1QVF

Structure of a deacylated tRNA minihelix bound to the E site of the large ribosomal subunit of Haloarcula marismortui


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.196 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structures of deacylated tRNA mimics bound to the E site of the large ribosomal subunit

Schmeing, T.M.Moore, P.B.Steitz, T.A.

(2003) RNA 9: 1345-1352

  • DOI: 10.1261/rna.5120503
  • Primary Citation of Related Structures:  
    1QVG, 1QVF

  • PubMed Abstract: 
  • During translation, tRNAs cycle through three binding sites on the ribosome: the A, the P, and the E sites. We have determined the structures of complexes between the Haloarcula marismortui large ribosomal subunit and two different E site substrates: a d ...

    During translation, tRNAs cycle through three binding sites on the ribosome: the A, the P, and the E sites. We have determined the structures of complexes between the Haloarcula marismortui large ribosomal subunit and two different E site substrates: a deacylated tRNA acceptor stem minihelix and a CCA-acceptor end. Both of these tRNA mimics contain analogs of adenosine 76, the component responsible for a large proportion of E site binding affinity. They bind in the center of the loop-extension of protein L44e, and make specific contacts with both L44e and 23S rRNA including bases that are conserved in all three kingdoms of life. These contacts are consistent with the footprinting, protection, and cross-linking data that have identified the E site biochemically. These structures explain the specificity of the E site for deacylated tRNAs, as it is too small to accommodate any relevant aminoacyl-tRNA. The orientation of the minihelix suggests that it may mimic the P/E hybrid state. It appears that the E site on the 50S subunit was formed by only RNA in the last common ancestor of the three kingdoms, since the proteins at the E sites of H. marismortui and Deinucoccus radiodurans large subunits are not homologous.


    Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut 06520-8114, USA.



Macromolecules

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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L2P A239Haloarcula marismortuiMutation(s): 0 
Find proteins for P20276 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L3P B337Haloarcula marismortuiMutation(s): 0 
Find proteins for P20279 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L4E C246Haloarcula marismortuiMutation(s): 0 
Find proteins for P12735 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L5P D176Haloarcula marismortuiMutation(s): 0 
Find proteins for P14124 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L6P E177Haloarcula marismortuiMutation(s): 0 
Find proteins for P14135 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L7Ae F119Haloarcula marismortuiMutation(s): 0 
Find proteins for P12743 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetailsImage
50S RIBOSOMAL PROTEIN L10E G348Haloarcula marismortuiMutation(s): 0 
Find proteins for P15825 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetailsImage
L10 Ribosomal Protein H167Haloarcula marismortuiMutation(s): 0 
Find proteins for P60617 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L13P I145Haloarcula marismortuiMutation(s): 0 
Find proteins for P29198 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L14P J132Haloarcula marismortuiMutation(s): 0 
Find proteins for P22450 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L15P K164Haloarcula marismortuiMutation(s): 0 
Find proteins for P12737 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 15
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L15 Ribosomal Protein L194Haloarcula marismortuiMutation(s): 0 
Find proteins for P60618 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 16
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L18P M186Haloarcula marismortuiMutation(s): 0 
Find proteins for P14123 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 17
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L18e N115Haloarcula marismortuiMutation(s): 0 
Find proteins for P12733 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 18
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L19E O148Haloarcula marismortuiMutation(s): 0 
Find proteins for P14119 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 19
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L21e P95Haloarcula marismortuiMutation(s): 0 
Find proteins for P12734 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 20
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50S ribosomal protein L22P Q154Haloarcula marismortuiMutation(s): 0 
Find proteins for P10970 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 21
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50S ribosomal protein L23P R84Haloarcula marismortuiMutation(s): 0 
Find proteins for P12732 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 22
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L24P S119Haloarcula marismortuiMutation(s): 0 
Find proteins for P10972 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 23
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L24E T66Haloarcula marismortuiMutation(s): 0 
Find proteins for P14116 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 24
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L29P U70Haloarcula marismortuiMutation(s): 0 
Find proteins for P10971 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 25
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L30P V154Haloarcula marismortuiMutation(s): 0 
Find proteins for P14121 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 26
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L31e W91Haloarcula marismortuiMutation(s): 0 
Find proteins for P18138 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 27
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L32E X240Haloarcula marismortuiMutation(s): 0 
Find proteins for P12736 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 28
MoleculeChainsSequence LengthOrganismDetailsImage
L37Ae 50S ribosomal protein Y73Haloarcula marismortuiMutation(s): 0 
Find proteins for P60619 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 29
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L37e Z56Haloarcula marismortuiMutation(s): 0 
Find proteins for P32410 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 30
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L39e 148Haloarcula marismortuiMutation(s): 0 
Find proteins for P22452 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 31
MoleculeChainsSequence LengthOrganismDetailsImage
50S ribosomal protein L44E 292Haloarcula marismortuiMutation(s): 0 
Find proteins for P32411 (Haloarcula marismortui (strain ATCC 43049 / DSM 3752 / JCM 8966 / VKM B-1809))
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Entity ID: 1
MoleculeChainsLengthOrganismImage
23S ribosomal rna02922Haloarcula marismortui
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Entity ID: 2
MoleculeChainsLengthOrganismImage
5S ribosomal RNA9122Haloarcula marismortui
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Entity ID: 3
MoleculeChainsLengthOrganismImage
Deacylated tRNA minihelix328N/A
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CD
Query on CD

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2, N, T, Y, Z
CADMIUM ION
Cd
WLZRMCYVCSSEQC-UHFFFAOYSA-N
 Ligand Interaction
K
Query on K

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0
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

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0, 2, A, B, I, K, L, M, N, Q, X
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
MG
Query on MG

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0, 2, 9, A, B, J, S, X, Y
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

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0, 9, A, C, H, I, K, L, P, Q, R
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.10 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.196 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 213.522α = 90
b = 300.817β = 90
c = 574.861γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
CNSrefinement
HKL-2000data scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-11-11
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description
  • Version 1.4: 2017-11-29
    Changes: Database references