1HR0

CRYSTAL STRUCTURE OF INITIATION FACTOR IF1 BOUND TO THE 30S RIBOSOMAL SUBUNIT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of an initiation factor bound to the 30S ribosomal subunit.

Carter, A.P.Clemons Jr., W.M.Brodersen, D.E.Morgan-Warren, R.J.Hartsch, T.Wimberly, B.T.Ramakrishnan, V.

(2001) Science 291: 498-501


  • PubMed Abstract: 
  • Initiation of translation at the correct position on messenger RNA is essential for accurate protein synthesis. In prokaryotes, this process requires three initiation factors: IF1, IF2, and IF3. Here we report the crystal structure of a complex of IF ...

    Initiation of translation at the correct position on messenger RNA is essential for accurate protein synthesis. In prokaryotes, this process requires three initiation factors: IF1, IF2, and IF3. Here we report the crystal structure of a complex of IF1 and the 30S ribosomal subunit. Binding of IF1 occludes the ribosomal A site and flips out the functionally important bases A1492 and A1493 from helix 44 of 16S RNA, burying them in pockets in IF1. The binding of IF1 causes long-range changes in the conformation of H44 and leads to movement of the domains of 30S with respect to each other. The structure explains how localized changes at the ribosomal A site lead to global alterations in the conformation of the 30S subunit.


    Related Citations: 
    • The Structure of the 30S Ribosomal Subunit
      Wimberly, B.T.,Brodersen, D.E.,Clemons Jr., W.M.,Morgan-Warren, R.,Carter, A.P.,Vonrhein, C.,Hartsch, T.,Ramakrishnan, V.
      (2000) Nature 407: 327
    • Functional Insights from the Structure of the 30S Ribosomal Subunit and its Interactions with Antibiotics
      Carter, A.P.,Clemons Jr., W.M.,Brodersen, D.E.,Morgan-Warren, R.J.,Mimberly, B.T.,Ramakrishnan, V.
      (2000) Nature 407: 340
    • Structure of a Bacterial 30S Ribosomal Subunit at 5.5A Resolution
      Clemons Jr., W.M.,May, J.L.C.,Wimberly, B.T.,Mccutcheon, J.P.,Capel, M.S.,Ramakrishnan, V.
      (1999) Nature 400: 833


    Organizational Affiliation

    Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S2
B
256Thermus 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: 4
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S3
C
239Thermus 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: 5
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S4
D
209Thermus 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: 6
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S5
E
162Thermus 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: 7
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: 8
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S7
G
156Thermus 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: 9
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S8
H
138Thermus aquaticusMutation(s): 0 
Gene Names: rpsH
Find proteins for A0A0M9AFS9 (Thermus aquaticus)
Go to UniProtKB:  A0A0M9AFS9
Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S9
I
128Thermus 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: 11
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S10
J
105Thermus 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: 12
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S11
K
129Thermus 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: 13
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S12
L
135Thermus 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: 14
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S13
M
126Thermus 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: 15
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S14
N
61Thermus aquaticusMutation(s): 0 
Gene Names: rpsZ (rpsN)
Find proteins for A0A0N0BLP2 (Thermus aquaticus)
Go to UniProtKB:  A0A0N0BLP2
Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S15
O
89Thermus 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: 17
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S16
P
88Thermus 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: 18
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S17
Q
105Thermus aquaticusMutation(s): 0 
Gene Names: rpsQ
Find proteins for A0A0N0BLS5 (Thermus aquaticus)
Go to UniProtKB:  A0A0N0BLS5
Entity ID: 19
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S18
R
88Thermus 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: 20
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S19
S
93Thermus 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: 21
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN S20
T
106Thermus 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: 22
MoleculeChainsSequence LengthOrganismDetails
30S RIBOSOMAL PROTEIN THX
V
26Thermus 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: 23
MoleculeChainsSequence LengthOrganismDetails
TRANSLATION INITIATION FACTOR
W
71Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)Mutation(s): 0 
Gene Names: infA
Find proteins for Q5SHR1 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHR1
Entity ID: 1
MoleculeChainsLengthOrganism
16S RIBOSOMAL RNAA1522Thermus thermophilus
Entity ID: 2
MoleculeChainsLengthOrganism
FRAGMENT OF MESSENGER RNAX6Thermus thermophilus
Small Molecules
Ligands 2 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
MG
Query on MG

Download SDF File 
Download CCD File 
A, W
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.218 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 399.581α = 90.00
b = 399.581β = 90.00
c = 176.320γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
HKL-2000data reduction
HKL-2000data collection
CNSrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-01-24
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance