6K71

eIF2 - eIF2B complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.3 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.0 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:  

  • 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 tra ...

    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.,RIKEN Center for Biosystems Dynamics Research, Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Translation initiation factor eIF-2B subunit alpha
A, B
305Homo sapiensMutation(s): 0 
Gene Names: EIF2B1 (EIF2BA)
Find proteins for Q14232 (Homo sapiens)
Go to Gene View: EIF2B1
Go to UniProtKB:  Q14232
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Translation initiation factor eIF-2B subunit beta
C, D
351Homo sapiensMutation(s): 0 
Gene Names: EIF2B2 (EIF2BB)
Find proteins for P49770 (Homo sapiens)
Go to Gene View: EIF2B2
Go to UniProtKB:  P49770
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Translation initiation factor eIF-2B subunit gamma
E, F
452Homo sapiensMutation(s): 0 
Gene Names: EIF2B3
Find proteins for Q9NR50 (Homo sapiens)
Go to Gene View: EIF2B3
Go to UniProtKB:  Q9NR50
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Translation initiation factor eIF-2B subunit delta
G, H
523Homo sapiensMutation(s): 0 
Gene Names: EIF2B4 (EIF2BD)
Find proteins for Q9UI10 (Homo sapiens)
Go to Gene View: EIF2B4
Go to UniProtKB:  Q9UI10
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Translation initiation factor eIF-2B subunit epsilon
I, J
721Homo sapiensMutation(s): 0 
Gene Names: EIF2B5 (EIF2BE)
Find proteins for Q13144 (Homo sapiens)
Go to Gene View: EIF2B5
Go to UniProtKB:  Q13144
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation initiation factor 2 subunit 1
K
315Homo sapiensMutation(s): 0 
Gene Names: EIF2S1 (EIF2A)
Find proteins for P05198 (Homo sapiens)
Go to Gene View: EIF2S1
Go to UniProtKB:  P05198
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation initiation factor 2 subunit 2
M
333Homo sapiensMutation(s): 0 
Gene Names: EIF2S2 (EIF2B)
Find proteins for P20042 (Homo sapiens)
Go to Gene View: EIF2S2
Go to UniProtKB:  P20042
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation initiation factor 2 subunit 3
P
472Homo sapiensMutation(s): 0 
Gene Names: EIF2S3 (EIF2G)
Find proteins for P41091 (Homo sapiens)
Go to Gene View: EIF2S3
Go to UniProtKB:  P41091
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.3 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



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