5H7U

NMR structure of eIF3 36-163


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report



Literature

Molecular Landscape of the Ribosome Pre-initiation Complex during mRNA Scanning: Structural Role for eIF3c and Its Control by eIF5.

Obayashi, E.Luna, R.E.Nagata, T.Martin-Marcos, P.Hiraishi, H.Singh, C.R.Erzberger, J.P.Zhang, F.Arthanari, H.Morris, J.Pellarin, R.Moore, C.Harmon, I.Papadopoulos, E.Yoshida, H.Nasr, M.L.Unzai, S.Thompson, B.Aube, E.Hustak, S.Stengel, F.Dagraca, E.Ananbandam, A.Gao, P.Urano, T.Hinnebusch, A.G.Wagner, G.Asano, K.

(2017) Cell Rep 18: 2651-2663

  • DOI: 10.1016/j.celrep.2017.02.052
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • During eukaryotic translation initiation, eIF3 binds the solvent-accessible side of the 40S ribosome and recruits the gate-keeper protein eIF1 and eIF5 to the decoding center. This is largely mediated by the N-terminal domain (NTD) of eIF3c, which ca ...

    During eukaryotic translation initiation, eIF3 binds the solvent-accessible side of the 40S ribosome and recruits the gate-keeper protein eIF1 and eIF5 to the decoding center. This is largely mediated by the N-terminal domain (NTD) of eIF3c, which can be divided into three parts: 3c0, 3c1, and 3c2. The N-terminal part, 3c0, binds eIF5 strongly but only weakly to the ribosome-binding surface of eIF1, whereas 3c1 and 3c2 form a stoichiometric complex with eIF1. 3c1 contacts eIF1 through Arg-53 and Leu-96, while 3c2 faces 40S protein uS15/S13, to anchor eIF1 to the scanning pre-initiation complex (PIC). We propose that the 3c0:eIF1 interaction diminishes eIF1 binding to the 40S, whereas 3c0:eIF5 interaction stabilizes the scanning PIC by precluding this inhibitory interaction. Upon start codon recognition, interactions involving eIF5, and ultimately 3c0:eIF1 association, facilitate eIF1 release. Our results reveal intricate molecular interactions within the PIC, programmed for rapid scanning-arrest at the start codon.


    Organizational Affiliation

    Molecular Cellular Developmental Biology Program, Division of Biology, Kansas State University, Manhattan, KS 66506, USA. Electronic address: kasano@ksu.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Eukaryotic translation initiation factor 3 subunit C
A
128Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: NIP1YMR309CYM9924.01CYM9952.11C
Find proteins for P32497 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P32497
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 5H7U Olderado

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
KAKENHIJapan15H01634
KAKENHIJapan26440026

Revision History 

  • Version 1.0: 2017-05-31
    Type: Initial release