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- EMDB-27875: Full-length APOBEC3G in complex with HIV-1 Vif, CBF-beta, and fork RNA -
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Open data
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Basic information
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Title | Full-length APOBEC3G in complex with HIV-1 Vif, CBF-beta, and fork RNA | |||||||||
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![]() | Viral protein - human protein complex / ribonucleoprotein complex / VIRAL PROTEIN-RNA complex | |||||||||
Function / homology | ![]() : / RUNX3 regulates RUNX1-mediated transcription / RUNX1 regulates transcription of genes involved in BCR signaling / cytidine deamination / RUNX1 regulates transcription of genes involved in interleukin signaling / RUNX2 regulates bone development / core-binding factor complex / RUNX1 regulates expression of components of tight junctions / positive regulation of CD8-positive, alpha-beta T cell differentiation / RUNX2 regulates chondrocyte maturation ...: / RUNX3 regulates RUNX1-mediated transcription / RUNX1 regulates transcription of genes involved in BCR signaling / cytidine deamination / RUNX1 regulates transcription of genes involved in interleukin signaling / RUNX2 regulates bone development / core-binding factor complex / RUNX1 regulates expression of components of tight junctions / positive regulation of CD8-positive, alpha-beta T cell differentiation / RUNX2 regulates chondrocyte maturation / single-stranded DNA cytosine deaminase / negative regulation of CD4-positive, alpha-beta T cell differentiation / DNA cytosine deamination / : / lymphocyte differentiation / cytidine to uridine editing / cytidine deaminase activity / RUNX1 and FOXP3 control the development of regulatory T lymphocytes (Tregs) / negative regulation of single stranded viral RNA replication via double stranded DNA intermediate / : / RUNX2 regulates genes involved in cell migration / RUNX2 regulates genes involved in differentiation of myeloid cells / Transcriptional regulation by RUNX2 / RUNX1 regulates transcription of genes involved in differentiation of keratinocytes / myeloid cell differentiation / RUNX3 Regulates Immune Response and Cell Migration / definitive hemopoiesis / RUNX1 regulates transcription of genes involved in differentiation of myeloid cells / Regulation of RUNX1 Expression and Activity / RUNX1 regulates transcription of genes involved in WNT signaling / RUNX1 regulates estrogen receptor mediated transcription / RUNX1 interacts with co-factors whose precise effect on RUNX1 targets is not known / RUNX2 regulates osteoblast differentiation / RUNX3 regulates p14-ARF / cell maturation / viral life cycle / virion component / Regulation of RUNX3 expression and activity / P-body / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Transcriptional regulation of granulopoiesis / osteoblast differentiation / protein polyubiquitination / Regulation of RUNX2 expression and activity / RUNX1 regulates transcription of genes involved in differentiation of HSCs / defense response to virus / Estrogen-dependent gene expression / sequence-specific DNA binding / host cell cytoplasm / transcription by RNA polymerase II / transcription coactivator activity / ribonucleoprotein complex / innate immune response / regulation of transcription by RNA polymerase II / host cell plasma membrane / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / RNA binding / zinc ion binding / nucleoplasm / membrane / nucleus / plasma membrane / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.57 Å | |||||||||
![]() | Ito F / Alvarez-Cabrera AL / Liu S / Yang H / Shiriaeva A / Zhou ZH / Chen XS | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis for HIV-1 antagonism of host APOBEC3G via Cullin E3 ligase. Authors: Fumiaki Ito / Ana L Alvarez-Cabrera / Shiheng Liu / Hanjing Yang / Anna Shiriaeva / Z Hong Zhou / Xiaojiang S Chen / ![]() Abstract: Human APOBEC3G (A3G) is a virus restriction factor that inhibits HIV-1 replication and triggers lethal hypermutation on viral reverse transcripts. HIV-1 viral infectivity factor (Vif) breaches this ...Human APOBEC3G (A3G) is a virus restriction factor that inhibits HIV-1 replication and triggers lethal hypermutation on viral reverse transcripts. HIV-1 viral infectivity factor (Vif) breaches this host A3G immunity by hijacking a cellular E3 ubiquitin ligase complex to target A3G for ubiquitination and degradation. The molecular mechanism of A3G targeting by Vif-E3 ligase is unknown, limiting the antiviral efforts targeting this host-pathogen interaction crucial for HIV-1 infection. Here, we report the cryo-electron microscopy structures of A3G bound to HIV-1 Vif in complex with T cell transcription cofactor CBF-β and multiple components of the Cullin-5 RING E3 ubiquitin ligase. The structures reveal unexpected RNA-mediated interactions of Vif with A3G primarily through A3G's noncatalytic domain, while A3G's catalytic domain is poised for ubiquitin transfer. These structures elucidate the molecular mechanism by which HIV-1 Vif hijacks the host ubiquitin ligase to specifically target A3G to establish infection and offer structural information for the rational development of antiretroviral therapeutics. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 108.2 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 19.4 KB 19.4 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 12.7 KB | Display | ![]() |
Images | ![]() | 69.1 KB | ||
Filedesc metadata | ![]() | 6.3 KB | ||
Others | ![]() ![]() | 200.4 MB 200.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 716.2 KB | Display | ![]() |
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Full document | ![]() | 715.8 KB | Display | |
Data in XML | ![]() | 21.4 KB | Display | |
Data in CIF | ![]() | 27.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8e40MC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||
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Voxel size | X=Y=Z: 0.92 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_27875_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_27875_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Complex of APOBEC3G with HIV-1 Vif and CBF-beta bound to fork RNA
Entire | Name: Complex of APOBEC3G with HIV-1 Vif and CBF-beta bound to fork RNA |
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Components |
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-Supramolecule #1: Complex of APOBEC3G with HIV-1 Vif and CBF-beta bound to fork RNA
Supramolecule | Name: Complex of APOBEC3G with HIV-1 Vif and CBF-beta bound to fork RNA type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 99 KDa |
-Macromolecule #1: DNA dC->dU-editing enzyme APOBEC-3G
Macromolecule | Name: DNA dC->dU-editing enzyme APOBEC-3G / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: single-stranded DNA cytosine deaminase |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 45.18743 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GPGGSGGMKP QIRNMVEPMD PRTFVSNFNN RPILSGLDTV WLCCEVKTKD PSGPPLDAKI FQGKVYPKAK YHPEMRFLRW FHKWRQLHH DQEYKVTWYV SWSPCTRCAN SVATFLAKDP KVTLTIFVAR LYYFWDPDYQ QALRILAEAG ATMKIMNYNE F QDCWNKFV ...String: GPGGSGGMKP QIRNMVEPMD PRTFVSNFNN RPILSGLDTV WLCCEVKTKD PSGPPLDAKI FQGKVYPKAK YHPEMRFLRW FHKWRQLHH DQEYKVTWYV SWSPCTRCAN SVATFLAKDP KVTLTIFVAR LYYFWDPDYQ QALRILAEAG ATMKIMNYNE F QDCWNKFV DGRGKPFKPW NNLPKHYTLL QATLGELLRH LMDPGTFTSN FNNKPWVSGQ HETYLCYKVE RLHNDTWVPL NQ HRGFLRN QAPNIHGFPK GRHAQLCFLD LIPFWKLDGQ QYRVTCFTSW SPCFSCAQEM AKFISNNEHV SLCIFAARIY DDQ GRYQEG LRTLHRDGAK IAMMNYSEFE YCWDTFVDRQ GRPFQPWDGL DEHSQALSGR LRAILQNQGN UniProtKB: DNA dC->dU-editing enzyme APOBEC-3G |
-Macromolecule #2: Virion infectivity factor
Macromolecule | Name: Virion infectivity factor / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 21.136408 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: GPMENRWQVM IVWQVDRMRI NTWKRLVKHH MYISRKAKDW FYRHHYESTN PKISSEVHIP LGDAKLVITT YWGLHTGERD WHLGQGVSI EWRKKRYSTQ VDPDLADQLI HLHYFDCFSE SAIRNTILGR IVSPRCEYQA GHNKVGSLQY LALAALIKPK Q IKPPLPSV RKLTEDRWNK UniProtKB: Virion infectivity factor |
-Macromolecule #3: Core-binding factor subunit beta
Macromolecule | Name: Core-binding factor subunit beta / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 18.643814 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MPRVVPDQRS KFENEEFFRK LSRECEIKYT GFRDRPHEER QARFQNACRD GRSEIAFVAT GTNLSLQFFP ASWQGEQRQT PSREYVDLE REAGKVYLKA PMILNGVCVI WKGWIDLQRL DGMGCLEFDE ERAQQEDALA QQAFEEARRR TREFEDRD UniProtKB: Core-binding factor subunit beta |
-Macromolecule #4: RNA
Macromolecule | Name: RNA / type: rna / ID: 4 / Number of copies: 1 |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 6.875011 KDa |
Sequence | String: UUUUUUUUUU UUUUAAAAAA AA |
-Macromolecule #5: RNA
Macromolecule | Name: RNA / type: rna / ID: 5 / Number of copies: 1 |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 8.00087 KDa |
Sequence | String: UUUUUUUUAA AAAAAAAAAA AAAAA |
-Macromolecule #6: ZINC ION
Macromolecule | Name: ZINC ION / type: ligand / ID: 6 / Number of copies: 2 / Formula: ZN |
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Molecular weight | Theoretical: 65.409 Da |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.15 mg/mL |
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Buffer | pH: 7.5 |
Grid | Model: Quantifoil |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | TFS GLACIOS |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Number grids imaged: 1 / Number real images: 11803 / Average exposure time: 8.0 sec. / Average electron dose: 40.0 e/Å2 |
Electron beam | Acceleration voltage: 200 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.0 mm / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.2 µm / Nominal magnification: 150000 |