7QWQ image
Deposition Date 2022-01-25
Release Date 2022-03-16
Last Version Date 2024-07-17
Entry Detail
PDB ID:
7QWQ
Keywords:
RIBOSOME
Title:
Ternary complex of ribosome nascent chain with SRP and NAC
Biological Source:
Source Organism(s):
Homo sapiens (Taxon ID: 9606)
Oryctolagus cuniculus (Taxon ID: 9986)
Expression System(s):
Escherichia coli, Oryctolagus cuniculus
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.83 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7QWQ validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:SRP RNA 7SL
Chain IDs:A (auth: 1)
Chain Length:167
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polyribonucleotide
Molecule:28S rRNA
Chain IDs:I (auth: 5)
Chain Length:4754
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5S ribosomal RNA
Chain IDs:UA (auth: 7)
Chain Length:120
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5.8S ribosomal RNA
Chain IDs:WA (auth: 8)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:L8
Gene (Uniprot):RPL8
Chain IDs:G (auth: A)
Chain Length:148
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TT27 Pfam ID:PF00181, PF03947
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL3
Gene (Uniprot):RPL3
Chain IDs:J (auth: B)
Chain Length:223
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:G1TL06 Pfam ID:PF00297
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L4
Gene (Uniprot):RPL4
Chain IDs:L (auth: C)
Chain Length:413
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SVW5 Pfam ID:PF00573, PF14374
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L18_c domain-containing protein
Chain IDs:N (auth: D)
Chain Length:125
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:P19949 Pfam ID:PF17144, PF14204
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6
Gene (Uniprot):RPL6
Chain IDs:P (auth: E)
Chain Length:291
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SKF7 Pfam ID:PF03868, PF01159
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL30
Gene (Uniprot):RPL7
Chain IDs:R (auth: F)
Chain Length:225
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SV32 Pfam ID:PF08079, PF00327
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L7a
Gene (Uniprot):RPL7A
Chain IDs:T (auth: G)
Chain Length:319
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1STW0 Pfam ID:PF01248
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L9
Gene (Uniprot):RPL9
Chain IDs:V (auth: H)
Chain Length:123
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SWI6 Pfam ID:PF00347
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L10
Gene (Uniprot):RPL10
Chain IDs:X (auth: I)
Chain Length:214
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:B7NZQ2 Pfam ID:PF00252
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L11
Gene (Uniprot):RPL11
Chain IDs:Z (auth: J)
Chain Length:97
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TUB8 Pfam ID:PF00281, PF00673
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13
Chain IDs:BA (auth: L)
Chain Length:210
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L14
Chain IDs:DA (auth: M)
Chain Length:128
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SZ12 Pfam ID:PF01929
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L15
Gene (Uniprot):RPL15
Chain IDs:FA (auth: N)
Chain Length:204
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T0C1 Pfam ID:PF00827
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13a
Gene (Uniprot):FLT3LG
Chain IDs:HA (auth: O)
Chain Length:500
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:A0A287B929 Pfam ID:PF02947
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L17
Chain IDs:JA (auth: P)
Chain Length:153
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:eL18
Chain IDs:LA (auth: Q)
Chain Length:144
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L19
Gene (Uniprot):RPL19
Chain IDs:NA (auth: R)
Chain Length:137
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:Q3T0W9 Pfam ID:PF01280, PF25476
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L18a
Chain IDs:OA (auth: S)
Chain Length:175
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L21
Gene (Uniprot):RPL21
Chain IDs:PA (auth: T)
Chain Length:160
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SHQ2 Pfam ID:PF01157
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L22
Chain IDs:QA (auth: U)
Chain Length:162
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L23
Gene (Uniprot):RPL23
Chain IDs:RA (auth: V)
Chain Length:140
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T6D1 Pfam ID:PF00238
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L24
Gene (Uniprot):RPL24
Chain IDs:SA (auth: W)
Chain Length:157
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SE28 Pfam ID:PF01246
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L23eN domain-containing protein
Gene (Uniprot):RPL23A
Chain IDs:TA (auth: X)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SE76 Pfam ID:PF03939, PF00276
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L26
Gene (Uniprot):RPL26
Chain IDs:VA (auth: Y)
Chain Length:145
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SQH0 Pfam ID:PF16906, PF00467
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27
Gene (Uniprot):RPL27
Chain IDs:XA (auth: Z)
Chain Length:136
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TXF6 Pfam ID:PF00467, PF01777
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27a
Gene (Uniprot):RPL27A
Chain IDs:YA (auth: a)
Chain Length:148
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SNY0 Pfam ID:PF00828
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Chain IDs:H (auth: b)
Chain Length:223
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SGR6 Pfam ID:PF01779
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L30
Gene (Uniprot):RPL30
Chain IDs:K (auth: c)
Chain Length:413
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TDL2 Pfam ID:PF01248
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L31
Gene (Uniprot):RPL31
Chain IDs:M (auth: d)
Chain Length:125
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SHG0 Pfam ID:PF01198
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L32
Gene (Uniprot):RPL32
Chain IDs:O (auth: e)
Chain Length:291
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TUN8 Pfam ID:PF01655
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35a
Gene (Uniprot):RPL35A
Chain IDs:Q (auth: f)
Chain Length:225
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SF08 Pfam ID:PF01247
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L34
Chain IDs:S (auth: g)
Chain Length:319
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TXG5 Pfam ID:PF01199
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35
Gene (Uniprot):RPL35
Chain IDs:U (auth: h)
Chain Length:123
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SIT5 Pfam ID:PF00831
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36
Gene (Uniprot):RPL36
Chain IDs:W (auth: i)
Chain Length:214
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TTQ5 Pfam ID:PF01158
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37
Gene (Uniprot):RPL37
Chain IDs:Y (auth: j)
Chain Length:97
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:U3KPD5 Pfam ID:PF01907
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L38
Gene (Uniprot):RPL38
Chain IDs:AA (auth: k)
Chain Length:69
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:B5FYZ2 Pfam ID:PF01781
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L39
Gene (Uniprot):RPL39
Chain IDs:CA (auth: l)
Chain Length:210
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SYU7 Pfam ID:PF00832
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ubiquitin A-52 residue ribosomal protein fusion product 1
Gene (Uniprot):UBA52
Chain IDs:EA (auth: m)
Chain Length:128
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:A0A2U3YV30 Pfam ID:PF00240, PF01020
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60s ribosomal protein l41
Gene (Uniprot):RPL41
Chain IDs:GA (auth: n)
Chain Length:204
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:A0A087WNH4 Pfam ID:PF05162
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL42
Chain IDs:IA (auth: o)
Chain Length:500
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:A0A5F9D391 Pfam ID:PF00935
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL43
Gene (Uniprot):RPL37A
Chain IDs:KA (auth: p)
Chain Length:153
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SY53 Pfam ID:PF01780
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Signal recognition particle 19 kDa protein
Gene (Uniprot):SRP19
Chain IDs:B (auth: q)
Chain Length:144
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P09132 Pfam ID:PF01922
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L28
Gene (Uniprot):RPL28
Chain IDs:MA (auth: r)
Chain Length:137
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1U7L1 Pfam ID:PF01778
Polymer Type:polypeptide(L)
Molecule:Nascent chain preprolactin
Chain IDs:C (auth: s)
Chain Length:175
Number of Molecules:1
Biological Source:Homo sapiens
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Nascent polypeptide-associated complex subunit alpha
Gene (Uniprot):NACA
Chain IDs:ZA (auth: t)
Chain Length:160
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:Q13765 Pfam ID:PF01849, PF19026
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Isoform 2 of Transcription factor BTF3
Gene (Uniprot):BTF3
Chain IDs:D (auth: u)
Chain Length:162
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P20290 Pfam ID:PF01849
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Signal recognition particle subunit SRP68
Gene (Uniprot):SRP68
Chain IDs:E (auth: v)
Chain Length:140
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:Q9UHB9 Pfam ID:PF16969
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Signal recognition particle 54 kDa protein
Gene (Uniprot):SRP54
Chain IDs:F (auth: x)
Chain Length:156
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P61011 Pfam ID:PF02881, PF00448, PF02978
Ligand Molecules
MG
ZN
Primary Citation
Mechanism of signal sequence handover from NAC to SRP on ribosomes during ER-protein targeting.
Science 375 839 844 (2022)
PMID: 35201867 DOI: 10.1126/science.abl6459

Abstact

The nascent polypeptide-associated complex (NAC) interacts with newly synthesized proteins at the ribosomal tunnel exit and competes with the signal recognition particle (SRP) to prevent mistargeting of cytosolic and mitochondrial polypeptides to the endoplasmic reticulum (ER). How NAC antagonizes SRP and how this is overcome by ER targeting signals are unknown. Here, we found that NAC uses two domains with opposing effects to control SRP access. The core globular domain prevented SRP from binding to signal-less ribosomes, whereas a flexibly attached domain transiently captured SRP to permit scanning of nascent chains. The emergence of an ER-targeting signal destabilized NAC's globular domain and facilitated SRP access to the nascent chain. These findings elucidate how NAC hands over the signal sequence to SRP and imparts specificity of protein localization.

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Protein

Chemical

Disease

Primary Citation of related structures
7QWQ
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