5IWA

Crystal structure of the 30S ribosomal subunit from Thermus thermophilus in complex with the GE81112 peptide antibiotic


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Inhibition of translation initiation complex formation by GE81112 unravels a 16S rRNA structural switch involved in P-site decoding.

Fabbretti, A.Schedlbauer, A.Brandi, L.Kaminishi, T.Giuliodori, A.M.Garofalo, R.Ochoa-Lizarralde, B.Takemoto, C.Yokoyama, S.Connell, S.R.Gualerzi, C.O.Fucini, P.

(2016) Proc.Natl.Acad.Sci.USA 113: E2286-E2295

  • DOI: 10.1073/pnas.1521156113

  • PubMed Abstract: 
  • In prokaryotic systems, the initiation phase of protein synthesis is governed by the presence of initiation factors that guide the transition of the small ribosomal subunit (30S) from an unlocked preinitiation complex (30S preIC) to a locked initiati ...

    In prokaryotic systems, the initiation phase of protein synthesis is governed by the presence of initiation factors that guide the transition of the small ribosomal subunit (30S) from an unlocked preinitiation complex (30S preIC) to a locked initiation complex (30SIC) upon the formation of a correct codon-anticodon interaction in the peptidyl (P) site. Biochemical and structural characterization of GE81112, a translational inhibitor specific for the initiation phase, indicates that the main mechanism of action of this antibiotic is to prevent P-site decoding by stabilizing the anticodon stem loop of the initiator tRNA in a distorted conformation. This distortion stalls initiation in the unlocked 30S preIC state characterized by tighter IF3 binding and a reduced association rate for the 50S subunit. At the structural level we observe that in the presence of GE81112 the h44/h45/h24a interface, which is part of the IF3 binding site and forms ribosomal intersubunit bridges, preferentially adopts a disengaged conformation. Accordingly, the findings reveal that the dynamic equilibrium between the disengaged and engaged conformations of the h44/h45/h24a interface regulates the progression of protein synthesis, acting as a molecular switch that senses and couples the 30S P-site decoding step of translation initiation to the transition from an unlocked preIC to a locked 30SIC state.


    Organizational Affiliation

    Laboratory of Genetics, Department of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy;




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S2
B
226Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsB (rps2)
Find proteins for P80371 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80371
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S3
C
206Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsC (rps3)
Find proteins for P80372 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80372
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S4
D
208Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsD (rps4)
Find proteins for P80373 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80373
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S5
E
157Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsE
Find proteins for Q5SHQ5 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHQ5
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S6
F
101Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsF
Find proteins for Q5SLP8 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SLP8
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S7
G
155Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsG (rps7)
Find proteins for P17291 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P17291
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S8
H
138Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsH
Find proteins for P0DOY9 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P0DOY9
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S9
I
127Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsI (rps9)
Find proteins for P80374 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80374
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S10
J
99Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsJ
Find proteins for Q5SHN7 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHN7
Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S11
K
115Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsK (rps11)
Find proteins for P80376 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80376
Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S12
L
124Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsL
Find proteins for Q5SHN3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHN3
Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S13
M
125Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsM (rps13)
Find proteins for P80377 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80377
Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S14 type Z
N
60Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsZ (rpsN)
Find proteins for P0DOY6 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P0DOY6
Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S15
O
88Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsO
Find proteins for Q5SJ76 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SJ76
Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S16
P
85Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsP
Find proteins for Q5SJH3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SJH3
Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S17
Q
104Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsQ
Find proteins for P0DOY7 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P0DOY7
Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S18
R
71Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsR
Find proteins for Q5SLQ0 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SLQ0
Entity ID: 18
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S19
S
83Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsS
Find proteins for Q5SHP2 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHP2
Entity ID: 19
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S20
T
103Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsT (rps20)
Find proteins for P80380 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80380
Entity ID: 20
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein Thx
V
24Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: rpsU
Find proteins for Q5SIH3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SIH3
Entity ID: 21
MoleculeChainsLengthOrganism
16S ribosomal RNAA1509Thermus thermophilus HB8
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
D, N
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
6EK
Query on 6EK

Download SDF File 
Download CCD File 
M
(2S,3S)-2-{[(2S)-3-(2-amino-1H-imidazol-5-yl)-2-{[(2S,4S)-5-(carbamoyloxy)-4-hydroxy-2-({[(2S,3S)-3-hydroxypiperidin-2-yl]carbonyl}amino)pentanoyl]amino}propanoyl]amino}-3-(2-chloro-1H-imidazol-5-yl)-3-hydroxypropanoic acid
C24 H35 Cl N10 O10
UFNFLYFKIYFJJJ-PLHJXKGHSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, E, H, K, O, S
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.166 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 413.140α = 90.00
b = 413.140β = 90.00
c = 173.630γ = 90.00
Software Package:
Software NamePurpose
PHENIXphasing
PDB_EXTRACTdata extraction
PHENIXrefinement
XSCALEdata scaling
Cootmodel building
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-04-27
    Type: Initial release
  • Version 1.1: 2017-04-05
    Type: Structure summary