Evolutionary Conservation of PP2A Antagonism and G2/M Cell Cycle Arrest in Maedi-Visna Virus Vif.
Evolutionary Conservation of PP2A Antagonism and G2/M Cell Cycle Arrest in Maedi-Visna Virus Vif.
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DOI:
10.3390/v14081701
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发表时间:
2022-08-01
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影响因子:
--
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中科院分区:
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The canonical function of lentiviral Vif proteins is to counteract the mutagenic potential of APOBEC3 antiviral restriction factors. However, recent studies have discovered that Vif proteins from diverse HIV-1 and simian immunodeficiency virus (SIV) isolates degrade cellular B56 phosphoregulators to remodel the host phosphoproteome and induce G2/M cell cycle arrest. Here, we evaluate the conservation of this activity among non-primate lentiviral Vif proteins using fluorescence-based degradation assays and demonstrate that maedi-visna virus (MVV) Vif efficiently degrades all five B56 family members. Testing an extensive panel of single amino acid substitution mutants revealed that MVV Vif recognizes B56 proteins through a conserved network of electrostatic interactions. Furthermore, experiments using genetic and pharmacologic approaches demonstrate that degradation of B56 proteins requires the cellular cofactor cyclophilin A. Lastly, MVV Vif-mediated depletion of B56 proteins induces a potent G2/M cell cycle arrest phenotype. Therefore, remodeling of the cellular phosphoproteome and induction of G2/M cell cycle arrest are ancient and conserved functions of lentiviral Vif proteins, which suggests that they are advantageous for lentiviral pathogenesis.
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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:
64.8
作者:
Jaeger, Stefanie;Kim, Dong Young;Hultquist, Judd F.;Shindo, Keisuke;LaRue, Rebecca S.;Kwon, Eunju;Li, Ming;Anderson, Brett D.;Yen, Linda;Stanley, David;Mahon, Cathal;Kane, Joshua;Franks-Skiba, Kathy;Cimermancic, Peter;Burlingame, Alma;Sali, Andrej;Craik, Charles S.;Harris, Reuben S.;Gross, John D.;Krogan, Nevan J.
通讯作者:
Krogan, Nevan J.
影响因子:
5.4
作者:
Dove, B;Brooks, G;Hiscox, JA
通讯作者:
Hiscox, JA
DOI:
10.1016/j.bbrc.2019.02.136
发表时间:
2019-04-16
影响因子:
3.1
作者:
Du, Juan;Rui, Yajuan;Yu, Xiao-Fang
通讯作者:
Yu, Xiao-Fang
影响因子:
8
作者:
Roopchand, DE;Lee, JM;Branton, PE
通讯作者:
Branton, PE