3J9Z

Activation of GTP Hydrolysis in mRNA-tRNA Translocation by Elongation Factor G


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 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

Activation of GTP hydrolysis in mRNA-tRNA translocation by elongation factor G.

Li, W.Liu, Z.Koripella, R.K.Langlois, R.Sanyal, S.Frank, J.

(2015) Sci Adv 1: e1500169-e1500169

  • DOI: 10.1126/sciadv.1500169
  • Primary Citation of Related Structures:  
    3J9Z, 3JA1

  • PubMed Abstract: 
  • During protein synthesis, elongation of the polypeptide chain by each amino acid is followed by a translocation step in which mRNA and transfer RNA (tRNA) are advanced by one codon. This crucial step is catalyzed by elongation factor G (EF-G), a guanosine triphosphatase (GTPase), and accompanied by a rotation between the two ribosomal subunits ...

    During protein synthesis, elongation of the polypeptide chain by each amino acid is followed by a translocation step in which mRNA and transfer RNA (tRNA) are advanced by one codon. This crucial step is catalyzed by elongation factor G (EF-G), a guanosine triphosphatase (GTPase), and accompanied by a rotation between the two ribosomal subunits. A mutant of EF-G, H91A, renders the factor impaired in guanosine triphosphate (GTP) hydrolysis and thereby stabilizes it on the ribosome. We use cryogenic electron microscopy (cryo-EM) at near-atomic resolution to investigate two complexes formed by EF-G H91A in its GTP state with the ribosome, distinguished by the presence or absence of the intersubunit rotation. Comparison of these two structures argues in favor of a direct role of the conserved histidine in the switch II loop of EF-G in GTPase activation, and explains why GTP hydrolysis cannot proceed with EF-G bound to the unrotated form of the ribosome.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biophysics, Columbia University, 2-221 Blackwell, 165 West 168th Street, New York, NY 10032, USA ; Howard Hughes Medical Institute, Columbia University, New York, NY 10032, USA ; Department of Biological Sciences, Columbia University, New York, NY 10027, USA.



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30S ribosomal protein S10D [auth SJ]103Escherichia coliMutation(s): 0 
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30S ribosomal protein S11E [auth SK]128Escherichia coliMutation(s): 0 
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30S ribosomal protein S12F [auth SL]123Escherichia coliMutation(s): 0 
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30S ribosomal protein S13G [auth SM]117Escherichia coliMutation(s): 0 
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30S ribosomal protein S14H [auth SN]100Escherichia coliMutation(s): 0 
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30S ribosomal protein S15I [auth SO]88Escherichia coliMutation(s): 0 
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30S ribosomal protein S16J [auth SP]82Escherichia coliMutation(s): 0 
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30S ribosomal protein S17K [auth SQ]83Escherichia coliMutation(s): 0 
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30S ribosomal protein S18L [auth SR]74Escherichia coliMutation(s): 0 
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30S ribosomal protein S19M [auth SS]91Escherichia coliMutation(s): 0 
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30S ribosomal protein S2N [auth SB]240Escherichia coliMutation(s): 0 
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30S ribosomal protein S20O [auth ST]86Escherichia coliMutation(s): 0 
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30S ribosomal protein S21P [auth SU]70Escherichia coliMutation(s): 0 
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30S ribosomal protein S3Q [auth SC]232Escherichia coliMutation(s): 0 
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30S ribosomal protein S4R [auth SD]205Escherichia coliMutation(s): 0 
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30S ribosomal protein S5S [auth SE]166Escherichia coliMutation(s): 0 
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30S ribosomal protein S6T [auth SF]135Escherichia coliMutation(s): 0 
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30S ribosomal protein S7U [auth SG]178Escherichia coliMutation(s): 0 
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30S ribosomal protein S8V [auth SH]129Escherichia coliMutation(s): 0 
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30S ribosomal protein S9W [auth SI]129Escherichia coliMutation(s): 0 
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Elongation factor GX [auth S1]702Escherichia coliMutation(s): 1 
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50S ribosomal protein L1AA [auth LC]234Escherichia coliMutation(s): 0 
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50S ribosomal protein L19BA [auth LM]114Escherichia coliMutation(s): 0 
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50S ribosomal protein L2CA [auth LN]272Escherichia coliMutation(s): 0 
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50S ribosomal protein L20DA [auth LO]117Escherichia coliMutation(s): 0 
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50S ribosomal protein L21EA [auth LP]103Escherichia coliMutation(s): 0 
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50S ribosomal protein L22FA [auth LQ]110Escherichia coliMutation(s): 0 
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50S ribosomal protein L23GA [auth LR]100Escherichia coliMutation(s): 0 
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50S ribosomal protein L24HA [auth LS]103Escherichia coliMutation(s): 0 
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50S ribosomal protein L25IA [auth LT]94Escherichia coliMutation(s): 0 
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50S ribosomal protein L27JA [auth LU]84Escherichia coliMutation(s): 0 
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50S ribosomal protein L28KA [auth LV]77Escherichia coliMutation(s): 0 
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50S ribosomal protein L10LA [auth LD]164Escherichia coliMutation(s): 0 
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50S ribosomal protein L29MA [auth LW]63Escherichia coliMutation(s): 0 
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50S ribosomal protein L3NA [auth LX]209Escherichia coliMutation(s): 0 
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50S ribosomal protein L30OA [auth LY]58Escherichia coliMutation(s): 0 
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50S ribosomal protein L32PA [auth L1]56Escherichia coliMutation(s): 0 
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50S ribosomal protein L33QA [auth L2]54Escherichia coliMutation(s): 0 
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50S ribosomal protein L34RA [auth L3]46Escherichia coliMutation(s): 0 
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50S ribosomal protein L35SA [auth L4]64Escherichia coliMutation(s): 0 
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50S ribosomal protein L36TA [auth L5]38Escherichia coliMutation(s): 0 
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50S ribosomal protein L4UA [auth L6]201Escherichia coliMutation(s): 0 
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50S ribosomal protein L11VA [auth LE]141Escherichia coliMutation(s): 0 
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50S ribosomal protein L5WA [auth L7]178Escherichia coliMutation(s): 0 
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50S ribosomal protein L6XA [auth L8]176Escherichia coliMutation(s): 0 
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50S ribosomal protein L9YA [auth L9]149Escherichia coliMutation(s): 0 
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50S ribosomal protein L13ZA [auth LF]142Escherichia coliMutation(s): 0 
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50S ribosomal protein L14AB [auth LG]123Escherichia coliMutation(s): 0 
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50S ribosomal protein L15BB [auth LH]144Escherichia coliMutation(s): 0 
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50S ribosomal protein L16CB [auth LI]136Escherichia coliMutation(s): 0 
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50S ribosomal protein L17DB [auth LJ]127Escherichia coliMutation(s): 0 
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50S ribosomal protein L18EB [auth LK]117Escherichia coliMutation(s): 0 
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50S ribosomal protein L31FB [auth LZ]70Escherichia coliMutation(s): 0 
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16S ribosomal RNAA [auth SA]1542Escherichia coli
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P-tRNAB [auth S6]77Thermus thermophilus
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MoleculeChainsLengthOrganismImage
E-tRNAC [auth S7]74Thermus thermophilus
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23S ribosomal RNAY [auth LA]2904Escherichia coli
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5S ribosomal RNAZ [auth LB]120Escherichia coli
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP

Download Ideal Coordinates CCD File 
GB [auth S1]GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-01
    Type: Initial release
  • Version 1.1: 2015-08-12
    Changes: Database references
  • Version 1.2: 2018-07-18
    Changes: Data collection