APOBEC3H structure reveals an unusual mechanism of interaction with duplex RNA.
APOBEC3H structure reveals an unusual mechanism of interaction with duplex RNA.
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DOI:
10.1038/s41467-017-01309-6
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发表时间:
2017-10-18
影响因子:
16.6
通讯作者:
Smith JL
中科院分区:
文献类型:
--
作者:
Bohn JA;Thummar K;York A;Raymond A;Brown WC;Bieniasz PD;Hatziioannou T;Smith JL
The APOBEC3 family of cytidine deaminases cause lethal hypermutation of retroviruses via deamination of newly reverse-transcribed viral DNA. Their ability to bind RNA is essential for virion infiltration and antiviral activity, yet the mechanisms of viral RNA recognition are unknown. By screening naturally occurring, polymorphic, non-human primate APOBEC3H variants for biological and crystallization properties, we obtained a 2.24-Å crystal structure of pig-tailed macaque APOBEC3H with bound RNA. Here, we report that APOBEC3H forms a dimer around a short RNA duplex and, despite the bound RNA, has potent cytidine deaminase activity. The structure reveals an unusual RNA-binding mode in which two APOBEC3H molecules at opposite ends of a seven-base-pair duplex interact extensively with both RNA strands, but form no protein–protein contacts. CLIP-seq analysis revealed that APOBEC3H preferentially binds to sequences in the viral genome predicted to contain duplexes, a property that may facilitate both virion incorporation and catalytic activity. The APOBEC3 family cytidine deaminases with antiviral activity are proteins that catalyze the deamination of newly reverse-transcribed viral DNA. Here the authors present the crystal structure of full-length pig-tailed macaque APOBEC3H with bound RNA, which reveals how the APOBEC3H dimer binds around a short RNA duplex.
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DOI:
10.1107/s0907444911007232
发表时间:
2011-04
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Krissinel E
通讯作者:
Krissinel E
影响因子:
5.6
作者:
Desimmie, Belete A.;Delviks-Frankenberrry, Krista A.;Burdick, Ryan C.;Qi, DongFei;Izumi, Taisuke;Pathak, Vinay K.
通讯作者:
Pathak, Vinay K.
影响因子:
1.6
作者:
DelProposto, James;Majmudar, Chinmay Y.;Brown, William Clay
通讯作者:
Brown, William Clay
DOI:
10.1107/s0907444910026582
发表时间:
2010-11-01
影响因子:
2.2
作者:
Afonine, Pavel V.;Mustyakimov, Marat;Adams, Paul D.
通讯作者:
Adams, Paul D.
影响因子:
5.4
作者:
ENGELMAN, A;CRAIGIE, R
通讯作者:
CRAIGIE, R