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, 6K72, 6K71

  • 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 transfe ...

    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 alpha AB305Homo sapiensMutation(s): 0 
Gene Names: EIF2B1EIF2BA
Find proteins for Q14232 (Homo sapiens)
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PHAROS:  Q14232
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Translation initiation factor eIF-2B subunit beta CD351Homo sapiensMutation(s): 0 
Gene Names: EIF2B2EIF2BB
Find proteins for P49770 (Homo sapiens)
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PHAROS:  P49770
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Translation initiation factor eIF-2B subunit gamma EF452Homo sapiensMutation(s): 0 
Gene Names: EIF2B3
Find proteins for Q9NR50 (Homo sapiens)
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PHAROS:  Q9NR50
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Translation initiation factor eIF-2B subunit delta GH523Homo sapiensMutation(s): 0 
Gene Names: EIF2B4EIF2BD
Find proteins for Q9UI10 (Homo sapiens)
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PHAROS:  Q9UI10
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Translation initiation factor eIF-2B subunit epsilon IJ721Homo sapiensMutation(s): 0 
Gene Names: EIF2B5EIF2BE
Find proteins for Q13144 (Homo sapiens)
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PHAROS:  Q13144
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 2 subunit 1 KL315Homo sapiensMutation(s): 0 
Gene Names: EIF2S1EIF2A
Find proteins for P05198 (Homo sapiens)
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PHAROS:  P05198
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 2 subunit 2 M333Homo sapiensMutation(s): 0 
Gene Names: EIF2S2EIF2B
Find proteins for P20042 (Homo sapiens)
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PHAROS:  P20042
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Eukaryotic translation initiation factor 2 subunit 3 P472Homo sapiensMutation(s): 0 
Gene Names: EIF2S3EIF2G
EC: 3.6.5.3
Find proteins for P41091 (Homo sapiens)
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PHAROS:  P41091
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  • Reference Sequence
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 

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