4X65 image
Deposition Date 2014-12-06
Release Date 2015-11-18
Last Version Date 2025-02-19
Entry Detail
PDB ID:
4X65
Title:
Crystal Structure of 30S ribosomal subunit from Thermus thermophilus
Biological Source:
Source Organism:
Method Details:
Experimental Method:
Resolution:
3.35 Å
R-Value Free:
0.21
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 41 21 2
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:16S rRNA
Chain IDs:A
Chain Length:6
Number of Molecules:1
Biological Source:Thermus thermophilus HB8
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S2
Gene (Uniprot):rpsB
Chain IDs:B
Chain Length:11
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S3
Gene (Uniprot):rpsC
Chain IDs:C
Chain Length:207
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S4
Gene (Uniprot):rpsD
Chain IDs:D
Chain Length:208
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S5
Gene (Uniprot):rpsE
Chain IDs:E
Chain Length:151
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S6
Gene (Uniprot):rpsF
Chain IDs:F
Chain Length:101
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S7
Gene (Uniprot):rpsG
Chain IDs:G
Chain Length:155
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S8
Chain IDs:H
Chain Length:138
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S9
Gene (Uniprot):rpsI
Chain IDs:I
Chain Length:127
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S10
Gene (Uniprot):rpsJ
Chain IDs:J
Chain Length:99
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S11
Gene (Uniprot):rpsK
Chain IDs:K
Chain Length:119
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S12
Gene (Uniprot):rpsL
Chain IDs:L
Chain Length:125
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S13
Gene (Uniprot):rpsM
Chain IDs:M
Chain Length:118
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S14 type Z
Chain IDs:N
Chain Length:60
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S15
Gene (Uniprot):rpsO
Chain IDs:O
Chain Length:88
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S16
Gene (Uniprot):rpsP
Chain IDs:P
Chain Length:84
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S17
Chain IDs:Q
Chain Length:99
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S18
Gene (Uniprot):rpsR
Chain IDs:R
Chain Length:73
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S19
Gene (Uniprot):rpsS
Chain IDs:S
Chain Length:81
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S20
Gene (Uniprot):rpsT
Chain IDs:T
Chain Length:99
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein Thx
Gene (Uniprot):rpsU
Chain IDs:U
Chain Length:25
Number of Molecules:1
Biological Source:Thermus thermophilus (strain HB8 / ATCC 27634 / DSM 579)
Polymer Type:polyribonucleotide
Molecule:RNA (5'-D(*AP*(MA6)P*AP*UP*UP*U)-3')
Chain IDs:V (auth: a)
Chain Length:6
Number of Molecules:1
Biological Source:Thermus thermophilus
Polymer Type:polyribonucleotide
Molecule:RNA (5'-D(P*GP*AP*CP*UP*(70U)P*UP*UP*(12A)P*AP*(PSU)P*C)-3')
Chain IDs:W (auth: b)
Chain Length:11
Number of Molecules:1
Biological Source:Thermus thermophilus
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
2MG A G modified residue
4OC A C modified residue
5MC A C modified residue
7MG A G modified residue
M2G A G modified residue
MA6 A A modified residue
PSU A U modified residue
UR3 A U modified residue
Primary Citation
N(6)-methyladenosine in mRNA disrupts tRNA selection and translation-elongation dynamics.
Nat.Struct.Mol.Biol. 23 110 115 (2016)
PMID: 26751643 DOI: 10.1038/nsmb.3148

Abstact

N(6)-methylation of adenosine (forming m(6)A) is the most abundant post-transcriptional modification within the coding region of mRNA, but its role during translation remains unknown. Here, we used bulk kinetic and single-molecule methods to probe the effect of m(6)A in mRNA decoding. Although m(6)A base-pairs with uridine during decoding, as shown by X-ray crystallographic analyses of Thermus thermophilus ribosomal complexes, our measurements in an Escherichia coli translation system revealed that m(6)A modification of mRNA acts as a barrier to tRNA accommodation and translation elongation. The interaction between an m(6)A-modified codon and cognate tRNA echoes the interaction between a near-cognate codon and tRNA, because delay in tRNA accommodation depends on the position and context of m(6)A within codons and on the accuracy level of translation. Overall, our results demonstrate that chemical modification of mRNA can change translational dynamics.

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Primary Citation of related structures