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Yorodumi- EMDB-54921: Cryo-EM structure of the catalytic core of human telomerase at th... -
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Basic information
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| Title | Cryo-EM structure of the catalytic core of human telomerase at the elongation state of the repeat addition cycle | ||||||||||||||||||
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Keywords | telomerase / H/ACA / RNA BINDING PROTEIN | ||||||||||||||||||
| Function / homology | Function and homology informationtelomere assembly / positive regulation of hair cycle / template-free RNA nucleotidyltransferase activity / positive regulation of transdifferentiation / TERT-RMRP complex / DNA strand elongation / RNA-directed RNA polymerase complex / segmentation / siRNA transcription / urogenital system development ...telomere assembly / positive regulation of hair cycle / template-free RNA nucleotidyltransferase activity / positive regulation of transdifferentiation / TERT-RMRP complex / DNA strand elongation / RNA-directed RNA polymerase complex / segmentation / siRNA transcription / urogenital system development / positive regulation of protein localization to nucleolus / telomerase catalytic core complex / protection from non-homologous end joining at telomere / telomerase inhibitor activity / RNA-templated DNA biosynthetic process / establishment of protein localization to telomere / regulation of establishment of protein localization to telomere / telomerase activity / shelterin complex / Telomere C-strand synthesis initiation / Regulation of MITF-M-dependent genes involved in DNA replication, damage repair and senescence / siRNA processing / Telomere C-strand (Lagging Strand) Synthesis / telomere maintenance via recombination / nuclear telomere cap complex / positive regulation of vascular associated smooth muscle cell migration / telomere capping / telomerase holoenzyme complex / Polymerase switching on the C-strand of the telomere / telomerase RNA binding / embryonic limb morphogenesis / Processive synthesis on the C-strand of the telomere / Removal of the Flap Intermediate from the C-strand / DNA biosynthetic process / protein localization to chromosome, telomeric region / RNA-templated transcription / positive regulation of stem cell proliferation / telomeric DNA binding / negative regulation of telomere maintenance via telomerase / positive regulation of telomere maintenance / mitochondrial nucleoid / negative regulation of cellular senescence / replicative senescence / Telomere Extension By Telomerase / negative regulation of extrinsic apoptotic signaling pathway in absence of ligand / positive regulation of G1/S transition of mitotic cell cycle / response to cadmium ion / negative regulation of endothelial cell apoptotic process / positive regulation of Wnt signaling pathway / positive regulation of protein binding / telomere maintenance via telomerase / positive regulation of vascular associated smooth muscle cell proliferation / DNA polymerase binding / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / telomere maintenance / Inhibition of DNA recombination at telomere / Meiotic synapsis / positive regulation of D-glucose import across plasma membrane / skeletal system development / mitochondrion organization / intracellular protein transport / Formation of the beta-catenin:TCF transactivating complex / PML body / regulation of protein stability / positive regulation of miRNA transcription / DNA Damage/Telomere Stress Induced Senescence / RNA-directed DNA polymerase / transcription coactivator binding / RNA-directed DNA polymerase activity / positive regulation of angiogenesis / protein import into nucleus / structural constituent of chromatin / nucleosome / protein-folding chaperone binding / heart development / cellular response to hypoxia / negative regulation of neuron apoptotic process / tRNA binding / chromosome, telomeric region / nuclear speck / nuclear body / protein heterodimerization activity / RNA-directed RNA polymerase activity / protein-containing complex binding / nucleolus / protein homodimerization activity / DNA binding / RNA binding / nucleoplasm / metal ion binding / identical protein binding / nucleus / plasma membrane / cytosol Similarity search - Function | ||||||||||||||||||
| Biological species | Homo sapiens (human) | ||||||||||||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||||||||||||||
Authors | Balch S / Franco-Echevarria E / Ghanim GE / Kretsch RC / Das R / Nguyen THD / Yu H / Sigurdur TR / Ding Y | ||||||||||||||||||
| Funding support | United Kingdom, European Union, United States, 5 items
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Citation | Journal: To Be Published / Year: 2026Title: Structures of nucleotide-bound human telomerase at several steps of its telomeric DNA repeat addition cycle Authors: Balch S / Franco-Echevarria E / Kretsch RC / Ghanim GE / Das R / Nguyen THD | ||||||||||||||||||
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Structure visualization
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_54921.map.gz | 77 MB | EMDB map data format | |
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| Header (meta data) | emd-54921-v30.xml emd-54921.xml | 29 KB 29 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_54921_fsc.xml | 9.9 KB | Display | FSC data file |
| Images | emd_54921.png | 41.8 KB | ||
| Masks | emd_54921_msk_1.map | 83.7 MB | Mask map | |
| Filedesc metadata | emd-54921.cif.gz | 8.8 KB | ||
| Others | emd_54921_half_map_1.map.gz emd_54921_half_map_2.map.gz | 65.3 MB 65.3 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-54921 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-54921 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9shzMC ![]() 9shyC ![]() 9si0C M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_54921.map.gz / Format: CCP4 / Size: 83.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 1.059 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Mask #1
| File | emd_54921_msk_1.map | ||||||||||||
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-Half map: #2
| File | emd_54921_half_map_1.map | ||||||||||||
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-Half map: #1
| File | emd_54921_half_map_2.map | ||||||||||||
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Sample components
-Entire : Cryo-EM structure of the catalytic core of human telomerase at th...
| Entire | Name: Cryo-EM structure of the catalytic core of human telomerase at the elongation state of the repeat addition cycle |
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| Components |
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-Supramolecule #1: Cryo-EM structure of the catalytic core of human telomerase at th...
| Supramolecule | Name: Cryo-EM structure of the catalytic core of human telomerase at the elongation state of the repeat addition cycle type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6 |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 311 KDa |
-Macromolecule #1: Histone H2A
| Macromolecule | Name: Histone H2A / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 14.140584 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: MSGRGKQGGK ARAKAKTRSS RAGLQFPVGR VRRLLRKGNY AERVGAGAPV YLAAVLEYLT AEILELAGNA ARDNKKTRII PRHLQLAIR NDEELNKLLG KVTIAQGGVL PNIQAVLLPK KTESHHKAKG K UniProtKB: Histone H2A |
-Macromolecule #2: Histone H2B
| Macromolecule | Name: Histone H2B / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 18.074932 KDa |
| Sequence | String: MPDPAKSAPA PKKGSKKAVT KVQKKDGKKR KRSRKESYSV YVYKVLKQVH PDTGISSKAM GIMNSFVNDI FERIAGEASR LAHYNKRST ITSREIQTAV RLLLPGELAK HAVSEGTKAV TKYTSSNPRN LSPTKPGGSE DRQPPPSQLS AIPPFCLVLR A GIAGQV UniProtKB: Histone H2B |
-Macromolecule #4: Adrenocortical dysplasia protein homolog
| Macromolecule | Name: Adrenocortical dysplasia protein homolog / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 49.013086 KDa |
| Sequence | String: MAGSGRLVLR PWIRELILGS ETPSSPRAGQ LLEVLQDAEA AVAGPSHAPD TSDVGATLLV SDGTHSVRCL VTREALDTSD WEEKEFGFR GTEGRLLLLQ DCGVHVQVAE GGAPAEFYLQ VDRFSLLPTE QPRLRVPGCN QDLDVQKKLY DCLEEHLSES T SSNAGLSL ...String: MAGSGRLVLR PWIRELILGS ETPSSPRAGQ LLEVLQDAEA AVAGPSHAPD TSDVGATLLV SDGTHSVRCL VTREALDTSD WEEKEFGFR GTEGRLLLLQ DCGVHVQVAE GGAPAEFYLQ VDRFSLLPTE QPRLRVPGCN QDLDVQKKLY DCLEEHLSES T SSNAGLSL SQLLDEMRED QEHQGALVCL AESCLTLEGP CTAPPVTHWA ASRCKATGEA VYTVPSSMLC ISENDQLILS SL GPCQRTQ GPELPPPDPA LQDLSLTLIA SPPSSPSSSG TPALPGHMSS EESGTSISLL PALSLAAPDP GQRSSSQPSP AIC SAPATL TPRSPHASRT PSSPLQSCTP SLSPRSHVPS PHQALVTRPQ KPSLEFKEFV GLPCKNRPPF PRTGATRGAQ EPCS VWEPP KRHRDGSAFQ YEYEPPCTSL CARVQAVRLP PQLMAWALHF LMDAQPGSEP TPM UniProtKB: Adrenocortical dysplasia protein homolog |
-Macromolecule #6: Telomerase reverse transcriptase
| Macromolecule | Name: Telomerase reverse transcriptase / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO / EC number: RNA-directed DNA polymerase |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 127.195812 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: MPRAPRCRAV RSLLRSHYRE VLPLATFVRR LGPQGWRLVQ RGDPAAFRAL VAQCLVCVPW DARPPPAAPS FRQVSCLKEL VARVLQRLC ERGAKNVLAF GFALLDGARG GPPEAFTTSV RSYLPNTVTD ALRGSGAWGL LLRRVGDDVL VHLLARCALF V LVAPSCAY ...String: MPRAPRCRAV RSLLRSHYRE VLPLATFVRR LGPQGWRLVQ RGDPAAFRAL VAQCLVCVPW DARPPPAAPS FRQVSCLKEL VARVLQRLC ERGAKNVLAF GFALLDGARG GPPEAFTTSV RSYLPNTVTD ALRGSGAWGL LLRRVGDDVL VHLLARCALF V LVAPSCAY QVCGPPLYQL GAATQARPPP HASGPRRRLG CERAWNHSVR EAGVPLGLPA PGARRRGGSA SRSLPLPKRP RR GAAPEPE RTPVGQGSWA HPGRTRGPSD RGFCVVSPAR PAEEATSLEG ALSGTRHSHP SVGRQHHAGP PSTSRPPRPW DTP CPPVYA ETKHFLYSSG DKEQLRPSFL LSSLRPSLTG ARRLVETIFL GSRPWMPGTP RRLPRLPQRY WQMRPLFLEL LGNH AQCPY GVLLKTHCPL RAAVTPAAGV CAREKPQGSV AAPEEEDTDP RRLVQLLRQH SSPWQVYGFV RACLRRLVPP GLWGS RHNE RRFLRNTKKF ISLGKHAKLS LQELTWKMSV RDCAWLRRSP GVGCVPAAEH RLREEILAKF LHWLMSVYVV ELLRSF FYV TETTFQKNRL FFYRKSVWSK LQSIGIRQHL KRVQLRELSE AEVRQHREAR PALLTSRLRF IPKPDGLRPI VNMDYVV GA RTFRREKRAE RLTSRVKALF SVLNYERARR PGLLGASVLG LDDIHRAWRT FVLRVRAQDP PPELYFVKVD VTGAYDTI P QDRLTEVIAS IIKPQNTYCV RRYAVVQKAA HGHVRKAFKS HVSTLTDLQP YMRQFVAHLQ ETSPLRDAVV IEQSSSLNE ASSGLFDVFL RFMCHHAVRI RGKSYVQCQG IPQGSILSTL LCSLCYGDME NKLFAGIRRD GLLLRLVDDF LLVTPHLTHA KTFLRTLVR GVPEYGCVVN LRKTVVNFPV EDEALGGTAF VQMPAHGLFP WCGLLLDTRT LEVQSDYSSY ARTSIRASLT F NRGFKAGR NMRRKLFGVL RLKCHSLFLD LQVNSLQTVC TNIYKILLLQ AYRFHACVLQ LPFHQQVWKN PTFFLRVISD TA SLCYSIL KAKNAGMSLG AKGAAGPLPS EAVQWLCHQA FLLKLTRHRV TYVPLLGSLR TAQTQLSRKL PGTTLTALEA AAN PALPSD FKTILD UniProtKB: Telomerase reverse transcriptase |
-Macromolecule #3: DNA (5'-D(P*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*G)-3')
| Macromolecule | Name: DNA (5'-D(P*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*G)-3') / type: dna / ID: 3 / Number of copies: 1 / Classification: DNA |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 9.501092 KDa |
| Sequence | String: (DT)(DT)(DA)(DG)(DG)(DG)(DT)(DT)(DA)(DG) (DG)(DG)(DT)(DT)(DA)(DG)(DG)(DG)(DT)(DT) (DA)(DG)(DG)(DG)(DT)(DT)(DA)(DG)(DG) (DG) |
-Macromolecule #5: hTR, human telomerase RNA
| Macromolecule | Name: hTR, human telomerase RNA / type: rna / ID: 5 / Number of copies: 1 |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 145.477797 KDa |
| Sequence | String: GGGUUGCGGA GGGUGGGCCU GGGAGGGGUG GUGGCCAUUU UUUGUCUAAC CCUAACUGAG AAGGGCGUAG GCGCCGUGCU UUUGCUCCC CGCGCGCUGU UUUUCUCGCU GACUUUCAGC GGGCGGAAAA GCCUCGGCCU GCCGCCUUCC ACCGUUCAUU C UAGAGCAA ...String: GGGUUGCGGA GGGUGGGCCU GGGAGGGGUG GUGGCCAUUU UUUGUCUAAC CCUAACUGAG AAGGGCGUAG GCGCCGUGCU UUUGCUCCC CGCGCGCUGU UUUUCUCGCU GACUUUCAGC GGGCGGAAAA GCCUCGGCCU GCCGCCUUCC ACCGUUCAUU C UAGAGCAA ACAAAAAAUG UCAGCUGCUG GCCCGUUCGC CCCUCCCGGG GACCUGCGGC GGGUCGCCUG CCCAGCCCCC GA ACCCCGC CUGGAGGCCG CGGUCGGCCC GGGGCUUCUC CGGAGGCACC CACUGCCACC GCGAAGAGUU GGGCUCUGUC AGC CGCGGG UCUCUCGGGG GCGAGGGCGA GGUUCAGGCC UUUCAGGCCG CAGGAAGAGG AACGGAGCGA GUCCCCGCGC GCGG CGCGA UUCCCUGAGC UGUGGGACGU GCACCCAGGA CUCGGCUCAC ACAUGC GENBANK: GENBANK: U85256.1 |
-Macromolecule #7: 1-{2-deoxy-5-O-[(R)-hydroxy{[(S)-hydroxy(phosphonooxy)phosphoryl]...
| Macromolecule | Name: 1-{2-deoxy-5-O-[(R)-hydroxy{[(S)-hydroxy(phosphonooxy)phosphoryl]methyl}phosphoryl]-beta-D-threo-pentofuranosyl}-5-methylpyrimidine-2,4(1H,3H)-dione type: ligand / ID: 7 / Number of copies: 1 / Formula: A1ACD |
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| Molecular weight | Theoretical: 480.195 Da |
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Buffer | pH: 8 Component:
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| Grid | Model: C-flat / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Support film - Film thickness: 5 | |||||||||||||||||||||
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Temperature | Min: 78.0 K |
| Specialist optics | Energy filter - Name: GIF Quantum LS / Energy filter - Slit width: 20 eV |
| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Number real images: 56415 / Average exposure time: 2.5 sec. / Average electron dose: 48.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | C2 aperture diameter: 50.0 µm / Calibrated magnification: 45872 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.4 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 81000 |
| Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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About Yorodumi



Keywords
Homo sapiens (human)
Authors
United Kingdom, European Union,
United States, 5 items
Citation









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Processing
FIELD EMISSION GUN


