7AFK

Bacterial 30S ribosomal subunit assembly complex state D (head domain)


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A conserved rRNA switch is central to decoding site maturation on the small ribosomal subunit.

Schedlbauer, A.Iturrioz, I.Ochoa-Lizarralde, B.Diercks, T.Lopez-Alonso, J.P.Lavin, J.L.Kaminishi, T.Capuni, R.Dhimole, N.de Astigarraga, E.Gil-Carton, D.Fucini, P.Connell, S.R.

(2021) Sci Adv 7

  • DOI: https://doi.org/10.1126/sciadv.abf7547
  • Primary Citation of Related Structures:  
    7AF3, 7AF5, 7AF8, 7AFA, 7AFD, 7AFH, 7AFI, 7AFK, 7AFL, 7AFN, 7AFO, 7AFQ, 7AFR, 7BOD, 7BOE, 7BOF, 7BOG, 7BOH, 7BOI, 7NAR, 7NAS, 7NAT, 7NAU, 7NAV, 7NAX

  • PubMed Abstract: 

    While a structural description of the molecular mechanisms guiding ribosome assembly in eukaryotic systems is emerging, bacteria use an unrelated core set of assembly factors for which high-resolution structural information is still missing. To address this, we used single-particle cryo-electron microscopy to visualize the effects of bacterial ribosome assembly factors RimP, RbfA, RsmA, and RsgA on the conformational landscape of the 30 S ribosomal subunit and obtained eight snapshots representing late steps in the folding of the decoding center. Analysis of these structures identifies a conserved secondary structure switch in the 16 S ribosomal RNA central to decoding site maturation and suggests both a sequential order of action and molecular mechanisms for the assembly factors in coordinating and controlling this switch. Structural and mechanistic parallels between bacterial and eukaryotic systems indicate common folding features inherent to all ribosomes.


  • Organizational Affiliation

    Center for Cooperative Research in Biosciences (CIC bioGUNE), Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 801A, 48160 Derio, Spain.


Macromolecules

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S2241Escherichia coliMutation(s): 0 
UniProt
Find proteins for P0A7V0 (Escherichia coli (strain K12))
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UniProt GroupP0A7V0
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S3233Escherichia coliMutation(s): 0 
UniProt
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S7D [auth G]179Escherichia coliMutation(s): 0 
UniProt
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UniProt GroupP02359
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S9E [auth I]130Escherichia coliMutation(s): 0 
UniProt
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S10F [auth J]103Escherichia coliMutation(s): 0 
UniProt
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S13G [auth M]118Escherichia coliMutation(s): 0 
UniProt
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S14H [auth N]101Escherichia coliMutation(s): 0 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
30S ribosomal protein S19I [auth S]92Escherichia coliMutation(s): 0 
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Entity ID: 1
MoleculeChains LengthOrganismImage
16SrRNA (head domain of the 30S ribosome)A [auth 1]1,541Escherichia coli
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
V [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
J [auth 1]
K [auth 1]
L [auth 1]
M [auth 1]
N [auth 1]
J [auth 1],
K [auth 1],
L [auth 1],
M [auth 1],
N [auth 1],
O [auth 1],
P [auth 1],
Q [auth 1],
R [auth 1],
S [auth 1],
T [auth 1],
U [auth 1]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.18
MODEL REFINEMENTCoot0.9
RECONSTRUCTIONRELION3.0

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Ministry of Economy and Competitiveness (MINECO)SpainCTQ2017-82222-R
European CommissionSpainPCIG14-GA-2013-632072

Revision History  (Full details and data files)

  • Version 1.0: 2021-07-07
    Type: Initial release
  • Version 1.1: 2021-12-08
    Changes: Database references
  • Version 1.2: 2024-04-24
    Changes: Data collection, Refinement description