2VQE

Modified uridines with C5-methylene substituents at the first position of the tRNA anticodon stabilize U-G wobble pairing during decoding


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.257 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.5 of the entry. See complete history


Literature

Modified Uridines with C5-Methylene Substituents at the First Position of the tRNA Anticodon Stabilize U.G Wobble Pairing During Decoding.

Kurata, S.Weixlbaumer, A.Ohtsuki, T.Shimazaki, T.Wada, T.Kirino, Y.Takai, K.Watanabe, K.Ramakrishnan, V.Suzuki, T.

(2008) J Biol Chem 283: 18801

  • DOI: https://doi.org/10.1074/jbc.M800233200
  • Primary Citation of Related Structures:  
    2VQE, 2VQF

  • PubMed Abstract: 

    Post-transcriptional modifications at the first (wobble) position of the tRNA anticodon participate in precise decoding of the genetic code. To decode codons that end in a purine (R) (i.e. NNR), tRNAs frequently utilize 5-methyluridine derivatives (xm(5)U) at the wobble position. However, the functional properties of the C5-substituents of xm(5)U in codon recognition remain elusive. We previously found that mitochondrial tRNAs(Leu(UUR)) with pathogenic point mutations isolated from MELAS (mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes) patients lacked the 5-taurinomethyluridine (taum(5)U) modification and caused a decoding defect. Here, we constructed Escherichia coli tRNAs(Leu(UUR)) with or without xm(5)U modifications at the wobble position and measured their decoding activities in an in vitro translation as well as by A-site tRNA binding. In addition, the decoding properties of tRNA(Arg) lacking mnm(5)U modification in a knock-out strain of the modifying enzyme (DeltamnmE) were examined by pulse labeling using reporter constructs with consecutive AGR codons. Our results demonstrate that the xm(5)U modification plays a critical role in decoding NNG codons by stabilizing U.G pairing at the wobble position. Crystal structures of an anticodon stem-loop containing taum(5)U interacting with a UUA or UUG codon at the ribosomal A-site revealed that the taum(5)U.G base pair does not have classical U.G wobble geometry. These structures provide help to explain how the taum(5)U modification enables efficient decoding of UUG codons.


  • Organizational Affiliation

    Department of Chemistry and Biotechnology, Graduate School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.


Macromolecules

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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S2256Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S3239Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S4209Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S5162Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S6101Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S7156Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S8138Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S9128Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S10105Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 11
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S11129Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 12
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S12135Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 13
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S13126Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 14
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S14 TYPE Z61Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 15
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S1589Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 16
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S1688Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 17
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S17105Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 18
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S1888Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 19
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S1993Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 20
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN S20106Thermus thermophilus HB8Mutation(s): 0 
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Entity ID: 21
MoleculeChains Sequence LengthOrganismDetailsImage
30S RIBOSOMAL PROTEIN THX27Thermus thermophilus HB8Mutation(s): 0 
UniProt
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Entity ID: 1
MoleculeChains LengthOrganismImage
16S RRNA1,522Thermus thermophilus HB8
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Entity ID: 22
MoleculeChains LengthOrganismImage
5'-R(*UP*UP*AP*AP*AP*AP)-3'V [auth X]6Thermus thermophilus HB8
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Entity ID: 23
MoleculeChains LengthOrganismImage
5'-R(*GP*CP*AP*UP*GP*CP*UP*TM2P*AP*AP*AP *AP*CP*AP*UP*GP*CP)-3'W [auth Y]17Thermus thermophilus HB8
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
PAR
Query on PAR

Download Ideal Coordinates CCD File 
QJ [auth A]PAROMOMYCIN
C23 H45 N5 O14
UOZODPSAJZTQNH-LSWIJEOBSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
BK [auth N],
SJ [auth D]
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
K
Query on K

Download Ideal Coordinates CCD File 
AI [auth A]
AJ [auth A]
BI [auth A]
BJ [auth A]
CI [auth A]
AI [auth A],
AJ [auth A],
BI [auth A],
BJ [auth A],
CI [auth A],
CJ [auth A],
DI [auth A],
DJ [auth A],
DK [auth N],
EI [auth A],
EJ [auth A],
EK [auth P],
FI [auth A],
FJ [auth A],
GI [auth A],
GJ [auth A],
GK [auth R],
HI [auth A],
HJ [auth A],
HK [auth T],
II [auth A],
IJ [auth A],
JI [auth A],
JJ [auth A],
KI [auth A],
KJ [auth A],
LI [auth A],
LJ [auth A],
MI [auth A],
MJ [auth A],
NI [auth A],
NJ [auth A],
OH [auth A],
OI [auth A],
OJ [auth A],
PH [auth A],
PI [auth A],
PJ [auth A],
QH [auth A],
QI [auth A],
RH [auth A],
RI [auth A],
SH [auth A],
SI [auth A],
TH [auth A],
TI [auth A],
UH [auth A],
UI [auth A],
VH [auth A],
VI [auth A],
VJ [auth E],
WH [auth A],
WI [auth A],
WJ [auth E],
XH [auth A],
XI [auth A],
XJ [auth E],
YH [auth A],
YI [auth A],
ZH [auth A],
ZI [auth A],
ZJ [auth I]
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
AA [auth A]
AB [auth A]
AC [auth A]
AD [auth A]
AE [auth A]
AA [auth A],
AB [auth A],
AC [auth A],
AD [auth A],
AE [auth A],
AF [auth A],
AG [auth A],
AH [auth A],
AK [auth M],
BA [auth A],
BB [auth A],
BC [auth A],
BD [auth A],
BE [auth A],
BF [auth A],
BG [auth A],
BH [auth A],
CA [auth A],
CB [auth A],
CC [auth A],
CD [auth A],
CE [auth A],
CF [auth A],
CG [auth A],
CH [auth A],
CK [auth N],
DA [auth A],
DB [auth A],
DC [auth A],
DD [auth A],
DE [auth A],
DF [auth A],
DG [auth A],
DH [auth A],
EA [auth A],
EB [auth A],
EC [auth A],
ED [auth A],
EE [auth A],
EF [auth A],
EG [auth A],
EH [auth A],
FA [auth A],
FB [auth A],
FC [auth A],
FD [auth A],
FE [auth A],
FF [auth A],
FG [auth A],
FH [auth A],
FK [auth Q],
GA [auth A],
GB [auth A],
GC [auth A],
GD [auth A],
GE [auth A],
GF [auth A],
GG [auth A],
GH [auth A],
HA [auth A],
HB [auth A],
HC [auth A],
HD [auth A],
HE [auth A],
HF [auth A],
HG [auth A],
HH [auth A],
IA [auth A],
IB [auth A],
IC [auth A],
ID [auth A],
IE [auth A],
IF [auth A],
IG [auth A],
IH [auth A],
JA [auth A],
JB [auth A],
JC [auth A],
JD [auth A],
JE [auth A],
JF [auth A],
JG [auth A],
JH [auth A],
KA [auth A],
KB [auth A],
KC [auth A],
KD [auth A],
KE [auth A],
KF [auth A],
KG [auth A],
KH [auth A],
LA [auth A],
LB [auth A],
LC [auth A],
LD [auth A],
LE [auth A],
LF [auth A],
LG [auth A],
LH [auth A],
MA [auth A],
MB [auth A],
MC [auth A],
MD [auth A],
ME [auth A],
MF [auth A],
MG [auth A],
MH [auth A],
NA [auth A],
NB [auth A],
NC [auth A],
ND [auth A],
NE [auth A],
NF [auth A],
NG [auth A],
NH [auth A],
OA [auth A],
OB [auth A],
OC [auth A],
OD [auth A],
OE [auth A],
OF [auth A],
OG [auth A],
PA [auth A],
PB [auth A],
PC [auth A],
PD [auth A],
PE [auth A],
PF [auth A],
PG [auth A],
QA [auth A],
QB [auth A],
QC [auth A],
QD [auth A],
QE [auth A],
QF [auth A],
QG [auth A],
RA [auth A],
RB [auth A],
RC [auth A],
RD [auth A],
RE [auth A],
RF [auth A],
RG [auth A],
RJ [auth B],
SA [auth A],
SB [auth A],
SC [auth A],
SD [auth A],
SE [auth A],
SF [auth A],
SG [auth A],
TA [auth A],
TB [auth A],
TC [auth A],
TD [auth A],
TE [auth A],
TF [auth A],
TG [auth A],
TJ [auth D],
UA [auth A],
UB [auth A],
UC [auth A],
UD [auth A],
UE [auth A],
UF [auth A],
UG [auth A],
UJ [auth E],
VA [auth A],
VB [auth A],
VC [auth A],
VD [auth A],
VE [auth A],
VF [auth A],
VG [auth A],
WA [auth A],
WB [auth A],
WC [auth A],
WD [auth A],
WE [auth A],
WF [auth A],
WG [auth A],
X [auth A],
XA [auth A],
XB [auth A],
XC [auth A],
XD [auth A],
XE [auth A],
XF [auth A],
XG [auth A],
Y [auth A],
YA [auth A],
YB [auth A],
YC [auth A],
YD [auth A],
YE [auth A],
YF [auth A],
YG [auth A],
YJ [auth I],
Z [auth A],
ZA [auth A],
ZB [auth A],
ZC [auth A],
ZD [auth A],
ZE [auth A],
ZF [auth A],
ZG [auth A]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.257 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 401.998α = 90
b = 401.998β = 90
c = 175.648γ = 90
Software Package:
Software NamePurpose
CNSrefinement
XDSdata reduction
XSCALEdata scaling
CNSphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-04-29
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-07-12
    Changes: Advisory, Derived calculations
  • Version 1.4: 2018-11-21
    Changes: Advisory, Data collection, Derived calculations
  • Version 1.5: 2023-12-13
    Changes: Data collection, Database references, Derived calculations, Other, Refinement description, Structure summary