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Yorodumi- EMDB-53004: Structure of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S) -
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Basic information
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| Title | Structure of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S) | |||||||||
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Keywords | integrated stress response / complex / translation initiation / guanine exchange factor / TRANSLATION | |||||||||
| Function / homology | Function and homology informationtranslation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot / HRI-mediated signaling / eukaryotic translation initiation factor 2B complex / response to manganese-induced endoplasmic reticulum stress / Cellular response to mitochondrial stress / positive regulation of type B pancreatic cell apoptotic process / Response of EIF2AK1 (HRI) to heme deficiency / Recycling of eIF2:GDP ...translation initiation ternary complex / regulation of translation in response to endoplasmic reticulum stress / glial limiting end-foot / HRI-mediated signaling / eukaryotic translation initiation factor 2B complex / response to manganese-induced endoplasmic reticulum stress / Cellular response to mitochondrial stress / positive regulation of type B pancreatic cell apoptotic process / Response of EIF2AK1 (HRI) to heme deficiency / Recycling of eIF2:GDP / negative regulation of translational initiation in response to stress / PERK-mediated unfolded protein response / PERK regulates gene expression / response to kainic acid / eukaryotic translation initiation factor 2 complex / regulation of translational initiation in response to stress / astrocyte development / astrocyte differentiation / eukaryotic 48S preinitiation complex / oligodendrocyte development / regulation of translational initiation / cytoplasmic translational initiation / Formation of the ternary complex, and subsequently, the 43S complex / Ribosomal scanning and start codon recognition / Translation initiation complex formation / positive regulation of translational initiation / Response of EIF2AK4 (GCN2) to amino acid deficiency / response to glucose / GTP hydrolysis and joining of the 60S ribosomal subunit / L13a-mediated translational silencing of Ceruloplasmin expression / ovarian follicle development / mitophagy / myelination / translation initiation factor binding / translation initiation factor activity / guanyl-nucleotide exchange factor activity / response to endoplasmic reticulum stress / cellular response to amino acid starvation / stress granule assembly / central nervous system development / hippocampus development / translational initiation / PKR-mediated signaling / response to peptide hormone / ABC-family protein mediated transport / cytoplasmic stress granule / cellular response to UV / regulation of translation / T cell receptor signaling pathway / cellular response to heat / response to heat / ribosome binding / cellular response to oxidative stress / positive regulation of apoptotic process / synapse / GTP binding / mitochondrion / RNA binding / extracellular exosome / ATP binding / membrane / identical protein binding / nucleus / plasma membrane / cytoplasm / cytosol Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 2.83 Å | |||||||||
Authors | Shilliday F / Maia de Oliveira T / Gancedo-Rodrigo M | |||||||||
| Funding support | 1 items
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Citation | Journal: Nat Commun / Year: 2026Title: A molecular stabiliser of an inhibitory eIF2B-eIF2(αP) complex activates the Integrated Stress Response. Authors: Fiona Shilliday / Miguel Gancedo-Rodrigo / Ginto George / Shintaro Aibara / Santosh Adhikari / Syedah Neha Ashraf / Evelyne J Barrey / Paolo A Centrella / Damian Crowther / Paige Dickson / ...Authors: Fiona Shilliday / Miguel Gancedo-Rodrigo / Ginto George / Shintaro Aibara / Santosh Adhikari / Syedah Neha Ashraf / Evelyne J Barrey / Paolo A Centrella / Damian Crowther / Paige Dickson / Diana Gikunju / Marie-Aude Guié / John P Guilinger / Anders Gunnarsson / Heather P Harding / Christopher D Hupp / Rachael Jetson / Anthony D Keefe / JeeSoo Monica Kim / Richard J Lewis / Taiana Maia de Oliveira / Jennifer Le-Marshall / Usha Narayanan / Katherine A Nugai / Dušan Petrović / Emma Rivers / David Ron / Daisy Stringfellow / Karl Syson / Lewis Ward / John T S Yeoman / Yan Yu / Ying Zhang / Alisa Zyryanova / David J Baker / Perla Breccia / John E Linley / ![]() Abstract: Eukaryotic initiation factor 2B (eIF2B), a guanine nucleotide exchange factor (GEF), promotes protein synthesis by charging translation initiation factor 2 (eIF2) with GTP. Stress-induced ...Eukaryotic initiation factor 2B (eIF2B), a guanine nucleotide exchange factor (GEF), promotes protein synthesis by charging translation initiation factor 2 (eIF2) with GTP. Stress-induced phosphorylation of eIF2 on its α-subunit [eIF2(αP)] inhibits this reaction triggering a protective Integrated Stress Response (ISR). A DNA-encoded chemical library (DEL) screen for modulators of eIF2B, led to the identification of a chemical series that stabilises the inactive state of eIF2B, stimulating the ISR. Cryo-EM of compound-bound eIF2B reveals a conformational switch to the inactive state engaged by eIF2(αP). In cells, compound activity is sensitive to eIF2's phosphorylation state and to a competing eIF2B ligand (ISRIB) that activates the GEF allosterically. These findings establish the feasibility of targeting eIF2B with a drug-like allosteric inhibitor, that serves as an ISR activator (ISRAC), paving the way to explore the therapeutic potential of eIF2B-directed ISR activation. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_53004.map.gz | 197.8 MB | EMDB map data format | |
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| Header (meta data) | emd-53004-v30.xml emd-53004.xml | 27.3 KB 27.3 KB | Display Display | EMDB header |
| Images | emd_53004.png | 69.7 KB | ||
| Filedesc metadata | emd-53004.cif.gz | 8.1 KB | ||
| Others | emd_53004_additional_1.map.gz emd_53004_half_map_1.map.gz emd_53004_half_map_2.map.gz | 105.2 MB 194.4 MB 194.4 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-53004 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-53004 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9qc6MC 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_53004.map.gz / Format: CCP4 / Size: 209.3 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: 0.855 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Additional map: #1
| File | emd_53004_additional_1.map | ||||||||||||
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-Half map: #2
| File | emd_53004_half_map_1.map | ||||||||||||
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-Half map: #1
| File | emd_53004_half_map_2.map | ||||||||||||
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Sample components
-Entire : Complex of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S)
| Entire | Name: Complex of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S) |
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| Components |
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-Supramolecule #1: Complex of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S)
| Supramolecule | Name: Complex of eIF2B decamer bound to (P)eIF2 alpha and Compound A-(S) type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6 |
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| Source (natural) | Organism: Homo sapiens (human) |
-Macromolecule #1: Translation initiation factor eIF2B subunit alpha
| Macromolecule | Name: Translation initiation factor eIF2B subunit alpha / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 36.060656 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MGSSHHHHHH SSGLEVLFQG PMDDKELIEY FKSQMKEDPD MASAVAAIRT LLEFLKRDKG ETIQGLRANL TSAIETLCGV DSSVAVSSG GELFLRFISL ASLEYSDYSK CKKIMIERGE LFLRRISLSR NKIADLCHTF IKDGATILTH AYSRVVLRVL E AAVAAKKR ...String: MGSSHHHHHH SSGLEVLFQG PMDDKELIEY FKSQMKEDPD MASAVAAIRT LLEFLKRDKG ETIQGLRANL TSAIETLCGV DSSVAVSSG GELFLRFISL ASLEYSDYSK CKKIMIERGE LFLRRISLSR NKIADLCHTF IKDGATILTH AYSRVVLRVL E AAVAAKKR FSVYVTESQP DLSGKKMAKA LCHLNVPVTV VLDAAVGYIM EKADLVIVGA EGVVENGGII NKIGTNQMAV CA KAQNKPF YVVAESFKFV RLFPLNQQDV PDKFKYKADT LKVAQTGQDL KEEHPWVDYT APSLITLLFT DLGVLTPSAV SDE LIKLYL UniProtKB: Translation initiation factor eIF2B subunit alpha |
-Macromolecule #2: Translation initiation factor eIF2B subunit beta
| Macromolecule | Name: Translation initiation factor eIF2B subunit beta / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 39.039547 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MPGSAAKGSE LSERIESFVE TLKRGGGPRS SEEMARETLG LLRQIITDHR WSNAGELMEL IRREGRRMTA AQPSETTVGN MVRRVLKII REEYGRLHGR SDESDQQESL HKLLTSGGLN EDFSFHYAQL QSNIIEAINE LLVELEGTME NIAAQALEHI H SNEVIMTI ...String: MPGSAAKGSE LSERIESFVE TLKRGGGPRS SEEMARETLG LLRQIITDHR WSNAGELMEL IRREGRRMTA AQPSETTVGN MVRRVLKII REEYGRLHGR SDESDQQESL HKLLTSGGLN EDFSFHYAQL QSNIIEAINE LLVELEGTME NIAAQALEHI H SNEVIMTI GFSRTVEAFL KEAARKRKFH VIVAECAPFC QGHEMAVNLS KAGIETTVMT DAAIFAVMSR VNKVIIGTKT IL ANGALRA VTGTHTLALA AKHHSTPLIV CAPMFKLSPQ FPNEEDSFHK FVAPEEVLPF TEGDILEKVS VHCPVFDYVP PEL ITLFIS NIGGNAPSYI YRLMSELYHP DDHVL UniProtKB: Translation initiation factor eIF2B subunit beta |
-Macromolecule #3: Translation initiation factor eIF-2B subunit gamma
| Macromolecule | Name: Translation initiation factor eIF-2B subunit gamma / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 50.30423 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MEFQAVVMAV GGGSRMTDLT SSIPKPLLPV GNKPLIWYPL NLLERVGFEE VIVVTTRDVQ KALCAEFKMK MKPDIVCIPD DADMGTADS LRYIYPKLKT DVLVLSCDLI TDVALHEVVD LFRAYDASLA MLMRKGQDSI EPVPGQKGKK KAVEQRDFIG V DSTGKRLL ...String: MEFQAVVMAV GGGSRMTDLT SSIPKPLLPV GNKPLIWYPL NLLERVGFEE VIVVTTRDVQ KALCAEFKMK MKPDIVCIPD DADMGTADS LRYIYPKLKT DVLVLSCDLI TDVALHEVVD LFRAYDASLA MLMRKGQDSI EPVPGQKGKK KAVEQRDFIG V DSTGKRLL FMANEADLDE ELVIKGSILQ KHPRIRFHTG LVDAHLYCLK KYIVDFLMEN GSITSIRSEL IPYLVRKQFS SA SSQQGQE EKEEDLKKKE LKSLDIYSFI KEANTLNLAP YDACWNACRG DRWEDLSRSQ VRCYVHIMKE GLCSRVSTLG LYM EANRQV PKLLSALCPE EPPVHSSAQI VSKHLVGVDS LIGPETQIGE KSSIKRSVIG SSCLIKDRVT ITNCLLMNSV TVEE GSNIQ GSVICNNAVI EKGADIKDCL IGSGQRIEAK AKRVNEVIVG NDQLMEI UniProtKB: Translation initiation factor eIF2B subunit gamma |
-Macromolecule #4: Translation initiation factor eIF-2B subunit delta
| Macromolecule | Name: Translation initiation factor eIF-2B subunit delta / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 57.640168 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MAAVAVAVRE DSGSGMKAEL PPGPGAVGRE MTKEEKLQLR KEKKQQKKKR KEEKGAEPET GSAVSAAQCQ VGPTRELPES GIQLGTPRE KVPAGRSKAE LRAERRAKQE AERALKQARK GEQGGPPPKA SPSTAGETPS GVKRLPEYPQ VDDLLLRRLV K KPERQQVP ...String: MAAVAVAVRE DSGSGMKAEL PPGPGAVGRE MTKEEKLQLR KEKKQQKKKR KEEKGAEPET GSAVSAAQCQ VGPTRELPES GIQLGTPRE KVPAGRSKAE LRAERRAKQE AERALKQARK GEQGGPPPKA SPSTAGETPS GVKRLPEYPQ VDDLLLRRLV K KPERQQVP TRKDYGSKVS LFSHLPQYSR QNSLTQFMSI PSSVIHPAMV RLGLQYSQGL VSGSNARCIA LLRALQQVIQ DY TTPPNEE LSRDLVNKLK PYMSFLTQCR PLSASMHNAI KFLNKEITSV GSSKREEEAK SELRAAIDRY VQEKIVLAAQ AIS RFAYQK ISNGDVILVY GCSSLVSRIL QEAWTEGRRF RVVVVDSRPW LEGRHTLRSL VHAGVPASYL LIPAASYVLP EVSK VLLGA HALLANGSVM SRVGTAQLAL VARAHNVPVL VCCETYKFCE RVQTDAFVSN ELDDPDDLQC KRGEHVALAN WQNHA SLRL LNLVYDVTPP ELVDLVITEL GMIPCSSVPV VLRVKSSDQ UniProtKB: Translation initiation factor eIF2B subunit delta |
-Macromolecule #5: Translation initiation factor eIF2B subunit epsilon
| Macromolecule | Name: Translation initiation factor eIF2B subunit epsilon / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 82.773133 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MGSSHHHHHH SSGLEVLFQG PMAAPVVAPP GVVVSRANKR SGAGPGGSGG GGARGAEEEP PPPLQAVLVA DSFDRRFFPI SKDQPRVLL PLANVALIDY TLEFLTATGV QETFVFCCWK AAQIKEHLLK SKWCRPTSLN VVRIITSELY RSLGDVLRDV D AKALVRSD ...String: MGSSHHHHHH SSGLEVLFQG PMAAPVVAPP GVVVSRANKR SGAGPGGSGG GGARGAEEEP PPPLQAVLVA DSFDRRFFPI SKDQPRVLL PLANVALIDY TLEFLTATGV QETFVFCCWK AAQIKEHLLK SKWCRPTSLN VVRIITSELY RSLGDVLRDV D AKALVRSD FLLVYGDVIS NINITRALEE HRLRRKLEKN VSVMTMIFKE SSPSHPTRCH EDNVVVAVDS TTNRVLHFQK TQ GLRRFAF PLSLFQGSSD GVEVRYDLLD CHISICSPQV AQLFTDNFDY QTRDDFVRGL LVNEEILGNQ IHMHVTAKEY GAR VSNLHM YSAVCADVIR RWVYPLTPEA NFTDSTTQSC THSRHNIYRG PEVSLGHGSI LEENVLLGSG TVIGSNCFIT NSVI GPGCH IGDNVVLDQT YLWQGVRVAA GAQIHQSLLC DNAEVKERVT LKPRSVLTSQ VVVGPNITLP EGSVISLHPP DAEED EDDG EFSDDSGADQ EKDKVKMKGY NPAEVGAAGK GYLWKAAGMN MEEEEELQQN LWGLKINMEE ESESESEQSM DSEEPD SRG GSPQMDDIKV FQNEVLGTLQ RGKEENISCD NLVLEINSLK YAYNISLKEV MQVLSHVVLE FPLQQMDSPL DSSRYCA LL LPLLKAWSPV FRNYIKRAAD HLEALAAIED FFLEHEALGI SMAKVLMAFY QLEILAEETI LSWFSQRDTT DKGQQLRK N QQLQRFIQWL KEAEEESSED D UniProtKB: Translation initiation factor eIF2B subunit epsilon |
-Macromolecule #6: Eukaryotic translation initiation factor 2 subunit 1
| Macromolecule | Name: Eukaryotic translation initiation factor 2 subunit 1 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: Homo sapiens (human) |
| Molecular weight | Theoretical: 24.530879 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: GSMPGLSCRF YQHKFPEVED VVMVNVRSIA EMGAYVSLLE YNNIEGMILL SEL(SEP)RRRIRS INKLIRIGRN ECVVVI RVD KEKGYIDLSK RRVSPEEAIK CEDKFTKSKT VYSILRHVAE VLEYTKDEQL ESLFQRTAWV FDDKYKRPGY GAYDAFK HA VSDPSILDSL ...String: GSMPGLSCRF YQHKFPEVED VVMVNVRSIA EMGAYVSLLE YNNIEGMILL SEL(SEP)RRRIRS INKLIRIGRN ECVVVI RVD KEKGYIDLSK RRVSPEEAIK CEDKFTKSKT VYSILRHVAE VLEYTKDEQL ESLFQRTAWV FDDKYKRPGY GAYDAFK HA VSDPSILDSL DLNEDEREVL INNINRRLTP QLERAPGGLN DIFEAQKIEW HE UniProtKB: Eukaryotic translation initiation factor 2 subunit 1 |
-Macromolecule #7: ~{N}-[(1~{S})-7-[3-[[ethanoyl(methyl)amino]methyl]phenyl]-5-(trif...
| Macromolecule | Name: ~{N}-[(1~{S})-7-[3-[[ethanoyl(methyl)amino]methyl]phenyl]-5-(trifluoromethyl)-1,2,3,4-tetrahydronaphthalen-1-yl]-2-[[(3~{R},4~{S})-3-fluoranylpiperidin-4-yl]methoxy]-~{N}-methyl-ethanamide type: ligand / ID: 7 / Number of copies: 1 / Formula: A1I5O |
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| Molecular weight | Theoretical: 563.627 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: 7.5 |
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| Vitrification | Cryogen name: ETHANE |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: TFS FALCON 4i (4k x 4k) / Average electron dose: 60.0 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 3.0 µm / Nominal defocus min: 0.6 µm |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Keywords
Homo sapiens (human)
Authors
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Processing
FIELD EMISSION GUN
