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Title: The Antiviral and Cancer Genomic DNA Deaminase APOBEC3H Is Regulated by an RNA-Mediated Dimerization Mechanism

Journal Article · · Molecular Cell
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  1. Univ. of Minnesota, Minneapolis, MN (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), Northeastern Collaborative Access Team (NE-CAT); Cornell Univ., Ithaca, NY (United States)

Human APOBEC3H and homologous single-stranded DNA cytosine deaminases are unique to mammals. These DNA-editing enzymes function in innate immunity by restricting the replication of viruses and transposons. APOBEC3H also contributes to cancer mutagenesis. Here, in this paper, we address the fundamental nature of RNA in regulating human APOBEC3H activities. APOBEC3H co-purifies with RNA as an inactive protein, and RNase A treatment enables strong DNA deaminase activity. RNA-binding-defective mutants demonstrate clear separation of function by becoming DNA hypermutators. Biochemical and crystallographic data demonstrate a mechanism in which double-stranded RNA mediates enzyme dimerization. Additionally, APOBEC3H separation-of-function mutants show that RNA binding is required for cytoplasmic localization, packaging into HIV-1 particles, and antiviral activity. Overall, these results support a model in which structured RNA negatively regulates the potentially harmful DNA deamination activity of APOBEC3H while, at the same time, positively regulating its antiviral activity.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
USDOE Office of Science (SC); National Institutes of Health (NIH); Prospect Creek Foundation; University of Minnesota
Grant/Contract Number:
AC02-06CH11357; NIGMS R01-GM118000; NIGMS R35-GM118047; NCI R21-CA206309; T32-HL007062; T32-AI83196; T90-DE022732; NIGMS P41-GM103403; S10 RR029205
OSTI ID:
1432879
Journal Information:
Molecular Cell, Vol. 69, Issue 1; ISSN 1097-2765
Publisher:
Cell Press - ElsevierCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

References (84)

PHENIX: a comprehensive Python-based system for macromolecular structure solution journal January 2010
Long-Term Restriction by APOBEC3F Selects Human Immunodeficiency Virus Type 1 Variants with Restored Vif Function journal October 2010
Promiscuous RNA Binding Ensures Effective Encapsidation of APOBEC3 Proteins by HIV-1 journal January 2015
Different Mutagenic Potential of HIV-1 Restriction Factors APOBEC3G and APOBEC3F Is Determined by Distinct Single-Stranded DNA Scanning Mechanisms journal March 2014
The RNA Exosome Targets the AID Cytidine Deaminase to Both Strands of Transcribed Duplex DNA Substrates journal February 2011
Single-stranded RNA facilitates nucleocapsid: APOBEC3G complex formation journal April 2008
APOBEC3DE Antagonizes Hepatitis B Virus Restriction Factors APOBEC3F and APOBEC3G journal August 2016
Activation-induced cytidine deaminase deaminates deoxycytidine on single-stranded DNA but requires the action of RNase journal March 2003
Restriction of HIV-1 by APOBEC3G is cytidine deaminase-dependent journal May 2009
APOBEC3B is an enzymatic source of mutation in breast cancer journal February 2013
Methylcytosine and Normal Cytosine Deamination by the Foreign DNA Restriction Enzyme APOBEC3A journal August 2012
The Interaction between HIV-1 Gag and APOBEC3G journal August 2004
APOBEC3G DNA deaminase acts processively 3′ → 5′ on single-stranded DNA journal April 2006
High-molecular-mass APOBEC3G complexes restrict Alu retrotransposition journal October 2006
The AID/APOBEC family of nucleic acid mutators journal January 2008
Molecular Mechanisms of Antibody Somatic Hypermutation journal June 2007
Features and development of Coot journal March 2010
Deamination-independent restriction of LINE-1 retrotransposition by APOBEC3H journal September 2017
Re-editing the paradigm of Cytidine (C) to Uridine (U) RNA editing journal October 2014
Antiviral Protein APOBEC3G Localizes to Ribonucleoprotein Complexes Found in P Bodies and Stress Granules journal March 2007
Comparison of Cellular Ribonucleoprotein Complexes Associated with the APOBEC3F and APOBEC3G Antiviral Proteins journal June 2008
The structure of the chromophore within DsRed, a red fluorescent protein from coral journal October 2000
Biochemical Characterization of APOBEC3H Variants: Implications for Their HIV-1 Restriction Activity and mC Modification journal November 2016
Evolution of HIV-1 Isolates that Use a Novel Vif-Independent Mechanism to Resist Restriction by Human APOBEC3G journal June 2008
Polymorphisms and Splice Variants Influence the Antiretroviral Activity of Human APOBEC3H journal October 2008
APOBECs and virus restriction journal May 2015
RNA Editing Enzyme APOBEC1 and Some of Its Homologs Can Act as DNA Mutators journal November 2002
Human and Rhesus APOBEC3D, APOBEC3F, APOBEC3G, and APOBEC3H Demonstrate a Conserved Capacity To Restrict Vif-Deficient HIV-1 journal August 2011
Identification of Amino Acid Residues in APOBEC3G Required for Regulation by Human Immunodeficiency Virus Type 1 Vif and Virion Encapsidation journal January 2007
Mov10 and APOBEC3G Localization to Processing Bodies Is Not Required for Virion Incorporation and Antiviral Activity journal October 2013
Structural basis of RNA recognition and activation by innate immune receptor RIG-I journal September 2011
XDS journal January 2010
The Phyre2 web portal for protein modeling, prediction and analysis journal May 2015
Viral RNA Is Required for the Association of APOBEC3G with Human Immunodeficiency Virus Type 1 Nucleoprotein Complexes journal May 2005
Hypermutation of hepatitis B virus genomes by APOBEC3G, APOBEC3C and APOBEC3H journal May 2008
Intrinsic immunity against retrotransposons by APOBEC cytidine deaminases journal January 2013
Crystal structure of APOBEC3A bound to single-stranded DNA reveals structural basis for cytidine deamination and specificity journal April 2017
The Anti-HIV-1 Editing Enzyme APOBEC3G Binds HIV-1 RNA and Messenger RNAs That Shuttle between Polysomes and Stress Granules journal September 2006
The artiodactyl APOBEC3 innate immune repertoire shows evidence for a multi-functional domain organization that existed in the ancestor of placental mammals journal January 2008
The PKC/NF-κB Signaling Pathway Induces APOBEC3B Expression in Multiple Human Cancers journal September 2015
Polymorphism in Human APOBEC3H Affects a Phenotype Dominant for Subcellular Localization and Antiviral Activity journal June 2011
APOBEC3 Multimerization Correlates with HIV-1 Packaging and Restriction Activity in Living Cells journal March 2014
HIV Restriction Factors and Mechanisms of Evasion journal February 2012
Direct evidence that RNA inhibits APOBEC3G ssDNA cytidine deaminase activity journal September 2011
Sequence and structural determinants of human APOBEC3H deaminase and anti-HIV-1 activities journal January 2015
Enzymatically Active APOBEC3G Is Required for Efficient Inhibition of Human Immunodeficiency Virus Type 1 journal December 2007
Functions, structure, and read-through alternative splicing of feline APOBEC3 genes journal January 2008
HIV-1 competition experiments in humanized mice show that APOBEC3H imposes selective pressure and promotes virus adaptation journal May 2017
The splicing regulator PTBP2 interacts with the cytidine deaminase AID and promotes binding of AID to switch-region DNA journal December 2010
Antiretroelement Activity of APOBEC3H Was Lost Twice in Recent Human Evolution journal September 2008
APOBEC3A, APOBEC3B, and APOBEC3H Haplotype 2 Restrict Human T-Lymphotropic Virus Type 1 journal March 2012
HIV-1 Vif Adaptation to Human APOBEC3H Haplotypes journal October 2013
[20] Processing of X-ray diffraction data collected in oscillation mode book January 1997
Changes in growth properties on passage in tissue culture of viruses derived from infectious molecular clones of HIV-1LAI, HIV-1MAL, and HIV-1ELI journal December 1991
HIV-1 Replication and APOBEC3 Antiviral Activity Are Not Regulated by P Bodies journal August 2012
Rotational order–disorder structure of fluorescent protein FP480 journal August 2009
The rotational order–disorder structure of the reversibly photoswitchable red fluorescent protein rsTagRFP journal December 2013
AID Recognizes Structured DNA for Class Switch Recombination journal August 2017
Natural Polymorphisms in Human APOBEC3H and HIV-1 Vif Combine in Primary T Lymphocytes to Affect Viral G-to-A Mutation Levels and Infectivity journal November 2014
Chromosome Translocation, B Cell Lymphoma, and Activation-Induced Cytidine Deaminase journal January 2013
Specific packaging of APOBEC3G into HIV-1 virions is mediated by the nucleocapsid domain of the gag polyprotein precursor journal October 2004
The DNA Deaminase Activity of Human APOBEC3G Is Required for Ty1, MusD, and Human Immunodeficiency Virus Type 1 Restriction journal March 2008
Improved monomeric red, orange and yellow fluorescent proteins derived from Discosoma sp. red fluorescent protein journal November 2004
APOBEC3A cytidine deaminase induces RNA editing in monocytes and macrophages journal April 2015
Experimental phasing with SHELXC / D / E : combining chain tracing with density modification journal March 2010
Crystal Structure of the DNA Deaminase APOBEC3B Catalytic Domain journal September 2015
Structural basis for targeted DNA cytosine deamination and mutagenesis by APOBEC3A and APOBEC3B journal December 2016
Atomic Force Microscopy Studies Provide Direct Evidence for Dimerization of the HIV Restriction Factor APOBEC3G journal December 2010
Interaction of APOBEC3A with DNA Assessed by Atomic Force Microscopy journal June 2014
Intrinsic host restrictions to HIV-1 and mechanisms of viral escape journal May 2015
The DNA cytosine deaminase APOBEC3H haplotype I likely contributes to breast and lung cancer mutagenesis journal September 2016
Two Regions within the Amino-Terminal Half of APOBEC3G Cooperate To Determine Cytoplasmic Localization journal July 2008
APOBEC3 proteins mediate the clearance of foreign DNA from human cells journal January 2010
Human Apolipoprotein B mRNA-editing Enzyme-catalytic Polypeptide-like 3G (APOBEC3G) Is Incorporated into HIV-1 Virions through Interactions with Viral and Nonviral RNAs journal June 2004
Sole copy of Z2-type human cytidine deaminase APOBEC3H has inhibitory activity against retrotransposons and HIV-1 journal January 2009
Molecular cloning of an apolipoprotein B messenger RNA editing protein journal June 1993
T Cells Contain an RNase-Insensitive Inhibitor of APOBEC3G Deaminase Activity journal September 2007
7SL RNA Mediates Virion Packaging of the Antiviral Cytidine Deaminase APOBEC3G journal December 2007
Interaction with 7SL RNA but Not with HIV-1 Genomic RNA or P Bodies Is Required for APOBEC3F Virion Packaging journal January 2008
Analysis of Human APOBEC3H Haplotypes and Anti-Human Immunodeficiency Virus Type 1 Activity journal January 2011
Human Retroviral Host Restriction Factors APOBEC3G and APOBEC3F Localize to mRNA Processing Bodies journal May 2006
The RNA Binding Specificity of Human APOBEC3 Proteins Resembles That of HIV-1 Nucleocapsid journal August 2016
APOBEC3G Incorporation into Human Immunodeficiency Virus Type 1 Particles journal November 2004
Reduced APOBEC3H Variant Anti-Viral Activities Are Associated with Altered RNA Binding Activities journal July 2012

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A panel of eGFP reporters for single base editing by APOBEC-Cas9 editosome complexes journal January 2019
APOBEC3H Subcellular Localization Determinants Define Zipcode for Targeting HIV-1 for Restriction journal September 2018
Understanding the Structure, Multimerization, Subcellular Localization and mC Selectivity of a Genomic Mutator and Anti-HIV Factor APOBEC3H journal February 2018
APOBEC3A is a prominent cytidine deaminase in breast cancer journal December 2019
Flexibility in Nucleic Acid Binding Is Central to APOBEC3H Antiviral Activity journal October 2019
Epstein–Barr virus BORF2 inhibits cellular APOBEC3B to preserve viral genome integrity journal November 2018
Recurrent Loss of APOBEC3H Activity during Primate Evolution journal June 2018
Structural perspectives on HIV‐1 Vif and APOBEC3 restriction factor interactions journal November 2019
Genetic and mechanistic basis for APOBEC3H alternative splicing, retrovirus restriction, and counteraction by HIV-1 protease journal October 2018
Understanding the structural basis of HIV-1 restriction by the full length double-domain APOBEC3G journal January 2020
APOBEC restriction goes nuclear journal December 2018
Structural basis of chimpanzee APOBEC3H dimerization stabilized by double-stranded RNA journal July 2018