3JCJ

Structures of ribosome-bound initiation factor 2 reveal the mechanism of subunit association


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.7 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

Structures of ribosome-bound initiation factor 2 reveal the mechanism of subunit association.

Sprink, T.Ramrath, D.J.Yamamoto, H.Yamamoto, K.Loerke, J.Ismer, J.Hildebrand, P.W.Scheerer, P.Burger, J.Mielke, T.Spahn, C.M.

(2016) Sci Adv 2: e1501502-e1501502

  • DOI: 10.1126/sciadv.1501502
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Throughout the four phases of protein biosynthesis-initiation, elongation, termination, and recycling-the ribosome is controlled and regulated by at least one specified translational guanosine triphosphatase (trGTPase). Although the structural basis ...

    Throughout the four phases of protein biosynthesis-initiation, elongation, termination, and recycling-the ribosome is controlled and regulated by at least one specified translational guanosine triphosphatase (trGTPase). Although the structural basis for trGTPase interaction with the ribosome has been solved for the last three steps of translation, the high-resolution structure for the key initiation trGTPase, initiation factor 2 (IF2), complexed with the ribosome, remains elusive. We determine the structure of IF2 complexed with a nonhydrolyzable guanosine triphosphate analog and initiator fMet-tRNAi (Met) in the context of the Escherichia coli ribosome to 3.7-Å resolution using cryo-electron microscopy. The structural analysis reveals previously unseen intrinsic conformational modes of the 70S initiation complex, establishing the mutual interplay of IF2 and initator transfer RNA (tRNA) with the ribsosome and providing the structural foundation for a mechanistic understanding of the final steps of translation initiation.


    Organizational Affiliation

    Institut für Medizinische Physik und Biophysik, Charité-Universitätsmedizin Berlin, Charitéplatz 1, 10117 Berlin, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S18
1
75Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsR
Find proteins for P0A7T7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7T7
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S21
2
71Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsU
Find proteins for P68679 (Escherichia coli (strain K12))
Go to UniProtKB:  P68679
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S20
3
87Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsT
Find proteins for P0A7U7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7U7
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L2
B
273Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplB
Find proteins for P60422 (Escherichia coli (strain K12))
Go to UniProtKB:  P60422
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L3
C
209Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplC
Find proteins for P60438 (Escherichia coli (strain K12))
Go to UniProtKB:  P60438
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L4
D
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: 10
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L5
E
179Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplE
Find proteins for P62399 (Escherichia coli (strain K12))
Go to UniProtKB:  P62399
Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L6
F
177Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplF
Find proteins for P0AG55 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG55
Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L9
G
149Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplI
Find proteins for P0A7R1 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7R1
Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L11
H
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: 14
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L13
I
142Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplM
Find proteins for P0AA10 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AA10
Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L14
J
123Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplN
Find proteins for P0ADY3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADY3
Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L15
K
144Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplO
Find proteins for P02413 (Escherichia coli (strain K12))
Go to UniProtKB:  P02413
Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L16
L
136Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplP
Find proteins for P0ADY7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADY7
Entity ID: 18
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L17
M
127Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplQ
Find proteins for P0AG44 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG44
Entity ID: 19
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L18
N
117Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplR
Find proteins for P0C018 (Escherichia coli (strain K12))
Go to UniProtKB:  P0C018
Entity ID: 20
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L19
O
115Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplS
Find proteins for P0A7K6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7K6
Entity ID: 21
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L20
P
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: 22
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L21
Q
103Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplU
Find proteins for P0AG48 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG48
Entity ID: 23
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L22
R
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: 24
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L23
S
100Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplW
Find proteins for P0ADZ0 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADZ0
Entity ID: 25
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L24
T
104Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplX
Find proteins for P60624 (Escherichia coli (strain K12))
Go to UniProtKB:  P60624
Entity ID: 26
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L25
U
94Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplY
Find proteins for P68919 (Escherichia coli (strain K12))
Go to UniProtKB:  P68919
Entity ID: 27
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L27
V
85Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmA
Find proteins for P0A7L8 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7L8
Entity ID: 28
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L28
W
78Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmB
Find proteins for P0A7M2 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7M2
Entity ID: 29
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L29
X
63Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmC
Find proteins for P0A7M6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7M6
Entity ID: 30
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L30
Y
59Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmD
Find proteins for P0AG51 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG51
Entity ID: 31
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L32
Z
57Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmF
Find proteins for P0A7N4 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7N4
Entity ID: 32
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L33
a
55Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmG
Find proteins for P0A7N9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7N9
Entity ID: 33
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L34
b
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: 34
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L35
c
65Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmI
Find proteins for P0A7Q1 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7Q1
Entity ID: 35
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L36
d
38Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpmJ
Find proteins for P0A7Q6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7Q6
Entity ID: 36
MoleculeChainsSequence LengthOrganismDetails
50S ribosomal protein L10
e
165Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rplJ
Find proteins for P0A7J3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7J3
Entity ID: 37
MoleculeChainsSequence LengthOrganismDetails
Translation initiation factor IF-2
f
890Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: infB (gicD, ssyG)
Find proteins for P0A705 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A705
Entity ID: 39
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S3
h
233Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsC
Find proteins for P0A7V3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7V3
Entity ID: 40
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S2
j
241Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsB
Find proteins for P0A7V0 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7V0
Entity ID: 41
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S5
k
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: 42
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S4
l
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: 43
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S7
m
179Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsG
Find proteins for P02359 (Escherichia coli (strain K12))
Go to UniProtKB:  P02359
Entity ID: 44
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S6
n
135Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsF
Find proteins for P02358 (Escherichia coli (strain K12))
Go to UniProtKB:  P02358
Entity ID: 45
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S9
o
130Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsI
Find proteins for P0A7X3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7X3
Entity ID: 46
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S8
p
130Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsH
Find proteins for P0A7W7 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7W7
Entity ID: 47
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S11
q
129Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsK
Find proteins for P0A7R9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7R9
Entity ID: 48
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S10
r
102Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsJ (nusE)
Find proteins for P0A7R5 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7R5
Entity ID: 49
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S13
s
118Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsM
Find proteins for P0A7S9 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7S9
Entity ID: 50
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S12
t
124Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsL (strA)
Find proteins for P0A7S3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7S3
Entity ID: 51
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S15
u
89Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsO (secC)
Find proteins for P0ADZ4 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADZ4
Entity ID: 53
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S14
w
101Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsN
Find proteins for P0AG59 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AG59
Entity ID: 54
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S17
x
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: 55
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S16
y
82Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsP
Find proteins for P0A7T3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7T3
Entity ID: 56
MoleculeChainsSequence LengthOrganismDetails
30S ribosomal protein S19
z
92Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: rpsS
Find proteins for P0A7U3 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A7U3
Entity ID: 1
MoleculeChainsLengthOrganism
5S ribosomal RNA0118Escherichia coli
Entity ID: 5
MoleculeChainsLengthOrganism
messenger RNA452Escherichia coli
Entity ID: 6
MoleculeChainsLengthOrganism
23S ribosomal RNAA2904Escherichia coli
Entity ID: 38
MoleculeChainsLengthOrganism
16S ribosomal RNAg1542Escherichia coli
Entity ID: 52
MoleculeChainsLengthOrganism
tRNAv77Escherichia coli
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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d
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
FME
Query on FME

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v
N-FORMYLMETHIONINE
C6 H11 N O3 S
PYUSHNKNPOHWEZ-YFKPBYRVSA-N
 Ligand Interaction
MG
Query on MG

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3, A, B, d, g, w
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
GNP
Query on GNP

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f
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
C10 H17 N6 O13 P3
UQABYHGXWYXDTK-UUOKFMHZSA-N
 Ligand Interaction
Modified Residues  4 Unique
IDChainsTypeFormula2D DiagramParent
PSU
Query on PSU
v
RNA LINKINGC9 H13 N2 O9 PU
4SU
Query on 4SU
v
RNA LINKINGC9 H13 N2 O8 P SU
5MU
Query on 5MU
v
RNA LINKINGC10 H15 N2 O9 PU
H2U
Query on H2U
v
RNA LINKINGC9 H15 N2 O9 PU
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.7 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-03-09
    Type: Initial release
  • Version 1.1: 2016-11-16
    Type: Database references
  • Version 1.2: 2018-07-18
    Type: Data collection