7QWR image
Deposition Date 2022-01-25
Release Date 2022-03-09
Last Version Date 2024-07-17
Entry Detail
PDB ID:
7QWR
Keywords:
RIBOSOME
Title:
Structure of the ribosome-nascent chain containing an ER signal sequence in complex with NAC
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Oryctolagus cuniculus (Taxon ID: 9986)
Host Organism:
Oryctolagus cuniculus
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
2.90 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7QWR validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:28S rRNA
Chain IDs:PA (auth: 5)
Chain Length:4754
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5S ribosomal RNA
Chain IDs:RA (auth: 7)
Chain Length:120
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polyribonucleotide
Molecule:5.8S ribosomal RNA
Chain IDs:TA (auth: 8)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L8
Gene (Uniprot):ZNF34
Chain IDs:D (auth: A)
Chain Length:148
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:A0A5F9D5B2 Pfam ID:PF03947
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L3
Gene (Uniprot):RPL3
Chain IDs:F (auth: B)
Chain Length:223
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TL06 Pfam ID:PF00297
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L4
Gene (Uniprot):RPL4
Chain IDs:H (auth: C)
Chain Length:115
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SVW5 Pfam ID:PF00573, PF14374
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L18_c domain-containing protein
Chain IDs:J (auth: D)
Chain Length:125
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:P19949
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L6
Gene (Uniprot):RPL6
Chain IDs:L (auth: E)
Chain Length:157
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SKF7 Pfam ID:PF03868, PF01159
Protein Blast
Polymer Type:polypeptide(L)
Molecule:uL30
Gene (Uniprot):RPL7
Chain IDs:N (auth: F)
Chain Length:110
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SV32 Pfam ID:PF08079, PF00327
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L7a
Gene (Uniprot):RPL7A
Chain IDs:P (auth: G)
Chain Length:129
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1STW0 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L9
Gene (Uniprot):RPL9
Chain IDs:R (auth: H)
Chain Length:123
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SWI6 Pfam ID:PF00347
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L10
Gene (Uniprot):RPL10
Chain IDs:T (auth: I)
Chain Length:214
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:B7NZQ2 Pfam ID:PF00252
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L11
Gene (Uniprot):RPL11
Chain IDs:V (auth: J)
Chain Length:178
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TUB8 Pfam ID:PF00281, PF00673
Protein Blast
Polymer Type:polypeptide(L)
Molecule:L13
Gene (Uniprot):RPL13
Chain IDs:X (auth: L)
Chain Length:211
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TKB3 Pfam ID:PF01294
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L14
Chain IDs:Z (auth: M)
Chain Length:218
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SZ12 Pfam ID:PF01929
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L15
Gene (Uniprot):RPL15
Chain IDs:BA (auth: N)
Chain Length:204
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T0C1 Pfam ID:PF00827
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L13a
Chain IDs:DA (auth: O)
Chain Length:500
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L17
Chain IDs:FA (auth: P)
Chain Length:153
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL18
Chain IDs:HA (auth: Q)
Chain Length:187
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TX70 Pfam ID:PF17135
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L19
Gene (Uniprot):RPL19
Chain IDs:JA (auth: R)
Chain Length:137
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:Q3T0W9 Pfam ID:PF01280
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L18a
Chain IDs:KA (auth: S)
Chain Length:24
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L21
Gene (Uniprot):RPL21
Chain IDs:LA (auth: T)
Chain Length:215
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SHQ2 Pfam ID:PF01157
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L22
Chain IDs:MA (auth: U)
Chain Length:105
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L23
Gene (Uniprot):RPL23
Chain IDs:NA (auth: V)
Chain Length:140
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1T6D1 Pfam ID:PF00238
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L24
Gene (Uniprot):RPL24
Chain IDs:OA (auth: W)
Chain Length:157
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SE28 Pfam ID:PF01246
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal_L23eN domain-containing protein
Gene (Uniprot):RPL23A
Chain IDs:QA (auth: X)
Chain Length:156
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SE76 Pfam ID:PF03939, PF00276
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L26
Gene (Uniprot):RPL26
Chain IDs:SA (auth: Y)
Chain Length:145
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SQH0 Pfam ID:PF16906, PF00467
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27
Gene (Uniprot):RPL27
Chain IDs:UA (auth: Z)
Chain Length:136
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TXF6 Pfam ID:PF00467, PF01777
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L27a
Gene (Uniprot):RPL27A
Chain IDs:VA (auth: a)
Chain Length:148
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SNY0 Pfam ID:PF00828
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L29
Chain IDs:E (auth: b)
Chain Length:223
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SGR6 Pfam ID:PF01779
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L30
Gene (Uniprot):RPL30
Chain IDs:G (auth: c)
Chain Length:115
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TDL2 Pfam ID:PF01248
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L31
Gene (Uniprot):RPL31
Chain IDs:I (auth: d)
Chain Length:125
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SHG0 Pfam ID:PF01198
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L32
Gene (Uniprot):RPL32
Chain IDs:K (auth: e)
Chain Length:157
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TUN8 Pfam ID:PF01655
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35a
Gene (Uniprot):RPL35A
Chain IDs:M (auth: f)
Chain Length:110
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SF08 Pfam ID:PF01247
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L34
Chain IDs:O (auth: g)
Chain Length:129
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TXG5 Pfam ID:PF01199
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L35
Gene (Uniprot):RPL35
Chain IDs:Q (auth: h)
Chain Length:123
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SIT5 Pfam ID:PF00831
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L36
Gene (Uniprot):RPL36
Chain IDs:S (auth: i)
Chain Length:214
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1TTQ5 Pfam ID:PF01158
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L37
Gene (Uniprot):RPL37
Chain IDs:U (auth: j)
Chain Length:178
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:U3KPD5 Pfam ID:PF01907
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L38
Chain IDs:W (auth: k)
Chain Length:69
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Ribosomal protein L39
Gene (Uniprot):RPL39
Chain IDs:Y (auth: l)
Chain Length:211
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SYU7 Pfam ID:PF00832
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L40
Chain IDs:AA (auth: m)
Chain Length:218
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60s ribosomal protein l41
Gene (Uniprot):RPL41
Chain IDs:CA (auth: n)
Chain Length:204
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:A0A087WNH4 Pfam ID:PF05162
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL42
Chain IDs:EA (auth: o)
Chain Length:500
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:A0A5F9D391 Pfam ID:PF00935
Protein Blast
Polymer Type:polypeptide(L)
Molecule:eL43
Gene (Uniprot):RPL37A
Chain IDs:GA (auth: p)
Chain Length:153
Number of Molecules:1
Biological Source:Oryctolagus cuniculus
UniProt ID:G1SY53 Pfam ID:PF01780
Protein Blast
Polymer Type:polypeptide(L)
Molecule:60S ribosomal protein L28
Gene (Uniprot):RPL28
Chain IDs:IA (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 pre-prolactin
Chain IDs:A (auth: s)
Chain Length:24
Number of Molecules:1
Biological Source:Homo sapiens
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Nascent polypeptide-associated complex subunit alpha
Gene (Uniprot):NACA
Chain IDs:B (auth: t)
Chain Length:215
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:Q13765 Pfam ID:PF01849, PF19026
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Isoform 2 of Transcription factor BTF3
Gene (Uniprot):BTF3
Chain IDs:C (auth: u)
Chain Length:105
Number of Molecules:1
Biological Source:Homo sapiens
UniProt ID:P20290 Pfam ID:PF01849
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
7QWR