3JAM

CryoEM structure of 40S-eIF1A-eIF1 complex from yeast


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.46 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Conformational Differences between Open and Closed States of the Eukaryotic Translation Initiation Complex.

Llacer, J.L.Hussain, T.Marler, L.Aitken, C.E.Thakur, A.Lorsch, J.R.Hinnebusch, A.G.Ramakrishnan, V.

(2015) Mol Cell 59: 399-412

  • DOI: 10.1016/j.molcel.2015.06.033
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Translation initiation in eukaryotes begins with the formation of a pre-initiation complex (PIC) containing the 40S ribosomal subunit, eIF1, eIF1A, eIF3, ternary complex (eIF2-GTP-Met-tRNAi), and eIF5. The PIC, in an open conformation, attaches to th ...

    Translation initiation in eukaryotes begins with the formation of a pre-initiation complex (PIC) containing the 40S ribosomal subunit, eIF1, eIF1A, eIF3, ternary complex (eIF2-GTP-Met-tRNAi), and eIF5. The PIC, in an open conformation, attaches to the 5' end of the mRNA and scans to locate the start codon, whereupon it closes to arrest scanning. We present single particle cryo-electron microscopy (cryo-EM) reconstructions of 48S PICs from yeast in these open and closed states, at 6.0 Å and 4.9 Å, respectively. These reconstructions show eIF2β as well as a configuration of eIF3 that appears to encircle the 40S, occupying part of the subunit interface. Comparison of the complexes reveals a large conformational change in the 40S head from an open mRNA latch conformation to a closed one that constricts the mRNA entry channel and narrows the P site to enclose tRNAi, thus elucidating key events in start codon recognition.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Cambridge CB2 0QH, UK. Electronic address: ramak@mrc-lmb.cam.ac.uk.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
uS5C259Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CKL3 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CKL3 
Go to UniProtKB:  Q6CKL3
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
uS3D237Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CRK7 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CRK7 
Go to UniProtKB:  Q6CRK7
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
uS7F227Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CRA3 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CRA3 
Go to UniProtKB:  Q6CRA3
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
eS6G236Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CM04 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CM04 
Go to UniProtKB:  Q6CM04
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
eS7H190Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CTD6 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CTD6 
Go to UniProtKB:  Q6CTD6
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
uS4J188Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CM18 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CM18 
Go to UniProtKB:  Q6CM18
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
eS12M134Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CLU4 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CLU4 
Go to UniProtKB:  Q6CLU4
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
uS15N151Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CJK0 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CJK0 
Go to UniProtKB:  Q6CJK0
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
uS11O137Kluyveromyces lactisMutation(s): 0 
Find proteins for P27069 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore P27069 
Go to UniProtKB:  P27069
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 18
MoleculeChainsSequence LengthOrganismDetails
uS9Q143Kluyveromyces lactisMutation(s): 0 
Find proteins for Q875N2 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q875N2 
Go to UniProtKB:  Q875N2
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 19
MoleculeChainsSequence LengthOrganismDetails
eS17R136Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CWU3 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CWU3 
Go to UniProtKB:  Q6CWU3
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 21
MoleculeChainsSequence LengthOrganismDetails
eS19T144Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CXM0 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CXM0 
Go to UniProtKB:  Q6CXM0
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 24
MoleculeChainsSequence LengthOrganismDetails
uS8W130Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CW21 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CW21 
Go to UniProtKB:  Q6CW21
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 25
MoleculeChainsSequence LengthOrganismDetails
uS12X145Kluyveromyces lactisMutation(s): 0 
Find proteins for F2Z602 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore F2Z602 
Go to UniProtKB:  F2Z602
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 27
MoleculeChainsSequence LengthOrganismDetails
eS25Z108Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CW78 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CW78 
Go to UniProtKB:  Q6CW78
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 28
MoleculeChainsSequence LengthOrganismDetails
eS26a119Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CS01 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CS01 
Go to UniProtKB:  Q6CS01
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 29
MoleculeChainsSequence LengthOrganismDetails
eS27b82Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CNL2 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CNL2 
Go to UniProtKB:  Q6CNL2
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 31
MoleculeChainsSequence LengthOrganismDetails
uS14d56Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CPG3 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CPG3 
Go to UniProtKB:  Q6CPG3
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 33
MoleculeChainsSequence LengthOrganismDetails
eS31f150Kluyveromyces lactisMutation(s): 0 
Find proteins for P69061 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore P69061 
Go to UniProtKB:  P69061
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 35
MoleculeChainsSequence LengthOrganismDetails
eL41h25Kluyveromyces lactisMutation(s): 0 
Find proteins for P0CX86 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P0CX86 
Go to UniProtKB:  P0CX86
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 36
MoleculeChainsSequence LengthOrganismDetails
eIF1Ai153Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P38912 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P38912 
Go to UniProtKB:  P38912
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 37
MoleculeChainsSequence LengthOrganismDetails
eIF1j108Saccharomyces cerevisiaeMutation(s): 0 
Find proteins for P32911 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P32911 
Go to UniProtKB:  P32911
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
eS8I201Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CMG3 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CMG3 
Go to UniProtKB:  Q6CMG3
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
eS10K106Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CVZ5 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CVZ5 
Go to UniProtKB:  Q6CVZ5
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
uS17L156Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CX80 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CX80 
Go to UniProtKB:  Q6CX80
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
uS19P142Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CKV4 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CKV4 
Go to UniProtKB:  Q6CKV4
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
uS2A254Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CN12 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CN12 
Go to UniProtKB:  Q6CN12
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 20
MoleculeChainsSequence LengthOrganismDetails
uS13S146Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CWT9 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CWT9 
Go to UniProtKB:  Q6CWT9
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 22
MoleculeChainsSequence LengthOrganismDetails
uS10U117Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CIM1 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CIM1 
Go to UniProtKB:  Q6CIM1
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 23
MoleculeChainsSequence LengthOrganismDetails
eS21V87Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CXT6 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CXT6 
Go to UniProtKB:  Q6CXT6
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 26
MoleculeChainsSequence LengthOrganismDetails
eS24Y135Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CU44 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CU44 
Go to UniProtKB:  Q6CU44
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
eS1B255Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CWD0 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CWD0 
Go to UniProtKB:  Q6CWD0
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 30
MoleculeChainsSequence LengthOrganismDetails
eS28c67Kluyveromyces lactisMutation(s): 0 
Find proteins for P33285 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore P33285 
Go to UniProtKB:  P33285
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 32
MoleculeChainsSequence LengthOrganismDetails
eS30e63Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CUH5 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CUH5 
Go to UniProtKB:  Q6CUH5
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 34
MoleculeChainsSequence LengthOrganismDetails
RACK1g326Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CNI7 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CNI7 
Go to UniProtKB:  Q6CNI7
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
eS4E261Kluyveromyces lactisMutation(s): 0 
Find proteins for Q6CWJ2 (Kluyveromyces lactis (strain ATCC 8585 / CBS 2359 / DSM 70799 / NBRC 1267 / NRRL Y-1140 / WM37))
Explore Q6CWJ2 
Go to UniProtKB:  Q6CWJ2
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence

Find similar nucleic acids by: Sequence   |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
18S rRNA21799Kluyveromyces lactis
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download CCD File 
a, b, f
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download CCD File 
2, J, f
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.46 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-08-12
    Type: Initial release
  • Version 1.1: 2015-09-02
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Data collection