7QGR image
Deposition Date 2021-12-09
Release Date 2022-06-22
Last Version Date 2024-10-16
Entry Detail
PDB ID:
7QGR
Keywords:
RIBOSOME
Title:
Structure of the SmrB-bound E. coli disome - collided 70S ribosome
Biological Source:
Source Organism:
Escherichia coli (Taxon ID: 562)
Vibrio alginolyticus (Taxon ID: 663)
Host Organism:
Escherichia coli
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
5.70 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7QGR validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:16S rRNA
Chain IDs:JA (auth: 0)
Chain Length:1539
Number of Molecules:1
Biological Source:Escherichia coli
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S2
Gene (Uniprot):rpsB
Chain IDs:KA (auth: 1)
Chain Length:239
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7V0 Pfam ID:PF00318
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S3
Gene (Uniprot):rpsC
Chain IDs:LA (auth: 2)
Chain Length:218
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7V3 Pfam ID:PF07650, PF00189
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S4
Chain IDs:MA (auth: 3)
Chain Length:206
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7V8 Pfam ID:PF00163, PF01479
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S5
Chain IDs:NA (auth: 4)
Chain Length:162
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7W1 Pfam ID:PF00333, PF03719
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S6, non-modified isoform
Gene (Uniprot):rpsF
Chain IDs:OA (auth: 5)
Chain Length:131
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P02358 Pfam ID:PF01250
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S7
Gene (Uniprot):rpsG
Chain IDs:PA (auth: 6)
Chain Length:152
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P02359 Pfam ID:PF00177
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S8
Chain IDs:QA (auth: 7)
Chain Length:130
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7W7 Pfam ID:PF00410
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S9
Chain IDs:RA (auth: 8)
Chain Length:130
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7X3 Pfam ID:PF00380
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S10
Gene (Uniprot):rpsJ
Chain IDs:SA (auth: 9)
Chain Length:103
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7R5 Pfam ID:PF00338
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S11
Chain IDs:TA (auth: A)
Chain Length:129
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7R9 Pfam ID:PF00411
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S12
Chain IDs:UA (auth: B)
Chain Length:124
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7S3 Pfam ID:PF00164
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L1
Chain IDs:FA (auth: C)
Chain Length:115
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7L0 Pfam ID:PF00687
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S13
Chain IDs:VA (auth: D)
Chain Length:118
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7S9 Pfam ID:PF00416
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S14
Chain IDs:WA (auth: E)
Chain Length:103
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0AG59 Pfam ID:PF00253
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S15
Gene (Uniprot):rpsO
Chain IDs:XA (auth: F)
Chain Length:110
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0ADZ4 Pfam ID:PF00312
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S16
Gene (Uniprot):rpsP
Chain IDs:YA (auth: G)
Chain Length:82
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7T3 Pfam ID:PF00886
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S17
Chain IDs:ZA (auth: H)
Chain Length:84
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0AG63 Pfam ID:PF00366
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S18
Chain IDs:AB (auth: I)
Chain Length:75
Number of Molecules:1
Biological Source:Escherichia coli
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S19
Chain IDs:BB (auth: J)
Chain Length:85
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7U3 Pfam ID:PF00203
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S20
Gene (Uniprot):rpsT
Chain IDs:CB (auth: K)
Chain Length:87
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7U7 Pfam ID:PF01649
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L31
Chain IDs:EA (auth: L)
Chain Length:70
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7M9 Pfam ID:PF01197
Polymer Type:polyribonucleotide
Molecule:P-site tRNA
Chain IDs:HA (auth: M)
Chain Length:75
Number of Molecules:1
Biological Source:Escherichia coli
Polymer Type:polyribonucleotide
Molecule:23S rRNA
Chain IDs:DA (auth: N)
Chain Length:57
Number of Molecules:1
Biological Source:Escherichia coli
Polymer Type:polyribonucleotide
Molecule:5S rRNA
Chain IDs:A (auth: O)
Chain Length:120
Number of Molecules:1
Biological Source:Escherichia coli
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L2
Gene (Uniprot):rplB
Chain IDs:B (auth: P)
Chain Length:46
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P60422 Pfam ID:PF00181, PF03947
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L3
Chain IDs:C (auth: Q)
Chain Length:209
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P60438 Pfam ID:PF00297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L4
Gene (Uniprot):rplD
Chain IDs:D (auth: R)
Chain Length:55
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P60723 Pfam ID:PF00573
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L5
Gene (Uniprot):rplE
Chain IDs:E (auth: S)
Chain Length:179
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P62399 Pfam ID:PF00281, PF00673
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L6
Gene (Uniprot):rplF
Chain IDs:F (auth: T)
Chain Length:557
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0AG55 Pfam ID:PF00347
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L9
Gene (Uniprot):rplI
Chain IDs:GA (auth: U)
Chain Length:149
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7R1 Pfam ID:PF01281, PF03948
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L11
Gene (Uniprot):rplK
Chain IDs:G (auth: V)
Chain Length:182
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7J7 Pfam ID:PF03946, PF00298
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L13
Gene (Uniprot):rplM
Chain IDs:H (auth: W)
Chain Length:142
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0AA10 Pfam ID:PF00572
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L14
Gene (Uniprot):rplN
Chain IDs:I (auth: X)
Chain Length:692
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0ADY3 Pfam ID:PF00238
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L15
Gene (Uniprot):rplO
Chain IDs:J (auth: Y)
Chain Length:144
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P02413 Pfam ID:PF00828
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L16
Gene (Uniprot):rplP
Chain IDs:K (auth: Z)
Chain Length:136
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0ADY7 Pfam ID:PF00252
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L17
Chain IDs:L (auth: a)
Chain Length:129
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0AG44 Pfam ID:PF01196
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L18
Gene (Uniprot):rplR
Chain IDs:M (auth: b)
Chain Length:124
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0C018 Pfam ID:PF00861
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L19
Gene (Uniprot):rplS
Chain IDs:N (auth: c)
Chain Length:115
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7K6 Pfam ID:PF01245
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L20
Gene (Uniprot):rplT
Chain IDs:O (auth: d)
Chain Length:118
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7L3 Pfam ID:PF00453
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L21
Gene (Uniprot):rplU
Chain IDs:P (auth: e)
Chain Length:103
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0AG48 Pfam ID:PF00829
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L22
Gene (Uniprot):rplV
Chain IDs:Q (auth: f)
Chain Length:110
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P61175 Pfam ID:PF00237
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L23
Chain IDs:R (auth: g)
Chain Length:82
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0ADZ0 Pfam ID:PF00276
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L24
Gene (Uniprot):rplX
Chain IDs:S (auth: h)
Chain Length:84
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P60624 Pfam ID:PF00467, PF17136
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L25
Gene (Uniprot):rplY
Chain IDs:T (auth: i)
Chain Length:75
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P68919 Pfam ID:PF01386
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L27
Chain IDs:U (auth: j)
Chain Length:85
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7L8 Pfam ID:PF01016
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L28
Gene (Uniprot):rpmB
Chain IDs:V (auth: k)
Chain Length:87
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7M2 Pfam ID:PF00830
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L29
Gene (Uniprot):rpmC
Chain IDs:W (auth: l)
Chain Length:70
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7M6 Pfam ID:PF00831
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L30
Gene (Uniprot):rpmD
Chain IDs:X (auth: m)
Chain Length:75
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0AG51 Pfam ID:PF00327
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L32
Gene (Uniprot):rpmF
Chain IDs:Y (auth: n)
Chain Length:57
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7N4 Pfam ID:PF01783
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L33
Gene (Uniprot):rpmG
Chain IDs:Z (auth: o)
Chain Length:120
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7N9 Pfam ID:PF00471
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L34
Gene (Uniprot):rpmH
Chain IDs:AA (auth: p)
Chain Length:46
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7P5 Pfam ID:PF00468
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L35
Gene (Uniprot):rpmI
Chain IDs:BA (auth: q)
Chain Length:209
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7Q1 Pfam ID:PF01632
Protein Blast
Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L36
Chain IDs:CA (auth: r)
Chain Length:55
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A7Q6 Pfam ID:PF00444
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S21
Gene (Uniprot):rpsU
Chain IDs:DB (auth: s)
Chain Length:179
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P68679 Pfam ID:PF01165
Protein Blast
Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S1
Chain IDs:EB (auth: t)
Chain Length:557
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0AG67 Pfam ID:PF00575
Polymer Type:polyribonucleotide
Molecule:A-site tRNA
Chain IDs:FB (auth: u)
Chain Length:149
Number of Molecules:1
Biological Source:Escherichia coli
Protein Blast
Polymer Type:polypeptide(L)
Molecule:UPF0115 protein YfcN
Chain IDs:GB (auth: v)
Chain Length:182
Number of Molecules:1
Biological Source:Escherichia coli
UniProt ID:P0A8B2 Pfam ID:PF01713
Polymer Type:polyribonucleotide
Molecule:mRNA
Chain IDs:IA (auth: x)
Chain Length:692
Number of Molecules:1
Biological Source:Vibrio alginolyticus
Ligand Molecules
K
MG
Primary Citation
Ribosome collisions induce mRNA cleavage and ribosome rescue in bacteria.
Nature 603 503 508 (2022)
PMID: 35264790 DOI: 10.1038/s41586-022-04416-7

Abstact

Ribosome rescue pathways recycle stalled ribosomes and target problematic mRNAs and aborted proteins for degradation1,2. In bacteria, it remains unclear how rescue pathways distinguish ribosomes stalled in the middle of a transcript from actively translating ribosomes3-6. Here, using a genetic screen in Escherichia coli, we discovered a new rescue factor that has endonuclease activity. SmrB cleaves mRNAs upstream of stalled ribosomes, allowing the ribosome rescue factor tmRNA (which acts on truncated mRNAs3) to rescue upstream ribosomes. SmrB is recruited to ribosomes and is activated by collisions. Cryo-electron microscopy structures of collided disomes from E. coli and Bacillus subtilis show distinct and conserved arrangements of individual ribosomes and the composite SmrB-binding site. These findings reveal the underlying mechanisms by which ribosome collisions trigger ribosome rescue in bacteria.

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Protein

Chemical

Disease

Primary Citation of related structures
7QGR