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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-12601 | |||||||||
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Title | Human Pol Kappa holoenzyme with wt PCNA | |||||||||
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Function / homology | ![]() positive regulation of deoxyribonuclease activity / dinucleotide insertion or deletion binding / PCNA-p21 complex / mitotic telomere maintenance via semi-conservative replication / purine-specific mismatch base pair DNA N-glycosylase activity / positive regulation of DNA-directed DNA polymerase activity / ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ![]() ![]() | |||||||||
![]() | Lancey C / De Biasio A / Hamdan SM | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM structure of human Pol κ bound to DNA and mono-ubiquitylated PCNA. Authors: Claudia Lancey / Muhammad Tehseen / Souvika Bakshi / Matthew Percival / Masateru Takahashi / Mohamed A Sobhy / Vlad S Raducanu / Kerry Blair / Frederick W Muskett / Timothy J Ragan / Ramon ...Authors: Claudia Lancey / Muhammad Tehseen / Souvika Bakshi / Matthew Percival / Masateru Takahashi / Mohamed A Sobhy / Vlad S Raducanu / Kerry Blair / Frederick W Muskett / Timothy J Ragan / Ramon Crehuet / Samir M Hamdan / Alfredo De Biasio / ![]() ![]() ![]() Abstract: Y-family DNA polymerase κ (Pol κ) can replicate damaged DNA templates to rescue stalled replication forks. Access of Pol κ to DNA damage sites is facilitated by its interaction with the ...Y-family DNA polymerase κ (Pol κ) can replicate damaged DNA templates to rescue stalled replication forks. Access of Pol κ to DNA damage sites is facilitated by its interaction with the processivity clamp PCNA and is regulated by PCNA mono-ubiquitylation. Here, we present cryo-EM reconstructions of human Pol κ bound to DNA, an incoming nucleotide, and wild type or mono-ubiquitylated PCNA (Ub-PCNA). In both reconstructions, the internal PIP-box adjacent to the Pol κ Polymerase-Associated Domain (PAD) docks the catalytic core to one PCNA protomer in an angled orientation, bending the DNA exiting the Pol κ active site through PCNA, while Pol κ C-terminal domain containing two Ubiquitin Binding Zinc Fingers (UBZs) is invisible, in agreement with disorder predictions. The ubiquitin moieties are partly flexible and extend radially away from PCNA, with the ubiquitin at the Pol κ-bound protomer appearing more rigid. Activity assays suggest that, when the internal PIP-box interaction is lost, Pol κ is retained on DNA by a secondary interaction between the UBZs and the ubiquitins flexibly conjugated to PCNA. Our data provide a structural basis for the recruitment of a Y-family TLS polymerase to sites of DNA damage. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 6.2 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 21.1 KB 21.1 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 13.7 KB | Display | ![]() |
Images | ![]() | 70.6 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7nv0MC ![]() 7nv1C C: citing same article ( M: atomic model generated by this map |
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Similar structure data | |
EM raw data | ![]() Data size: 4.2 TB Data #1: Multiframe micrographs of human Pol κ complexed with wt PCNA and DNA, collection 1 [micrographs - multiframe] Data #2: Multiframe micrographs of human Pol κ complexed with wt PCNA and DNA, collection 2 [micrographs - multiframe]) |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Voxel size | X=Y=Z: 1.086 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Pol kappa holoenzyme with wt-PCNA
Entire | Name: Pol kappa holoenzyme with wt-PCNA |
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Components |
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-Supramolecule #1: Pol kappa holoenzyme with wt-PCNA
Supramolecule | Name: Pol kappa holoenzyme with wt-PCNA / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4 |
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Molecular weight | Theoretical: 206 KDa |
-Supramolecule #2: Pol kappa holoenzyme
Supramolecule | Name: Pol kappa holoenzyme / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#2 |
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Source (natural) | Organism: ![]() ![]() |
Recombinant expression | Organism: ![]() ![]() ![]() |
-Supramolecule #3: DNA
Supramolecule | Name: DNA / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #3-#4 |
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Source (natural) | Organism: synthetic construct (others) |
Recombinant expression | Organism: synthetic construct (others) |
-Macromolecule #1: DNA polymerase kappa
Macromolecule | Name: DNA polymerase kappa / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: ![]() |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 98.952695 KDa |
Recombinant expression | Organism: ![]() ![]() ![]() |
Sequence | String: MDSTKEKCDS YKDDLLLRMG LNDNKAGMEG LDKEKINKII MEATKGSRFY GNELKKEKQV NQRIENMMQQ KAQITSQQLR KAQLQVDRF AMELEQSRNL SNTIVHIDMD AFYAAVEMRD NPELKDKPIA VGSMSMLSTS NYHARRFGVR AAMPGFIAKR L CPQLIIVP ...String: MDSTKEKCDS YKDDLLLRMG LNDNKAGMEG LDKEKINKII MEATKGSRFY GNELKKEKQV NQRIENMMQQ KAQITSQQLR KAQLQVDRF AMELEQSRNL SNTIVHIDMD AFYAAVEMRD NPELKDKPIA VGSMSMLSTS NYHARRFGVR AAMPGFIAKR L CPQLIIVP PNFDKYRAVS KEVKEILADY DPNFMAMSLD EAYLNITKHL EERQNWPEDK RRYFIKMGSS VENDNPGKEV NK LSEHERS ISPLLFEESP SDVQPPGDPF QVNFEEQNNP QILQNSVVFG TSAQEVVKEI RFRIEQKTTL TASAGIAPNT MLA KVCSDK NKPNGQYQIL PNRQAVMDFI KDLPIRKVSG IGKVTEKMLK ALGIITCTEL YQQRALLSLL FSETSWHYFL HISL GLGST HLTRDGERKS MSVERTFSEI NKAEEQYSLC QELCSELAQD LQKERLKGRT VTIKLKNVNF EVKTRASTVS SVVST AEEI FAIAKELLKT EIDADFPHPL RLRLMGVRIS SFPNEEDRKH QQRSIIGFLQ AGNQALSATE CTLEKTDKDK FVKPLE MSH KKSFFDKKRS ERKWSHQDTF KCEAVNKQSF QTSQPFQVLK KKMNENLEIS ENSDDCQILT CPVCFRAQGC ISLEALN KH VDECLDGPSI SENFKMFSCS HVSATKVNKK ENVPASSLCE KQDYEAHPKI KEISSVDCIA LVDTIDNSSK AESIDALS N KHSKEECSSL PSKSFNIEHC HQNSSSTVSL ENEDVGSFRQ EYRQPYLCEV KTGQALVCPV CNVEQKTSDL TLFNVHVDV CLNKSFIQEL RKDKFNPVNQ PKESSRSTGS SSGVQKAVTR TKRPGLMTKY STSKKIKPNN PKHTLDIFFK |
-Macromolecule #2: Proliferating cell nuclear antigen
Macromolecule | Name: Proliferating cell nuclear antigen / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 29.088061 KDa |
Recombinant expression | Organism: ![]() ![]() ![]() |
Sequence | String: GPHMFEARLV QGSILKKVLE ALKDLINEAC WDISSSGVNL QSMDSSHVSL VQLTLRSEGF DTYRCDRNLA MGVNLTSMSK ILKCAGNED IITLRAEDNA DTLALVFEAP NQEKVSDYEM KLMDLDVEQL GIPEQEYSCV VKMPSGEFAR ICRDLSHIGD A VVISCAKD ...String: GPHMFEARLV QGSILKKVLE ALKDLINEAC WDISSSGVNL QSMDSSHVSL VQLTLRSEGF DTYRCDRNLA MGVNLTSMSK ILKCAGNED IITLRAEDNA DTLALVFEAP NQEKVSDYEM KLMDLDVEQL GIPEQEYSCV VKMPSGEFAR ICRDLSHIGD A VVISCAKD GVKFSASGEL GNGNIKLSQT SNVDKEEEAV TIEMNEPVQL TFALRYLNFF TKATPLSSTV TLSMSADVPL VV EYKIADM GHLKYYLAPK IEDEEGS |
-Macromolecule #3: DNA Primer
Macromolecule | Name: DNA Primer / type: dna / ID: 3 / Number of copies: 1 / Classification: DNA |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 7.665987 KDa |
Sequence | String: (DA)(DG)(DC)(DT)(DA)(DT)(DG)(DA)(DC)(DC) (DA)(DT)(DG)(DA)(DT)(DT)(DA)(DC)(DG)(DA) (DA)(DT)(DT)(DG)(DOC) |
-Macromolecule #4: DNA Template
Macromolecule | Name: DNA Template / type: dna / ID: 4 / Number of copies: 1 / Classification: DNA |
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Source (natural) | Organism: synthetic construct (others) |
Molecular weight | Theoretical: 11.677539 KDa |
Sequence | String: (DC)(DT)(DG)(DC)(DA)(DC)(DG)(DA)(DA)(DT) (DT)(DA)(DA)(DG)(DC)(DA)(DA)(DT)(DT)(DC) (DG)(DT)(DA)(DA)(DT)(DC)(DA)(DT)(DG) (DG)(DT)(DC)(DA)(DT)(DA)(DG)(DC)(DT) |
-Macromolecule #5: THYMIDINE-5'-TRIPHOSPHATE
Macromolecule | Name: THYMIDINE-5'-TRIPHOSPHATE / type: ligand / ID: 5 / Number of copies: 1 / Formula: TTP |
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Molecular weight | Theoretical: 482.168 Da |
Chemical component information | ![]() ChemComp-TTP: |
-Experimental details
-Structure determination
Method | ![]() |
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Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 Component:
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Grid | Model: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: GOLD / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Details: 40 mA | |||||||||||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD![]() |
Specialist optics | Energy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Temperature | Min: 77.0 K / Max: 77.0 K |
Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Digitization - Dimensions - Width: 11520 pixel / Digitization - Dimensions - Height: 8184 pixel / Number grids imaged: 2 / Number real images: 11114 / Average exposure time: 5.0 sec. / Average electron dose: 47.0 e/Å2 / Details: Super resolution mode & AFIS used |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Refinement | Protocol: RIGID BODY FIT |
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Output model | ![]() PDB-7nv0: |