6K72

eIF2(aP) - eIF2B complex

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Structural basis for eIF2B inhibition in integrated stress response.

Kashiwagi, K., Yokoyama, T., Nishimoto, M., Takahashi, M., Sakamoto, A., Yonemochi, M., Shirouzu, M., Ito, T.

(2019) Science 364: 495-499

  • DOI: 10.1126/science.aaw4104
  • Primary Citation of Related Structures:  
    6JLY, 6JLZ, 6K71, 6K72

  • PubMed Abstract: 

    • A core event in the integrated stress response, an adaptive pathway common to all eukaryotic cells in response to various stress stimuli, is the phosphorylation of eukaryotic translation initiation factor 2 (eIF2). Normally, unphosphorylated eIF2 transfers the methionylated initiator tRNA to the ribosome in a guanosine 5'-triphosphate-dependent manner ...

    A core event in the integrated stress response, an adaptive pathway common to all eukaryotic cells in response to various stress stimuli, is the phosphorylation of eukaryotic translation initiation factor 2 (eIF2). Normally, unphosphorylated eIF2 transfers the methionylated initiator tRNA to the ribosome in a guanosine 5'-triphosphate-dependent manner. By contrast, phosphorylated eIF2 inhibits its specific guanine nucleotide exchange factor, eIF2B. To elucidate how the eIF2 phosphorylation status regulates the eIF2B activity, we determined cryo-electron microscopic and crystallographic structures of eIF2B in complex with unphosphorylated or phosphorylated eIF2. The unphosphorylated and phosphorylated forms of eIF2 bind to eIF2B in completely different manners: the nucleotide exchange-active and -inactive modes, respectively. These structures explain how phosphorylated eIF2 dominantly inhibits the nucleotide exchange activity of eIF2B.

    Organizational Affiliation: 

    RIKEN Center for Biosystems Dynamics Research, Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan. takuhiro.ito@riken.jp.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Translation initiation factor eIF-2B subunit alphaA, B305Homo sapiensMutation(s): 0 
Gene Names: EIF2B1, EIF2BA
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Find proteins for Q14232 (Homo sapiens)
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PHAROS:  Q14232
GTEx:  ENSG00000111361 
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UniProt GroupQ14232
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Translation initiation factor eIF-2B subunit betaC, D351Homo sapiensMutation(s): 0 
Gene Names: EIF2B2, EIF2BB
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Find proteins for P49770 (Homo sapiens)
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PHAROS:  P49770
GTEx:  ENSG00000119718 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Translation initiation factor eIF-2B subunit gammaE, F452Homo sapiensMutation(s): 0 
Gene Names: EIF2B3
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Find proteins for Q9NR50 (Homo sapiens)
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GTEx:  ENSG00000070785 
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UniProt GroupQ9NR50
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Translation initiation factor eIF-2B subunit deltaG, H523Homo sapiensMutation(s): 0 
Gene Names: EIF2B4, EIF2BD
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GTEx:  ENSG00000115211 
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UniProt GroupQ9UI10
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Translation initiation factor eIF-2B subunit epsilonI, J721Homo sapiensMutation(s): 0 
Gene Names: EIF2B5, EIF2BE
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GTEx:  ENSG00000145191 
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 2 subunit 1K, L315Homo sapiensMutation(s): 0 
Gene Names: EIF2S1, EIF2A
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GTEx:  ENSG00000134001 
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 2 subunit 2M333Homo sapiensMutation(s): 0 
Gene Names: EIF2S2, EIF2B
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GTEx:  ENSG00000125977 
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 2 subunit 3N [auth P]472Homo sapiensMutation(s): 0 
Gene Names: EIF2S3, EIF2G
EC: 3.6.5.3
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Find proteins for P41091 (Homo sapiens)
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GTEx:  ENSG00000130741 
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Japan Society for the Promotion of ScienceJapan--
Japan Agency for Medical Research and Development (AMED)Japan--

Revision History  (Full details and data files)

  • Version 1.0: 2019-07-10
    Type: Initial release
  • Version 1.1: 2019-11-06
    Changes: Data collection, Other