5U4I

Structural Basis of Co-translational Quality Control by ArfA and RF2 Bound to Ribosome


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.5 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Structural basis of co-translational quality control by ArfA and RF2 bound to ribosome.

Zeng, F.Chen, Y.Remis, J.Shekhar, M.Phillips, J.C.Tajkhorshid, E.Jin, H.

(2017) Nature 541: 554-557

  • DOI: 10.1038/nature21053
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Quality control mechanisms intervene appropriately when defective translation events occur, in order to preserve the integrity of protein synthesis. Rescue of ribosomes translating on messenger RNAs that lack stop codons is one of the co-translationa ...

    Quality control mechanisms intervene appropriately when defective translation events occur, in order to preserve the integrity of protein synthesis. Rescue of ribosomes translating on messenger RNAs that lack stop codons is one of the co-translational quality control pathways. In many bacteria, ArfA recognizes stalled ribosomes and recruits the release factor RF2, which catalyses the termination of protein synthesis. Although an induced-fit mechanism of nonstop mRNA surveillance mediated by ArfA and RF2 has been reported, the molecular interaction between ArfA and RF2 in the ribosome that is responsible for the mechanism is unknown. Here we report an electron cryo-microscopy structure of ArfA and RF2 in complex with the 70S ribosome bound to a nonstop mRNA. The structure, which is consistent with our kinetic and biochemical data, reveals the molecular interactions that enable ArfA to specifically recruit RF2, not RF1, into the ribosome and to enable RF2 to release the truncated protein product in this co-translational quality control pathway. The positively charged C-terminal domain of ArfA anchors in the mRNA entry channel of the ribosome. Furthermore, binding of ArfA and RF2 induces conformational changes in the ribosomal decoding centre that are similar to those seen in other protein-involved decoding processes. Specific interactions between residues in the N-terminal domain of ArfA and RF2 help RF2 to adopt a catalytically competent conformation for peptide release. Our findings provide a framework for understanding recognition of the translational state of the ribosome by new proteins, and expand our knowledge of the decoding potential of the ribosome.


    Organizational Affiliation

    Department of Biochemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L2
C
273Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplB
Find proteins for P60422 (Escherichia coli (strain K12))
Go to UniProtKB:  P60422
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L3
D
209Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplC
Find proteins for P60438 (Escherichia coli (strain K12))
Go to UniProtKB:  P60438
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L4
E
201Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplD (eryA)
Find proteins for P60723 (Escherichia coli (strain K12))
Go to UniProtKB:  P60723
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L5
F
179Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplE
Find proteins for P62399 (Escherichia coli (strain K12))
Go to UniProtKB:  P62399
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L6
G
177Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplF
Find proteins for P0AG55 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG55
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L9
H
149Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplI
Find proteins for P0A7R1 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7R1
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L11
J
142Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplK (relC)
Find proteins for P0A7J7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7J7
Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L13
K
142Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplM
Find proteins for P0AA10 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AA10
Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L14
L
123Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplN
Find proteins for P0ADY3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADY3
Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L15
M
144Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplO
Find proteins for P02413 (Escherichia coli (strain K12))
Go to UniProtKB:  P02413
Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L16
N
136Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplP
Find proteins for P0ADY7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADY7
Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L17
O
127Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplQ
Find proteins for P0AG44 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG44
Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L18
P
117Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplR
Find proteins for P0C018 (Escherichia coli (strain K12))
Go to UniProtKB:  P0C018
Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L19
Q
115Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplS
Find proteins for P0A7K6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7K6
Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L20
R
118Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplT (pdzA)
Find proteins for P0A7L3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7L3
Entity ID: 18
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L21
S
103Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplU
Find proteins for P0AG48 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG48
Entity ID: 19
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L22
T
110Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplV (eryB)
Find proteins for P61175 (Escherichia coli (strain K12))
Go to UniProtKB:  P61175
Entity ID: 20
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L23
U
100Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplW
Find proteins for P0ADZ0 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADZ0
Entity ID: 21
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L24
V
104Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplX
Find proteins for P60624 (Escherichia coli (strain K12))
Go to UniProtKB:  P60624
Entity ID: 22
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L25
W
94Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplY
Find proteins for P68919 (Escherichia coli (strain K12))
Go to UniProtKB:  P68919
Entity ID: 23
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L27
X
85Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmA
Find proteins for P0A7L8 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7L8
Entity ID: 24
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L28
Y
78Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmB
Find proteins for P0A7M2 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7M2
Entity ID: 25
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L29
Z
63Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmC
Find proteins for P0A7M6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7M6
Entity ID: 26
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L30
0
59Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmD
Find proteins for P0AG51 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG51
Entity ID: 27
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L32
1
57Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmF
Find proteins for P0A7N4 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7N4
Entity ID: 28
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L33
2
55Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmG
Find proteins for P0A7N9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7N9
Entity ID: 29
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L34
3
46Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmH (rimA, ssaF)
Find proteins for P0A7P5 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7P5
Entity ID: 30
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L35
4
65Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmI
Find proteins for P0A7Q1 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7Q1
Entity ID: 31
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L36
5
38Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmJ
Find proteins for P0A7Q6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7Q6
Entity ID: 33
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S2
b
241Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsB
Find proteins for P0A7V0 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7V0
Entity ID: 34
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S3
c
233Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsC
Find proteins for P0A7V3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7V3
Entity ID: 35
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S4
d
206Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsD (ramA)
Find proteins for P0A7V8 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7V8
Entity ID: 36
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S5
e
167Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsE (spc)
Find proteins for P0A7W1 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7W1
Entity ID: 37
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S6
f
135Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsF
Find proteins for P02358 (Escherichia coli (strain K12))
Go to UniProtKB:  P02358
Entity ID: 38
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S7
g
179Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsG
Find proteins for P02359 (Escherichia coli (strain K12))
Go to UniProtKB:  P02359
Entity ID: 39
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S8
h
129Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsH
Find proteins for P0A7W7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7W7
Entity ID: 40
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S9
i
130Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsI
Find proteins for P0A7X3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7X3
Entity ID: 41
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S10
j
103Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsJ (nusE)
Find proteins for P0A7R5 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7R5
Entity ID: 42
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S11
k
117Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsK
Find proteins for P0A7R9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7R9
Entity ID: 43
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S12
l
123Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsL (strA)
Find proteins for P0A7S3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7S3
Entity ID: 44
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S13
m
118Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsM
Find proteins for P0A7S9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7S9
Entity ID: 45
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S14
n
100Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsN
Find proteins for P0AG59 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG59
Entity ID: 46
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S15
o
88Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsO (secC)
Find proteins for P0ADZ4 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADZ4
Entity ID: 47
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S16
p
82Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsP
Find proteins for P0A7T3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7T3
Entity ID: 48
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S17
q
84Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsQ (neaA)
Find proteins for P0AG63 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG63
Entity ID: 49
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S18
r
75Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsR
Find proteins for P0A7T7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7T7
Entity ID: 50
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S19
s
82Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsS
Find proteins for P0A7U3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7U3
Entity ID: 51
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S20
t
86Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsT
Find proteins for P0A7U7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7U7
Entity ID: 52
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S21
u
71Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsU
Find proteins for P68679 (Escherichia coli (strain K12))
Go to UniProtKB:  P68679
Entity ID: 53
MoleculeChainsSequence LengthOrganismDetails
Peptide chain release factor 2
v
383Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: prfB (supK)
Find proteins for P07012 (Escherichia coli (strain K12))
Go to UniProtKB:  P07012
Entity ID: 54
MoleculeChainsSequence LengthOrganismDetails
Alternative ribosome-rescue factor A
w
57Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: arfA (yhdL)
Find proteins for P36675 (Escherichia coli (strain K12))
Go to UniProtKB:  P36675
Entity ID: 1
MoleculeChainsLengthOrganism
23S rRNAA2904Escherichia coli
Entity ID: 2
MoleculeChainsLengthOrganism
5S rRNAB118Escherichia coli
Entity ID: 32
MoleculeChainsLengthOrganism
16S rRNAa1533Escherichia coli
Entity ID: 55
MoleculeChainsLengthOrganism
P-site or E-site fMet-tRNA(fMet)x,y77Escherichia coli
Entity ID: 56
MoleculeChainsLengthOrganism
mRNAz18Escherichia coli
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
5
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
a, A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  12 Unique
IDChainsTypeFormula2D DiagramParent
PSU
Query on PSU
A, a
RNA LINKINGC9 H13 N2 O9 PU
5MC
Query on 5MC
A, a
RNA LINKINGC10 H16 N3 O8 PC
OMU
Query on OMU
A
RNA LINKINGC10 H15 N2 O9 PU
1MG
Query on 1MG
A
RNA LINKINGC11 H16 N5 O8 PG
OMC
Query on OMC
A
RNA LINKINGC10 H16 N3 O8 PC
MA6
Query on MA6
a
RNA LINKINGC12 H18 N5 O7 PA
2MG
Query on 2MG
a, A
RNA LINKINGC11 H16 N5 O8 PG
UR3
Query on UR3
a
RNA LINKINGC10 H15 N2 O9 PU
MEQ
Query on MEQ
v
L-PEPTIDE LINKINGC6 H12 N2 O3GLN
OMG
Query on OMG
A
RNA LINKINGC11 H16 N5 O8 PG
5MU
Query on 5MU
A
RNA LINKINGC10 H15 N2 O9 PU
4OC
Query on 4OC
a
RNA LINKINGC11 H18 N3 O8 PC
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.5 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical SciencesUnited StatesR01GM120552

Revision History 

  • Version 1.0: 2017-01-11
    Type: Initial release
  • Version 1.1: 2017-01-25
    Type: Database references
  • Version 1.2: 2017-02-08
    Type: Database references
  • Version 1.3: 2017-09-27
    Type: Author supporting evidence, Data collection
  • Version 1.4: 2018-07-18
    Type: Data collection, Experimental preparation
  • Version 1.5: 2018-10-03
    Type: Data collection, Other, Refinement description