ISDA

Deposition Date 2020-08-16

Release Date 2020-11-11

Last Version Date 2024-11-06

Entry Detail

PDB ID:

7JT2

Keywords:

RIBOSOME

Title:

70S ribosome stalled on long mRNA with ArfB bound in the A site

Biological Source:

Source Organism:

Escherichia coli (strain K12) (Taxon ID: 83333)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

ELECTRON MICROSCOPY

Resolution:

3.50 Å

Aggregation State:

PARTICLE

Reconstruction Method:

SINGLE PARTICLE

Download Validation Report

Macromolecular Entities

Polymer Type:polyribonucleotide
Molecule:23S ribosomal RNA
Chain IDs:YA (auth: 1)
Chain Length:2903
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

Polymer Type:polyribonucleotide
Molecule:5S ribosomal RNA
Chain IDs:ZA (auth: 2)
Chain Length:120
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

Polymer Type:polyribonucleotide
Molecule:16S ribosomal RNA
Chain IDs:XA (auth: 3)
Chain Length:1539
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

Polymer Type:polyribonucleotide
Molecule:mRNA
Chain IDs:BB (auth: 4)
Chain Length:23
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

Polymer Type:polyribonucleotide
Molecule:tRNAfMet
Chain IDs:AB (auth: 5)
Chain Length:77
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Peptidyl-tRNA hydrolase ArfB
Gene (Uniprot):arfB
Chain IDs:CB (auth: 8)
Chain Length:132
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P40711 Pfam ID:PF00472

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L32
Gene (Uniprot):rpmF
Chain IDs:Y (auth: B)
Chain Length:56
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7N4 Pfam ID:PF01783

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L33
Gene (Uniprot):rpmG
Chain IDs:Z (auth: C)
Chain Length:209
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7N9 Pfam ID:PF00471

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L34
Gene (Uniprot):rpmH
Chain IDs:AA (auth: D)
Chain Length:46
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7P5 Pfam ID:PF00468

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L35
Gene (Uniprot):rpmI
Chain IDs:BA (auth: E)
Chain Length:64
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7Q1 Pfam ID:PF01632

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L36
Gene (Uniprot):rpmJ
Chain IDs:CA (auth: F)
Chain Length:176
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7Q6 Pfam ID:PF00444

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S2
Gene (Uniprot):rpsB
Chain IDs:DA (auth: G)
Chain Length:149
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7V0 Pfam ID:PF00318

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S3
Gene (Uniprot):rpsC
Chain IDs:EA (auth: H)
Chain Length:206
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7V3 Pfam ID:PF07650, PF00189

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S4
Gene (Uniprot):rpsD
Chain IDs:FA (auth: I)
Chain Length:205
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7V8 Pfam ID:PF00163, PF01479

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S5
Gene (Uniprot):rpsE
Chain IDs:GA (auth: J)
Chain Length:142
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7W1 Pfam ID:PF00333, PF03719

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S6
Gene (Uniprot):rpsF
Chain IDs:HA (auth: K)
Chain Length:100
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P02358 Pfam ID:PF01250

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S7
Gene (Uniprot):rpsG
Chain IDs:IA (auth: L)
Chain Length:151
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P02359 Pfam ID:PF00177

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S8
Gene (Uniprot):rpsH
Chain IDs:JA (auth: M)
Chain Length:136
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7W7 Pfam ID:PF00410

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S9
Gene (Uniprot):rpsI
Chain IDs:KA (auth: N)
Chain Length:120
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7X3 Pfam ID:PF00380

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S10
Gene (Uniprot):rpsJ
Chain IDs:LA (auth: O)
Chain Length:98
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7R5 Pfam ID:PF00338

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S11
Gene (Uniprot):rpsK
Chain IDs:MA (auth: P)
Chain Length:116
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7R9 Pfam ID:PF00411

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S12
Gene (Uniprot):rpsL
Chain IDs:NA (auth: Q)
Chain Length:123
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7S3 Pfam ID:PF00164

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S13
Gene (Uniprot):rpsM
Chain IDs:OA (auth: R)
Chain Length:103
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7S9 Pfam ID:PF00416

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S14
Gene (Uniprot):rpsN
Chain IDs:PA (auth: S)
Chain Length:100
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0AG59 Pfam ID:PF00253

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S15
Gene (Uniprot):rpsO
Chain IDs:QA (auth: T)
Chain Length:93
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0ADZ4 Pfam ID:PF00312

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S16
Gene (Uniprot):rpsP
Chain IDs:RA (auth: U)
Chain Length:82
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7T3 Pfam ID:PF00886

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S17
Gene (Uniprot):rpsQ
Chain IDs:SA (auth: V)
Chain Length:80
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0AG63 Pfam ID:PF00366

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S18
Gene (Uniprot):rpsR
Chain IDs:TA (auth: W)
Chain Length:65
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7T7 Pfam ID:PF01084

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S19
Gene (Uniprot):rpsS
Chain IDs:UA (auth: X)
Chain Length:77
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7U3 Pfam ID:PF00203

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S20
Gene (Uniprot):rpsT
Chain IDs:VA (auth: Y)
Chain Length:85
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7U7 Pfam ID:PF01649

Protein Blast

Polymer Type:polypeptide(L)
Molecule:30S ribosomal protein S21
Gene (Uniprot):rpsU
Chain IDs:WA (auth: Z)
Chain Length:65
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P68679 Pfam ID:PF01165

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L2
Gene (Uniprot):rplB
Chain IDs:A (auth: b)
Chain Length:56
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P60422 Pfam ID:PF00181, PF03947

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L3
Gene (Uniprot):rplC
Chain IDs:B (auth: c)
Chain Length:209
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P60438 Pfam ID:PF00297

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L4
Gene (Uniprot):rplD
Chain IDs:C (auth: d)
Chain Length:46
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P60723 Pfam ID:PF00573

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L5
Gene (Uniprot):rplE
Chain IDs:D (auth: e)
Chain Length:64
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P62399 Pfam ID:PF00281, PF00673

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L6
Gene (Uniprot):rplF
Chain IDs:E (auth: f)
Chain Length:176
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0AG55 Pfam ID:PF00347

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L9
Gene (Uniprot):rplI
Chain IDs:F (auth: g)
Chain Length:149
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7R1 Pfam ID:PF01281, PF03948

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L10
Gene (Uniprot):rplJ
Chain IDs:G (auth: h)
Chain Length:206
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7J3 Pfam ID:PF00466

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L13
Gene (Uniprot):rplM
Chain IDs:H (auth: j)
Chain Length:142
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0AA10 Pfam ID:PF00572

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L14
Gene (Uniprot):rplN
Chain IDs:I (auth: k)
Chain Length:100
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0ADY3 Pfam ID:PF00238

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L15
Gene (Uniprot):rplO
Chain IDs:J (auth: l)
Chain Length:151
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P02413 Pfam ID:PF00828

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L16
Gene (Uniprot):rplP
Chain IDs:K (auth: m)
Chain Length:136
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0ADY7 Pfam ID:PF00252

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L17
Gene (Uniprot):rplQ
Chain IDs:L (auth: n)
Chain Length:120
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0AG44 Pfam ID:PF01196

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L18
Gene (Uniprot):rplR
Chain IDs:M (auth: o)
Chain Length:98
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0C018 Pfam ID:PF00861

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L19
Gene (Uniprot):rplS
Chain IDs:N (auth: p)
Chain Length:116
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7K6 Pfam ID:PF01245

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L20
Gene (Uniprot):rplT
Chain IDs:O (auth: q)
Chain Length:123
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7L3 Pfam ID:PF00453

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L21
Gene (Uniprot):rplU
Chain IDs:P (auth: r)
Chain Length:103
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0AG48 Pfam ID:PF00829

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L22
Gene (Uniprot):rplV
Chain IDs:Q (auth: s)
Chain Length:100
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P61175 Pfam ID:PF00237

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L23
Gene (Uniprot):rplW
Chain IDs:R (auth: t)
Chain Length:93
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0ADZ0 Pfam ID:PF00276

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L24
Gene (Uniprot):rplX
Chain IDs:S (auth: u)
Chain Length:82
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

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: v)
Chain Length:80
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P68919 Pfam ID:PF01386

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L27
Gene (Uniprot):rpmA
Chain IDs:U (auth: w)
Chain Length:65
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7L8 Pfam ID:PF01016

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L28
Gene (Uniprot):rpmB
Chain IDs:V (auth: x)
Chain Length:77
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7M2 Pfam ID:PF00830

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L29
Gene (Uniprot):rpmC
Chain IDs:W (auth: y)
Chain Length:85
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0A7M6 Pfam ID:PF00831

Protein Blast

Polymer Type:polypeptide(L)
Molecule:50S ribosomal protein L30
Gene (Uniprot):rpmD
Chain IDs:X (auth: z)
Chain Length:65
Number of Molecules:1
Biological Source:Escherichia coli (strain K12)

UniProt ID:P0AG51 Pfam ID:PF00327

Ligand Molecules

Primary Citation

ArfB can displace mRNA to rescue stalled ribosomes

Carbone, C.E, Demo, G, Madireddy, R, Svidritskiy, E, Korostelev, A.A.Show

Nat Commun 11 5552 5552 (2020)

PMID: 33144582 DOI: 10.1038/s41467-020-19370-z

Abstact

Ribosomes stalled during translation must be rescued to replenish the pool of translation-competent ribosomal subunits. Bacterial alternative rescue factor B (ArfB) releases nascent peptides from ribosomes stalled on mRNAs truncated at the A site, allowing ribosome recycling. Prior structural work revealed that ArfB recognizes such ribosomes by inserting its C-terminal α-helix into the vacant mRNA tunnel. In this work, we report that ArfB can efficiently recognize a wider range of mRNA substrates, including longer mRNAs that extend beyond the A-site codon. Single-particle cryo-EM unveils that ArfB employs two modes of function depending on the mRNA length. ArfB acts as a monomer to accommodate a shorter mRNA in the ribosomal A site. By contrast, longer mRNAs are displaced from the mRNA tunnel by more than 20 Å and are stabilized in the intersubunit space by dimeric ArfB. Uncovering distinct modes of ArfB function resolves conflicting biochemical and structural studies, and may lead to re-examination of other ribosome rescue pathways, whose functions depend on mRNA lengths.

Legend

Protein

Chemical

Disease

Primary Citation of related structures