2UXC

Crystal structure of an extended tRNA anticodon stem loop in complex with its cognate mRNA UCGU in the context of the Thermus thermophilus 30S subunit.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.217 

wwPDB Validation 3D Report Full Report



Literature

Structures of Trnas with an Expanded Anticodon Loop in the Decoding Center of the 30S Ribosomal Subunit.

Dunham, C.M.Selmer, M.Phelps, S.S.Kelley, A.C.Suzuki, T.Joseph, S.Ramakrishnan, V.

(2007) RNA 13: 817

  • DOI: 10.1261/rna.367307
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • During translation, some +1 frameshift mRNA sites are decoded by frameshift suppressor tRNAs that contain an extra base in their anticodon loops. Similarly engineered tRNAs have been used to insert nonnatural amino acids into proteins. Here, we repor ...

    During translation, some +1 frameshift mRNA sites are decoded by frameshift suppressor tRNAs that contain an extra base in their anticodon loops. Similarly engineered tRNAs have been used to insert nonnatural amino acids into proteins. Here, we report crystal structures of two anticodon stem-loops (ASLs) from tRNAs known to facilitate +1 frameshifting bound to the 30S ribosomal subunit with their cognate mRNAs. ASL(CCCG) and ASL(ACCC) (5'-3' nomenclature) form unpredicted anticodon-codon interactions where the anticodon base 34 at the wobble position contacts either the fourth codon base or the third and fourth codon bases. In addition, we report the structure of ASL(ACGA) bound to the 30S ribosomal subunit with its cognate mRNA. The tRNA containing this ASL was previously shown to be unable to facilitate +1 frameshifting in competition with normal tRNAs (Hohsaka et al. 2001), and interestingly, it displays a normal anticodon-codon interaction. These structures show that the expanded anticodon loop of +1 frameshift promoting tRNAs are flexible enough to adopt conformations that allow three bases of the anticodon to span four bases of the mRNA. Therefore it appears that normal triplet pairing is not an absolute constraint of the decoding center.


    Organizational Affiliation

    MRC-Laboratory of Molecular Biology, Cambridge CB2 2QH, United Kingdom.



Macromolecules

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S2
B
256Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsBrps2TTHA0861
Find proteins for P80371 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80371
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S3
C
239Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsCrps3TTHA1686
Find proteins for P80372 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80372
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S4
D
209Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsDrps4TTHA1665
Find proteins for P80373 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P80373
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S5
E
162Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsETTHA1675
Find proteins for Q5SHQ5 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHQ5
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S6
F
101Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsFTTHA0245
Find proteins for Q5SLP8 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SLP8
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S8
H
138Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsHTTHA1678
Find proteins for P0DOY9 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P0DOY9
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S9
I
128Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsIrps9TTHA1464
Find proteins for P80374 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S10
J
105Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsJTTHA1693
Find proteins for Q5SHN7 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S11
K
129Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsKrps11TTHA1666
Find proteins for P80376 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S13
M
126Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsMrps13TTHA1667
Find proteins for P80377 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S14
N
61Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsZrpsNTTHA1679
Find proteins for P0DOY6 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P0DOY6
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Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S15
O
89Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsOTTHA1138
Find proteins for Q5SJ76 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S16
P
88Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsPTTHA1035
Find proteins for Q5SJH3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S17
Q
105Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsQTTHA1683
Find proteins for P0DOY7 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 18
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S18
R
88Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsRTTHA0243
Find proteins for Q5SLQ0 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SLQ0
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Entity ID: 19
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S19
S
93Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsSTTHA1688
Find proteins for Q5SHP2 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHP2
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Entity ID: 20
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S20
T
106Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsTrps20TTHA1397
Find proteins for P80380 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 21
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN THX
U
27Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsUTTHA1396
Find proteins for Q5SIH3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
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Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S12
L
135Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsLTTHA1697
Find proteins for Q5SHN3 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  Q5SHN3
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
RIBOSOMAL PROTEIN S7
G
156Thermus thermophilus HB8Mutation(s): 0 
Gene Names: rpsGrps7TTHA1696
Find proteins for P17291 (Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579))
Go to UniProtKB:  P17291
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  • Reference Sequence

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Entity ID: 1
MoleculeChainsLengthOrganism
16S RIBOSOMAL RNAA1522Thermus thermophilus HB8
  • Find similar nucleic acids by: Sequence   |   Structure
Entity ID: 22
MoleculeChainsLengthOrganism
A-SITE MESSENGER RNA FRAGMENT CGGGX18synthetic construct
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Entity ID: 23
MoleculeChainsLengthOrganism
ANTICODON STEM-LOOP OF TRANSFER RNA WITH ANTICODON ACGAY5synthetic construct
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PAR
Query on PAR

Download CCD File 
A
PAROMOMYCIN
C23 H45 N5 O14
UOZODPSAJZTQNH-LSWIJEOBSA-N
 Ligand Interaction
ZN
Query on ZN

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A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
K
Query on K

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A
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.255 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.217 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 401.822α = 90
b = 401.822β = 90
c = 175.104γ = 90
Software Package:
Software NamePurpose
CNSrefinement
XDSdata reduction
XDSdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-05-08
    Type: Initial release
  • Version 1.1: 2015-05-20
    Changes: Atomic model, Data collection, Derived calculations, Other, Refinement description, Version format compliance
  • Version 1.2: 2015-05-27
    Changes: Database references
  • Version 2.0: 2019-05-08
    Changes: Advisory, Atomic model, Data collection, Experimental preparation, Other