Cited by 25HIV Research and TreatmentUbiquitin and proteasome pathwaysHIV/AIDS drug development and treatment

Dispersed Sites of HIV Vif-Dependent Polyubiquitination in the DNA Deaminase APOBEC3F

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Albin, John S., Anderson, John S., Johnson, Jeffrey R., Harjes, Elena, Matsuo, Hiroshi, Krogan, Nevan J., Harris, Reuben S.·2013·Journal of Molecular Biology

Abstract

APOBEC3F (A3F) and APOBEC3G (A3G) are DNA cytosine deaminases that potently restrict human immunodeficiency virus type 1 replication when the virus is deprived of its accessory protein Vif (virion infectivity factor). Vif counteracts these restriction factors by recruiting A3F and A3G to an E3 ubiquitin (Ub) ligase complex that mediates their polyubiquitination (polyUb) and proteasomal degradation. While previous efforts have identified single amino acid residues in APOBEC3 proteins required for Vif recognition, less is known about the downstream Ub acceptor sites that are targeted. One prior report identified a cluster of polyubiquitinated residues in A3G and proposed an antiparallel model of A3G interaction with the Vif-E3 Ub ligase complex wherein Vif binding at one terminus of A3G orients the opposite terminus for polyUb [Iwatani et al. (2009). Proc. Natl. Acad. Sci. USA, 106, 19539-19544]. To test the generalizability of this model, we carried out a complete mutagenesis of the lysine residues in A3F and used a complementary, unbiased proteomic approach to identify Ub acceptor sites targeted by Vif. Our data indicate that internal lysines are the dominant Ub acceptor sites in both A3F and A3G. In contrast with the proposed antiparallel model, however, we find that the Vif-dependent polyUb of A3F and A3G can occur at multiple acceptor sites dispersed along predicted lysine-enriched surfaces of both the N- and C-terminal deaminase domains. These data suggest an alternative model for binding of APOBEC3 proteins to the Vif-E3 Ub ligase complex and diminish enthusiasm for the amenability of APOBEC3 Ub acceptor sites to therapeutic intervention.

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  • The Vif protein of HIV hijacks CRL5 and binds CBF-b, leading to degradation of A3F and A3G.

    “For instance, the Vif protein of the human immunodeficiency virus (HIV) hijacks CRL5 and binds the cotranscription factor CBF-b leading to degradation of A3F and A3G, proteins that block viral replication.[95][96][97]”

    From Chasing molecular glue degraders: screening approaches (2022) · cites this paper as [95]

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Authors
Albin, J. S., Anderson, J. S., Johnson, J. R., Harjes, E., Matsuo, H., Krogan, N. J., & Harris, R. S.
Affiliations
  • University of Minnesota (US)
  • Gladstone Institutes (US)
Corresponding author
Harris, Reuben S.
Venue
Journal of Molecular Biology
Publisher
Elsevier BV
Published
2013-04
Volume
425
Issue
7
Pages
1172-1182
ISSN
0022-2836 (ISSN-L)
OpenAlex
W2108241502
Cited by
25
References
48
Citations by year
2025: 1 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 2 · 2020: 2 · 2019: 3 · 2018: 2 · 2017: 2 · 2016: 2 · 2014: 6 · 2013: 2
FWCI
1.53
Type
journal article
Language
en
Open access
Locations
  • Journal of Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • University of Minnesota (T32 GM008244)
  • National Institute on Drug Abuse (F30DA026310)
  • National Institute of General Medical Sciences (T32GM008244, P50GM082250, P50GM081879, GM091743, GM-008244, GM081879, GM082250, P01GM091743)
  • National Institute of Allergy and Infectious Diseases (R01AI064046, P01AI090935, P30AI027763)
Topics
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Health Sciences › Medicine › Infectious Diseases › HIV/AIDS drug development and treatment
Keywords
APOBEC3F, APOBEC3G, HIV-1 Vif, polyubiquitination, E3 ubiquitin ligase, antiviral restriction factors, DNA cytosine deaminase, proteasomal degradation
MeSH terms
APOBEC-3G Deaminase, Amino Acid Sequence, Binding Sites, Cytidine Deaminase, Humans, Lysine, Models, Biological, Models, Molecular, Mutation, Protein Binding, Mass Spectrometry, Blotting, Western, HIV-1, Protein Structure, Tertiary, Polyubiquitin, Cytosine Deaminase, vif Gene Products, Human Immunodeficiency Virus, Ubiquitination

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