ISDA: 7ACJ

Deposition Date 2020-09-11

Release Date 2021-08-18

Last Version Date 2025-03-12

Entry Detail

PDB ID:

7ACJ

Keywords:

TRANSLATION

Title:

Structure of translocated trans-translation complex on E. coli stalled ribosome.

Biological Source:

Source Organism(s):

Escherichia coli BL21(DE3) (Taxon ID: 469008)
Escherichia coli K-12 (Taxon ID: 83333)

Expression System(s):

Escherichia coli

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.20 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

Download Validation Report

Macromolecular Entities

Polymer Type:polyribonucleotide
Molecule:23S ribosomal RNA
Chain IDs:A (auth: 1)
Chain Length:2903
Number of Molecules:1
Biological Source:Escherichia coli K-12

Polymer Type:polyribonucleotide
Molecule:16S ribosomal RNA
Chain IDs:B (auth: 2)
Chain Length:1534
Number of Molecules:1
Biological Source:Escherichia coli K-12

Polymer Type:polyribonucleotide
Molecule:5S ribosomal RNA
Chain IDs:C (auth: 3)
Chain Length:120
Number of Molecules:1
Biological Source:Escherichia coli K-12

Polymer Type:polyribonucleotide
Molecule:transfer-messanger RNA (tmRNA)
Chain IDs:D (auth: 4)
Chain Length:363
Number of Molecules:1
Biological Source:Escherichia coli BL21(DE3)

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:SsrA-binding protein
Gene (Uniprot):smpB
Chain IDs:E (auth: 5)
Chain Length:150
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A832 Pfam ID:PF01668

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L27
Gene (Uniprot):rpmA
Chain IDs:F (auth: A)
Chain Length:79
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7L8 Pfam ID:PF01016

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L2
Gene (Uniprot):rplB
Chain IDs:G (auth: B)
Chain Length:56
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P60422 Pfam ID:PF00181, PF03947

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L3
Gene (Uniprot):rplC
Chain IDs:H (auth: C)
Chain Length:209
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P60438 Pfam ID:PF00297

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L4
Gene (Uniprot):rplD
Chain IDs:I (auth: D)
Chain Length:46
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P60723 Pfam ID:PF00573

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L5
Gene (Uniprot):rplE
Chain IDs:J (auth: E)
Chain Length:64
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P62399 Pfam ID:PF00673, PF00281

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L6
Gene (Uniprot):rplF
Chain IDs:K (auth: F)
Chain Length:38
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0AG55 Pfam ID:PF00347

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L9
Gene (Uniprot):rplI
Chain IDs:L (auth: G)
Chain Length:225
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7R1 Pfam ID:PF01281, PF03948

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L13
Gene (Uniprot):rplM
Chain IDs:M (auth: J)
Chain Length:156
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0AA10 Pfam ID:PF00572

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L14
Gene (Uniprot):rplN
Chain IDs:N (auth: K)
Chain Length:123
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0ADY3 Pfam ID:PF00238

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L15
Gene (Uniprot):rplO
Chain IDs:O (auth: L)
Chain Length:151
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P02413 Pfam ID:PF00828

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L16
Gene (Uniprot):rplP
Chain IDs:P (auth: M)
Chain Length:136
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0ADY7 Pfam ID:PF00252

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L17
Gene (Uniprot):rplQ
Chain IDs:Q (auth: N)
Chain Length:127
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0AG44 Pfam ID:PF01196

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L18
Gene (Uniprot):rplR
Chain IDs:R (auth: O)
Chain Length:99
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0C018 Pfam ID:PF00861

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L19
Gene (Uniprot):rplS
Chain IDs:S (auth: P)
Chain Length:114
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7K6 Pfam ID:PF01245

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L20
Gene (Uniprot):rplT
Chain IDs:T (auth: Q)
Chain Length:122
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7L3 Pfam ID:PF00453

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L21
Gene (Uniprot):rplU
Chain IDs:U (auth: R)
Chain Length:112
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0AG48 Pfam ID:PF00829

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L22
Gene (Uniprot):rplV
Chain IDs:V (auth: S)
Chain Length:110
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P61175 Pfam ID:PF00237

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L23
Gene (Uniprot):rplW
Chain IDs:W (auth: T)
Chain Length:88
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0ADZ0 Pfam ID:PF00276

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L24
Gene (Uniprot):rplX
Chain IDs:X (auth: U)
Chain Length:82
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P60624 Pfam ID:PF00467, PF17136

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L25
Gene (Uniprot):rplY
Chain IDs:Y (auth: V)
Chain Length:94
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P68919 Pfam ID:PF01386

Polymer Type:polypeptide(L)
Molecule:Nascent peptide
Chain IDs:Z (auth: W)
Chain Length:2
Number of Molecules:1
Biological Source:Escherichia coli K-12

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L28
Gene (Uniprot):rpmB
Chain IDs:AA (auth: X)
Chain Length:77
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7M2 Pfam ID:PF00830

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L29
Gene (Uniprot):rpmC
Chain IDs:BA (auth: Y)
Chain Length:62
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7M6 Pfam ID:PF00831

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L30
Gene (Uniprot):rpmD
Chain IDs:CA (auth: Z)
Chain Length:58
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0AG51 Pfam ID:PF00327

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L31
Gene (Uniprot):rpmE
Chain IDs:DA (auth: a)
Chain Length:79
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7M9 Pfam ID:PF01197

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L32
Gene (Uniprot):rpmF
Chain IDs:EA (auth: b)
Chain Length:56
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7N4 Pfam ID:PF01783

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L33
Gene (Uniprot):rpmG
Chain IDs:FA (auth: c)
Chain Length:209
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7N9 Pfam ID:PF00471

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L34
Gene (Uniprot):rpmH
Chain IDs:GA (auth: d)
Chain Length:46
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7P5 Pfam ID:PF00468

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L35
Gene (Uniprot):rpmI
Chain IDs:HA (auth: e)
Chain Length:64
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7Q1 Pfam ID:PF01632

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L36
Gene (Uniprot):rpmJ
Chain IDs:IA (auth: f)
Chain Length:38
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7Q6 Pfam ID:PF00444

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S2
Gene (Uniprot):rpsB
Chain IDs:JA (auth: g)
Chain Length:225
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7V0 Pfam ID:PF00318

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S3
Gene (Uniprot):rpsC
Chain IDs:KA (auth: h)
Chain Length:212
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7V3 Pfam ID:PF07650, PF00189

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S4
Gene (Uniprot):rpsD
Chain IDs:LA (auth: i)
Chain Length:205
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7V8 Pfam ID:PF01479, PF00163

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S5
Gene (Uniprot):rpsE
Chain IDs:MA (auth: j)
Chain Length:156
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7W1 Pfam ID:PF03719, PF00333

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S6
Gene (Uniprot):rpsF
Chain IDs:NA (auth: k)
Chain Length:123
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P02358 Pfam ID:PF01250

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S7
Gene (Uniprot):rpsG
Chain IDs:OA (auth: l)
Chain Length:151
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P02359 Pfam ID:PF00177

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S8
Gene (Uniprot):rpsH
Chain IDs:PA (auth: m)
Chain Length:136
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7W7 Pfam ID:PF00410

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S9
Gene (Uniprot):rpsI
Chain IDs:QA (auth: n)
Chain Length:127
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7X3 Pfam ID:PF00380

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S10
Gene (Uniprot):rpsJ
Chain IDs:RA (auth: o)
Chain Length:99
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7R5 Pfam ID:PF00338

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S11
Gene (Uniprot):rpsK
Chain IDs:SA (auth: p)
Chain Length:114
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7R9 Pfam ID:PF00411

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S12
Gene (Uniprot):rpsL
Chain IDs:TA (auth: q)
Chain Length:122
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7S3 Pfam ID:PF00164

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S13
Gene (Uniprot):rpsM
Chain IDs:UA (auth: r)
Chain Length:112
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7S9 Pfam ID:PF00416

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S14
Gene (Uniprot):rpsN
Chain IDs:VA (auth: s)
Chain Length:110
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0AG59 Pfam ID:PF00253

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S15
Gene (Uniprot):rpsO
Chain IDs:WA (auth: t)
Chain Length:88
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0ADZ4 Pfam ID:PF00312

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S16
Gene (Uniprot):rpsP
Chain IDs:XA (auth: u)
Chain Length:82
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7T3 Pfam ID:PF00886

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S17
Gene (Uniprot):rpsQ
Chain IDs:YA (auth: v)
Chain Length:94
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0AG63 Pfam ID:PF00366

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S18
Gene (Uniprot):rpsR
Chain IDs:ZA (auth: w)
Chain Length:2
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7T7 Pfam ID:PF01084

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S19
Gene (Uniprot):rpsS
Chain IDs:AB (auth: x)
Chain Length:77
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7U3 Pfam ID:PF00203

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S20
Gene (Uniprot):rpsT
Chain IDs:BB (auth: y)
Chain Length:62
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P0A7U7 Pfam ID:PF01649

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S21
Gene (Uniprot):rpsU
Chain IDs:CB (auth: z)
Chain Length:58
Number of Molecules:1
Biological Source:Escherichia coli K-12

UniProt ID:P68679 Pfam ID:PF01165

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details
0TD	TA	ASP	modified residue
2MG	B	G	modified residue
4D4	P	ARG	modified residue
4OC	B	C	modified residue
5MC	B	C	modified residue
G7M	B	G	modified residue
MA6	B	A	modified residue
PSU	B	U	modified residue
UR3	B	U	modified residue

Ligand Molecules

Primary Citation

Structures of tmRNA and SmpB as they transit through the ribosome.

Guyomar, C, D'Urso, G, Chat, S, Giudice, E, Gillet, R.Show

Nat Commun 12 4909 4909 (2021)

PMID: 34389707 DOI: 10.1038/s41467-021-24881-4

Abstact

In bacteria, trans-translation is the main rescue system, freeing ribosomes stalled on defective messenger RNAs. This mechanism is driven by small protein B (SmpB) and transfer-messenger RNA (tmRNA), a hybrid RNA known to have both a tRNA-like and an mRNA-like domain. Here we present four cryo-EM structures of the ribosome during trans-translation at resolutions from 3.0 to 3.4 Å. These include the high-resolution structure of the whole pre-accommodated state, as well as structures of the accommodated state, the translocated state, and a translocation intermediate. Together, they shed light on the movements of the tmRNA-SmpB complex in the ribosome, from its delivery by the elongation factor EF-Tu to its passage through the ribosomal A and P sites after the opening of the B1 bridges. Additionally, we describe the interactions between the tmRNA-SmpB complex and the ribosome. These explain why the process does not interfere with canonical translation.

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Protein

Chemical

Disease

Primary Citation of related structures

Abstact

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