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- EMDB-30568: eIF2B-eIF2(aP), aPg complex -

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Basic information

Entry
Database: EMDB / ID: EMD-30568
TitleeIF2B-eIF2(aP), aPg complex
Map data
Sample
  • Complex: Complex of eIF2B with eIF2(aP)
    • Complex: eIF2B
      • Protein or peptide: Translation initiation factor eIF-2B subunit alpha
      • Protein or peptide: Translation initiation factor eIF-2B subunit beta
      • Protein or peptide: Translation initiation factor eIF-2B subunit gamma
      • Protein or peptide: Translation initiation factor eIF-2B subunit delta
      • Protein or peptide: Translation initiation factor eIF-2B subunit epsilon
    • Complex: eIF2(aP)
      • Protein or peptide: Eukaryotic translation initiation factor 2 subunit 1
      • Protein or peptide: Eukaryotic translation initiation factor 2 subunit 2
      • Protein or peptide: Eukaryotic translation initiation factor 2 subunit 3
Function / homology
Function and homology information


male germ cell proliferation / regulation of translation in response to endoplasmic reticulum stress / translation initiation ternary complex / glial limiting end-foot / response to kainic acid / Cellular response to mitochondrial stress / response to manganese-induced endoplasmic reticulum stress / positive regulation of type B pancreatic cell apoptotic process / methionyl-initiator methionine tRNA binding / eukaryotic translation initiation factor 2B complex ...male germ cell proliferation / regulation of translation in response to endoplasmic reticulum stress / translation initiation ternary complex / glial limiting end-foot / response to kainic acid / Cellular response to mitochondrial stress / response to manganese-induced endoplasmic reticulum stress / positive regulation of type B pancreatic cell apoptotic process / methionyl-initiator methionine tRNA binding / eukaryotic translation initiation factor 2B complex / negative regulation of translational initiation in response to stress / Response of EIF2AK1 (HRI) to heme deficiency / Recycling of eIF2:GDP / PERK-mediated unfolded protein response / PERK regulates gene expression / eukaryotic translation initiation factor 2 complex / regulation of translational initiation in response to stress / selenocysteine metabolic process / selenocysteine incorporation / protein-synthesizing GTPase / cytoplasmic translational initiation / translation factor activity, RNA binding / formation of cytoplasmic translation initiation complex / oligodendrocyte development / selenocysteine insertion sequence binding / formation of translation preinitiation complex / guanyl-nucleotide exchange factor complex / astrocyte development / eukaryotic 48S preinitiation complex / astrocyte differentiation / Formation of the ternary complex, and subsequently, the 43S complex / regulation of translational initiation / Translation initiation complex formation / Ribosomal scanning and start codon recognition / Response of EIF2AK4 (GCN2) to amino acid deficiency / L13a-mediated translational silencing of Ceruloplasmin expression / GTP hydrolysis and joining of the 60S ribosomal subunit / positive regulation of translational initiation / response to glucose / stress granule assembly / ovarian follicle development / translation initiation factor binding / translational initiation / translation initiation factor activity / cellular response to amino acid starvation / myelination / response to endoplasmic reticulum stress / guanyl-nucleotide exchange factor activity / central nervous system development / hippocampus development / ABC-family proteins mediated transport / PKR-mediated signaling / response to peptide hormone / cytoplasmic stress granule / cellular response to UV / male gonad development / ribosome binding / regulation of translation / T cell receptor signaling pathway / cellular response to heat / cellular response to oxidative stress / response to heat / in utero embryonic development / cadherin binding / positive regulation of apoptotic process / GTPase activity / mRNA binding / synapse / GTP binding / RNA binding / extracellular exosome / ATP binding / membrane / identical protein binding / nucleus / metal ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Translation initiation factor eIF-2B subunit alpha, N-terminal / Translation initiation factor eIF-2B subunit epsilon, N-terminal / Translation initiation factor eIF-2B subunit epsilon, W2 domain / Translation initiation factor IF2/IF5 / Translation initiation factor IF2/IF5 domain / Translation initiation factor IF2/IF5, N-terminal / Translation initiation factor IF2/IF5, zinc-binding / Domain found in IF2B/IF5 / domain present in translation initiation factor eIF2B and eIF5 / Initiation factor 2B-related ...Translation initiation factor eIF-2B subunit alpha, N-terminal / Translation initiation factor eIF-2B subunit epsilon, N-terminal / Translation initiation factor eIF-2B subunit epsilon, W2 domain / Translation initiation factor IF2/IF5 / Translation initiation factor IF2/IF5 domain / Translation initiation factor IF2/IF5, N-terminal / Translation initiation factor IF2/IF5, zinc-binding / Domain found in IF2B/IF5 / domain present in translation initiation factor eIF2B and eIF5 / Initiation factor 2B-related / Initiation factor 2B-like, C-terminal / Initiation factor 2 subunit family / eIF4-gamma/eIF5/eIF2-epsilon / Domain at the C-termini of GCD6, eIF-2B epsilon, eIF-4 gamma and eIF-5 / W2 domain / W2 domain profile. / IF2a, S1-like domain / Translation initiation factor 2, alpha subunit / Translation initiation factor 2, alpha subunit, middle domain superfamily / Translation initiation factor 2, alpha subunit, C-terminal / Eukaryotic translation initiation factor 2 alpha subunit / Initiation factor eIF2 gamma, domain 2 / Initiation factor eIF2 gamma, GTP-binding domain / Initiation factor eIF2 gamma, C-terminal / Initiation factor eIF2 gamma, C terminal / Nucleotidyl transferase domain / Nucleotidyl transferase / NagB/RpiA transferase-like / Translation elongation factor EF1A/initiation factor IF2gamma, C-terminal / Trimeric LpxA-like superfamily / S1 domain profile. / Translation elongation factor EFTu-like, domain 2 / Elongation factor Tu domain 2 / Ribosomal protein S1-like RNA-binding domain / S1 RNA binding domain / S1 domain / Translational (tr)-type GTP-binding domain / Elongation factor Tu GTP binding domain / Translational (tr)-type guanine nucleotide-binding (G) domain profile. / Nucleotide-diphospho-sugar transferases / Armadillo-type fold / Translation protein, beta-barrel domain superfamily / Nucleic acid-binding, OB-fold / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Eukaryotic translation initiation factor 2 subunit 1 / Eukaryotic translation initiation factor 2 subunit 2 / Eukaryotic translation initiation factor 2 subunit 3 / Translation initiation factor eIF2B subunit beta / Translation initiation factor eIF2B subunit epsilon / Translation initiation factor eIF2B subunit alpha / Translation initiation factor eIF2B subunit gamma / Translation initiation factor eIF2B subunit delta
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 4.3 Å
AuthorsKashiwagi K / Ito T
Funding support Japan, 2 items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS) Japan
Japan Agency for Medical Research and Development (AMED) Japan
CitationJournal: Mol Cell / Year: 2021
Title: ISRIB Blunts the Integrated Stress Response by Allosterically Antagonising the Inhibitory Effect of Phosphorylated eIF2 on eIF2B.
Authors: Alisa F Zyryanova / Kazuhiro Kashiwagi / Claudia Rato / Heather P Harding / Ana Crespillo-Casado / Luke A Perera / Ayako Sakamoto / Madoka Nishimoto / Mayumi Yonemochi / Mikako Shirouzu / ...Authors: Alisa F Zyryanova / Kazuhiro Kashiwagi / Claudia Rato / Heather P Harding / Ana Crespillo-Casado / Luke A Perera / Ayako Sakamoto / Madoka Nishimoto / Mayumi Yonemochi / Mikako Shirouzu / Takuhiro Ito / David Ron /
Abstract: The small molecule ISRIB antagonizes the activation of the integrated stress response (ISR) by phosphorylated translation initiation factor 2, eIF2(αP). ISRIB and eIF2(αP) bind distinct sites in ...The small molecule ISRIB antagonizes the activation of the integrated stress response (ISR) by phosphorylated translation initiation factor 2, eIF2(αP). ISRIB and eIF2(αP) bind distinct sites in their common target, eIF2B, a guanine nucleotide exchange factor for eIF2. We have found that ISRIB-mediated acceleration of eIF2B's nucleotide exchange activity in vitro is observed preferentially in the presence of eIF2(αP) and is attenuated by mutations that desensitize eIF2B to the inhibitory effect of eIF2(αP). ISRIB's efficacy as an ISR inhibitor in cells also depends on presence of eIF2(αP). Cryoelectron microscopy (cryo-EM) showed that engagement of both eIF2B regulatory sites by two eIF2(αP) molecules remodels both the ISRIB-binding pocket and the pockets that would engage eIF2α during active nucleotide exchange, thereby discouraging both binding events. In vitro, eIF2(αP) and ISRIB reciprocally opposed each other's binding to eIF2B. These findings point to antagonistic allostery in ISRIB action on eIF2B, culminating in inhibition of the ISR.
History
DepositionSep 22, 2020-
Header (metadata) releaseDec 9, 2020-
Map releaseDec 9, 2020-
UpdateJan 27, 2021-
Current statusJan 27, 2021Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.019
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.019
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-7d43
  • Surface level: 0.019
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_30568.png

Downloads & links

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Map

FileDownload / File: emd_30568.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.47 Å
Density
Contour LevelBy AUTHOR: 0.0125 / Movie #1: 0.019
Minimum - Maximum-0.04496613 - 0.101697855
Average (Standard dev.)0.00018052584 (±0.002194293)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions300300300
Spacing300300300
CellA=B=C: 441.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.471.471.47
M x/y/z300300300
origin x/y/z0.0000.0000.000
length x/y/z441.000441.000441.000
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ300300300
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS300300300
D min/max/mean-0.0450.1020.000

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Supplemental data

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Sample components

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Entire : Complex of eIF2B with eIF2(aP)

EntireName: Complex of eIF2B with eIF2(aP)
Components
  • Complex: Complex of eIF2B with eIF2(aP)
    • Complex: eIF2B
      • Protein or peptide: Translation initiation factor eIF-2B subunit alpha
      • Protein or peptide: Translation initiation factor eIF-2B subunit beta
      • Protein or peptide: Translation initiation factor eIF-2B subunit gamma
      • Protein or peptide: Translation initiation factor eIF-2B subunit delta
      • Protein or peptide: Translation initiation factor eIF-2B subunit epsilon
    • Complex: eIF2(aP)
      • Protein or peptide: Eukaryotic translation initiation factor 2 subunit 1
      • Protein or peptide: Eukaryotic translation initiation factor 2 subunit 2
      • Protein or peptide: Eukaryotic translation initiation factor 2 subunit 3

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Supramolecule #1: Complex of eIF2B with eIF2(aP)

SupramoleculeName: Complex of eIF2B with eIF2(aP) / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #2: eIF2B

SupramoleculeName: eIF2B / type: complex / ID: 2 / Parent: 1 / Macromolecule list: #1-#5
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Escherichia coli (E. coli)

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Supramolecule #3: eIF2(aP)

SupramoleculeName: eIF2(aP) / type: complex / ID: 3 / Parent: 1 / Macromolecule list: #6-#8
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Homo sapiens (human)

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Macromolecule #1: Translation initiation factor eIF-2B subunit alpha

MacromoleculeName: Translation initiation factor eIF-2B subunit alpha / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 33.754148 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MDDKELIEYF KSQMKEDPDM ASAVAAIRTL LEFLKRDKGE TIQGLRANLT SAIETLCGVD SSVAVSSGGE LFLRFISLAS LEYSDYSKC KKIMIERGEL FLRRISLSRN KIADLCHTFI KDGATILTHA YSRVVLRVLE AAVAAKKRFS VYVTESQPDL S GKKMAKAL ...String:
MDDKELIEYF KSQMKEDPDM ASAVAAIRTL LEFLKRDKGE TIQGLRANLT SAIETLCGVD SSVAVSSGGE LFLRFISLAS LEYSDYSKC KKIMIERGEL FLRRISLSRN KIADLCHTFI KDGATILTHA YSRVVLRVLE AAVAAKKRFS VYVTESQPDL S GKKMAKAL CHLNVPVTVV LDAAVGYIME KADLVIVGAE GVVENGGIIN KIGTNQMAVC AKAQNKPFYV VAESFKFVRL FP LNQQDVP DKFKYKADTL KVAQTGQDLK EEHPWVDYTA PSLITLLFTD LGVLTPSAVS DELIKLYL

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Macromolecule #2: Translation initiation factor eIF-2B subunit beta

MacromoleculeName: Translation initiation factor eIF-2B subunit beta / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 39.039547 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: 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

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Macromolecule #3: Translation initiation factor eIF-2B subunit gamma

MacromoleculeName: Translation initiation factor eIF-2B subunit gamma / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 50.30423 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: 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

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Macromolecule #4: Translation initiation factor eIF-2B subunit delta

MacromoleculeName: Translation initiation factor eIF-2B subunit delta / type: protein_or_peptide / ID: 4 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 57.640168 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: 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

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Macromolecule #5: Translation initiation factor eIF-2B subunit epsilon

MacromoleculeName: Translation initiation factor eIF-2B subunit epsilon / type: protein_or_peptide / ID: 5 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 80.466609 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString: MAAPVVAPPG VVVSRANKRS GAGPGGSGGG GARGAEEEPP PPLQAVLVAD SFDRRFFPIS KDQPRVLLPL ANVALIDYTL EFLTATGVQ ETFVFCCWKA AQIKEHLLKS KWCRPTSLNV VRIITSELYR SLGDVLRDVD AKALVRSDFL LVYGDVISNI N ITRALEEH ...String:
MAAPVVAPPG VVVSRANKRS GAGPGGSGGG GARGAEEEPP PPLQAVLVAD SFDRRFFPIS KDQPRVLLPL ANVALIDYTL EFLTATGVQ ETFVFCCWKA AQIKEHLLKS KWCRPTSLNV VRIITSELYR SLGDVLRDVD AKALVRSDFL LVYGDVISNI N ITRALEEH RLRRKLEKNV SVMTMIFKES SPSHPTRCHE DNVVVAVDST TNRVLHFQKT QGLRRFAFPL SLFQGSSDGV EV RYDLLDC HISICSPQVA QLFTDNFDYQ TRDDFVRGLL VNEEILGNQI HMHVTAKEYG ARVSNLHMYS AVCADVIRRW VYP LTPEAN FTDSTTQSCT HSRHNIYRGP EVSLGHGSIL EENVLLGSGT VIGSNCFITN SVIGPGCHIG DNVVLDQTYL WQGV RVAAG AQIHQSLLCD NAEVKERVTL KPRSVLTSQV VVGPNITLPE GSVISLHPPD AEEDEDDGEF SDDSGADQEK DKVKM KGYN PAEVGAAGKG YLWKAAGMNM EEEEELQQNL WGLKINMEEE SESESEQSMD SEEPDSRGGS PQMDDIKVFQ NEVLGT LQR GKEENISCDN LVLEINSLKY AYNISLKEVM QVLSHVVLEF PLQQMDSPLD SSRYCALLLP LLKAWSPVFR NYIKRAA DH LEALAAIEDF FLEHEALGIS MAKVLMAFYQ LEILAEETIL SWFSQRDTTD KGQQLRKNQQ LQRFIQWLKE AEEESSED D

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Macromolecule #6: Eukaryotic translation initiation factor 2 subunit 1

MacromoleculeName: Eukaryotic translation initiation factor 2 subunit 1 / type: protein_or_peptide / ID: 6 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 36.241156 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MPGLSCRFYQ HKFPEVEDVV MVNVRSIAEM GAYVSLLEYN NIEGMILLSE L(SEP)RRRIRSIN KLIRIGRNEC VVVIRV DKE KGYIDLSKRR VSPEEAIKCE DKFTKSKTVY SILRHVAEVL EYTKDEQLES LFQRTAWVFD DKYKRPGYGA YDAFKHA VS DPSILDSLDL ...String:
MPGLSCRFYQ HKFPEVEDVV MVNVRSIAEM GAYVSLLEYN NIEGMILLSE L(SEP)RRRIRSIN KLIRIGRNEC VVVIRV DKE KGYIDLSKRR VSPEEAIKCE DKFTKSKTVY SILRHVAEVL EYTKDEQLES LFQRTAWVFD DKYKRPGYGA YDAFKHA VS DPSILDSLDL NEDEREVLIN NINRRLTPQA VKIRADIEVA CYGYEGIDAV KEALRAGLNC STENMPIKIN LIAPPRYV M TTTTLERTEG LSVLSQAMAV IKEKIEEKRG VFNVQMEPKV VTDTDETELA RQMERLEREN AEVDGDDDAE EMEAKAED

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Macromolecule #7: Eukaryotic translation initiation factor 2 subunit 2

MacromoleculeName: Eukaryotic translation initiation factor 2 subunit 2 / type: protein_or_peptide / ID: 7 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 38.454484 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MSGDEMIFDP TMSKKKKKKK KPFMLDEEGD TQTEETQPSE TKEVEPEPTE DKDLEADEED TRKKDASDDL DDLNFFNQKK KKKKTKKIF DIDEAEEGVK DLKIESDVQE PTEPEDDLDI MLGNKKKKKK NVKFPDEDEI LEKDEALEDE DNKKDDGISF S NQTGPAWA ...String:
MSGDEMIFDP TMSKKKKKKK KPFMLDEEGD TQTEETQPSE TKEVEPEPTE DKDLEADEED TRKKDASDDL DDLNFFNQKK KKKKTKKIF DIDEAEEGVK DLKIESDVQE PTEPEDDLDI MLGNKKKKKK NVKFPDEDEI LEKDEALEDE DNKKDDGISF S NQTGPAWA GSERDYTYEE LLNRVFNIMR EKNPDMVAGE KRKFVMKPPQ VVRVGTKKTS FVNFTDICKL LHRQPKHLLA FL LAELGTS GSIDGNNQLV IKGRFQQKQI ENVLRRYIKE YVTCHTCRSP DTILQKDTRL YFLQCETCHS RCSVASIKTG FQA VTGKRA QLRAKAN

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Macromolecule #8: Eukaryotic translation initiation factor 2 subunit 3

MacromoleculeName: Eukaryotic translation initiation factor 2 subunit 3 / type: protein_or_peptide / ID: 8 / Number of copies: 1 / Enantiomer: LEVO / EC number: protein-synthesizing GTPase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 51.178406 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MAGGEAGVTL GQPHLSRQDL TTLDVTKLTP LSHEVISRQA TINIGTIGHV AHGKSTVVKA ISGVHTVRFK NELERNITIK LGYANAKIY KLDDPSCPRP ECYRSCGSST PDEFPTDIPG TKGNFKLVRH VSFVDCPGHD ILMATMLNGA AVMDAALLLI A GNESCPQP ...String:
MAGGEAGVTL GQPHLSRQDL TTLDVTKLTP LSHEVISRQA TINIGTIGHV AHGKSTVVKA ISGVHTVRFK NELERNITIK LGYANAKIY KLDDPSCPRP ECYRSCGSST PDEFPTDIPG TKGNFKLVRH VSFVDCPGHD ILMATMLNGA AVMDAALLLI A GNESCPQP QTSEHLAAIE IMKLKHILIL QNKIDLVKES QAKEQYEQIL AFVQGTVAEG APIIPISAQL KYNIEVVCEY IV KKIPVPP RDFTSEPRLI VIRSFDVNKP GCEVDDLKGG VAGGSILKGV LKVGQEIEVR PGIVSKDSEG KLMCKPIFSK IVS LFAEHN DLQYAAPGGL IGVGTKIDPT LCRADRMVGQ VLGAVGALPE IFTELEISYF LLRRLLGVRT EGDKKAAKVQ KLSK NEVLM VNIGSLSTGG RVSAVKADLG KIVLTNPVCT EVGEKIALSR RVEKHWRLIG WGQIRRGVTI KPTVDDD

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TECNAI ARCTICA
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Talos Arctica / Image courtesy: FEI Company

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Image processing

Final reconstructionResolution.type: BY AUTHOR / Resolution: 4.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 66721
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

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