of tRNA targeting to the primer binding site (PBS) and release from the synthetase. Here, we use NMR to investigate hLysRS anticodon-binding domain (ACB) binding to six RNA oligonucleotides, including a hairpin derived from the HIV-1 gRNA TLE. We show that ACB interacts with submicromolar affinity to U-rich RNA oligonucleotides—the tRNALys3 anticodon stem–loop (ACSL), the WT TLE, and a nonanucleotide, U9. In contrast, the ACB bound only weakly to two TLE loop mutants and a C9 nonanucleotide. NMR chemical shift perturbations induced by each RNA indicate that the ACSL and the WT TLE both interact with the ACB in a strikingly similar manner. Taken together, these findings support the conclusion that tRNA mimicry by the HIV-1 genome leads to a highly specific protein–RNA interaction that facilitates efficient primer release from hLysRS prior to reverse transcription.
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影响因子:
3.5
作者:
Kleiman L;Jones CP;Musier-Forsyth K
通讯作者:
Musier-Forsyth K
影响因子:
4.5
作者:
Jones, Christopher P.;Saadatmand, Jenan;Musier-Forsyth, Karin
通讯作者:
Musier-Forsyth, Karin
影响因子:
16.8
作者:
Murphy, FV;Ramakrishnan, V;Agris, PF
通讯作者:
Agris, PF
影响因子:
4.8
作者:
Francin, M;Kaminska, M;Mirande, M
通讯作者:
Mirande, M
DOI:
10.1007/978-1-4939-2214-7_23
发表时间:
2015-01-01
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
作者:
Rye-McCurdy, Tiffiny;Rouzina, Ioulia;Musier-Forsyth, Karin
通讯作者:
Musier-Forsyth, Karin