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- EMDB-12305: Mammalian ribosome nascent chain complex with SRP and SRP recepto... -

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Basic information

Entry
Database: EMDB / ID: EMD-12305
TitleMammalian ribosome nascent chain complex with SRP and SRP receptor in the early state B
Map dataMammalian ribosome nascent chain complex with SRP and SRP receptor in early state B
Sample
  • Complex: ribosome nascent chain complex with SRP and SRP receptor
Function / homology
Function and homology information


signal recognition particle receptor complex / SRP-dependent cotranslational protein targeting to membrane, signal sequence recognition / endoplasmic reticulum signal peptide binding / Major pathway of rRNA processing in the nucleolus and cytosol / GTP hydrolysis and joining of the 60S ribosomal subunit / signal recognition particle, endoplasmic reticulum targeting / Translesion synthesis by REV1 / Recognition of DNA damage by PCNA-containing replication complex / Translesion Synthesis by POLH / Downregulation of ERBB4 signaling ...signal recognition particle receptor complex / SRP-dependent cotranslational protein targeting to membrane, signal sequence recognition / endoplasmic reticulum signal peptide binding / Major pathway of rRNA processing in the nucleolus and cytosol / GTP hydrolysis and joining of the 60S ribosomal subunit / signal recognition particle, endoplasmic reticulum targeting / Translesion synthesis by REV1 / Recognition of DNA damage by PCNA-containing replication complex / Translesion Synthesis by POLH / Downregulation of ERBB4 signaling / Spry regulation of FGF signaling / Downregulation of ERBB2:ERBB3 signaling / NOD1/2 Signaling Pathway / APC/C:Cdc20 mediated degradation of Cyclin B / SCF-beta-TrCP mediated degradation of Emi1 / APC-Cdc20 mediated degradation of Nek2A / EGFR downregulation / TCF dependent signaling in response to WNT / NRIF signals cell death from the nucleus / p75NTR recruits signalling complexes / NF-kB is activated and signals survival / Activated NOTCH1 Transmits Signal to the Nucleus / Downregulation of TGF-beta receptor signaling / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / Downregulation of SMAD2/3:SMAD4 transcriptional activity / SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription / Senescence-Associated Secretory Phenotype (SASP) / Regulation of innate immune responses to cytosolic DNA / activated TAK1 mediates p38 MAPK activation / JNK (c-Jun kinases) phosphorylation and activation mediated by activated human TAK1 / Regulation of FZD by ubiquitination / PINK1-PRKN Mediated Mitophagy / N-glycan trimming in the ER and Calnexin/Calreticulin cycle / Regulation of TNFR1 signaling / TNFR1-induced NF-kappa-B signaling pathway / Translesion synthesis by POLK / Translesion synthesis by POLI / Regulation of necroptotic cell death / MAP3K8 (TPL2)-dependent MAPK1/3 activation / HDR through Homologous Recombination (HRR) / Josephin domain DUBs / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / DNA Damage Recognition in GG-NER / Formation of Incision Complex in GG-NER / Gap-filling DNA repair synthesis and ligation in GG-NER / Dual Incision in GG-NER / Fanconi Anemia Pathway / Regulation of TP53 Activity through Phosphorylation / Regulation of TP53 Degradation / Regulation of TP53 Activity through Methylation / Negative regulation of MET activity / Cyclin D associated events in G1 / PTK6 Regulates RTKs and Their Effectors AKT1 and DOK1 / Downregulation of ERBB2 signaling / E3 ubiquitin ligases ubiquitinate target proteins / Regulation of PTEN localization / ER Quality Control Compartment (ERQC) / Regulation of expression of SLITs and ROBOs / Interferon alpha/beta signaling / Endosomal Sorting Complex Required For Transport (ESCRT) / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / IKK complex recruitment mediated by RIP1 / IRAK2 mediated activation of TAK1 complex / TRAF6-mediated induction of TAK1 complex within TLR4 complex / Alpha-protein kinase 1 signaling pathway / RAS processing / Pexophagy / Inactivation of CSF3 (G-CSF) signaling / Negative regulation of FLT3 / Regulation of BACH1 activity / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / Regulation of NF-kappa B signaling / Termination of translesion DNA synthesis / Ovarian tumor domain proteases / Negative regulators of DDX58/IFIH1 signaling / Negative regulation of FGFR1 signaling / Negative regulation of FGFR2 signaling / Negative regulation of FGFR3 signaling / Negative regulation of FGFR4 signaling / Negative regulation of MAPK pathway / Synthesis of active ubiquitin: roles of E1 and E2 enzymes / Iron uptake and transport / Deactivation of the beta-catenin transactivating complex / Metalloprotease DUBs / Formation of TC-NER Pre-Incision Complex / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / Activation of NF-kappaB in B cells / L13a-mediated translational silencing of Ceruloplasmin expression / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / SRP-dependent cotranslational protein targeting to membrane / SCF(Skp2)-mediated degradation of p27/p21 / FCERI mediated NF-kB activation / Autodegradation of the E3 ubiquitin ligase COP1 / Asymmetric localization of PCP proteins / Degradation of AXIN / Degradation of DVL
Similarity search - Function
Signal recognition particle receptor, alpha subunit, N-terminal / Signal recognition particle, alpha subunit, N-terminal / Signal recognition particle, SRP72 subunit, RNA-binding / Signal recognition particle receptor, beta subunit / Signal recognition particle, SRP72 subunit / Putative TPR-like repeat / SRP72 RNA-binding domain / Signal recognition particle receptor beta subunit / Putative TPR-like repeat / Signal recognition particle, SRP9 subunit ...Signal recognition particle receptor, alpha subunit, N-terminal / Signal recognition particle, alpha subunit, N-terminal / Signal recognition particle, SRP72 subunit, RNA-binding / Signal recognition particle receptor, beta subunit / Signal recognition particle, SRP72 subunit / Putative TPR-like repeat / SRP72 RNA-binding domain / Signal recognition particle receptor beta subunit / Putative TPR-like repeat / Signal recognition particle, SRP9 subunit / SRP9 domain / Signal recognition particle SRP9 / Signal recognition particle 9 kDa protein (SRP9) / Signal recognition particle, SRP14 subunit / Signal recognition particle, SRP9/SRP14 subunit / Signal recognition particle 14kD protein / Signal recognition particle subunit SRP68 / Signal recognition particle subunit SRP68, RNA-binding domain / SRP68, N-terminal domain superfamily / RNA-binding signal recognition particle 68 / Signal recognition particle, SRP54 subunit, eukaryotic / Signal recognition particle, SRP19 subunit / Signal recognition particle, subunit SRP19-like superfamily / SRP19 protein / SRP/SRP receptor, N-terminal / Signal recognition particle, SRP54 subunit / Signal recognition particle, SRP54 subunit, M-domain / Signal recognition particle, SRP54 subunit, M-domain superfamily / Signal peptide binding domain / SRP54-type proteins GTP-binding domain signature. / Signal recognition particle SRP54, helical bundle / Signal recognition particle SRP54, N-terminal domain superfamily / SRP54-type protein, helical bundle domain / SRP54-type protein, helical bundle domain / Signal recognition particle, SRP54 subunit, GTPase domain / SRP54-type protein, GTPase domain / SRP54-type protein, GTPase domain / Longin-like domain superfamily / Tetratricopeptide repeat / Ribosomal protein L44e / Ribosomal protein L44 / Ribosomal protein L19, eukaryotic / Ribosomal L40e family / Ribosomal protein L44e signature. / Ribosomal_L40e / Ribosomal protein L40e / Ribosomal protein L40e superfamily / Ribosomal protein L27e signature. / Ribosomal protein L10e signature. / Ribosomal protein L19/L19e conserved site / Ribosomal protein L19e signature. / Ribosomal protein L24e signature. / Ribosomal protein L5 eukaryotic, C-terminal / Ribosomal L18 C-terminal region / Ribosomal protein L34e signature. / Ribosomal protein L6e signature. / Ribosomal protein 60S L18 and 50S L18e / 60S ribosomal protein L19 / Ribosomal protein L39e signature. / Ribosomal protein L35Ae signature. / Ribosomal protein L18/L18-A/B/e, conserved site / Ribosomal protein L18e signature. / Ribosomal_L19e / Ribosomal protein L19/L19e / Ribosomal protein L19/L19e, domain 1 / Ribosomal protein L19/L19e superfamily / Ribosomal protein L19e / Ribosomal protein L18e / TPR repeat region circular profile. / Ribosomal protein L31e signature. / Ribosomal protein L5 eukaryotic/L18 archaeal / Ribosomal large subunit proteins 60S L5, and 50S L18 / Ribosomal protein L32e signature. / Ribosomal protein L6 signature 2. / TPR repeat profile. / Ribosomal protein L1e signature. / Ribosomal protein L15e signature. / Ribosomal protein L21e signature. / Ribosomal protein L37e signature. / Tetratricopeptide repeats / Tetratricopeptide repeat / Ubiquitin conserved site / Ubiquitin domain / Ubiquitin domain signature. / Ribosomal protein L23 signature. / Ribosomal protein L30 signature. / Ubiquitin family / Ribosomal protein L5 signature. / Ribosomal protein L29 signature. / Ubiquitin homologues / Ribosomal protein L15 signature. / Ubiquitin-like domain / Ribosomal protein L14 signature. / Ribosomal protein L22 signature. / Ubiquitin domain profile. / Tetratricopeptide-like helical domain superfamily / Ribosomal protein L24 signature. / Ribosomal protein L18e/L15P / Ribosomal L18e/L15P superfamily / Ribosomal protein L3 signature.
Similarity search - Domain/homology
Small ribosomal subunit protein eS32 / Large ribosomal subunit protein eL42 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein eL24 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein eL33 / Large ribosomal subunit protein eL31 / Large ribosomal subunit protein eL21 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein eL6 ...Small ribosomal subunit protein eS32 / Large ribosomal subunit protein eL42 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein eL24 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein eL33 / Large ribosomal subunit protein eL31 / Large ribosomal subunit protein eL21 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein eL6 / Large ribosomal subunit protein uL15 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein eL8 / Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL6 / Large ribosomal subunit protein eL43 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein eL39 / Large ribosomal subunit protein eL15 / Large ribosomal subunit protein uL14 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein eL29 / Uncharacterized protein / Large ribosomal subunit protein eL22 / Large ribosomal subunit protein uL5 / Large ribosomal subunit protein eL32 / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein uL15/eL18 domain-containing protein / Large ribosomal subunit protein eL27 / Large ribosomal subunit protein eL28 / Large ribosomal subunit protein eL34 / Signal recognition particle subunit SRP72 / Signal recognition particle receptor subunit alpha / Signal recognition particle 19 kDa protein / Signal recognition particle 14 kDa protein / Signal recognition particle 9 kDa protein / Signal recognition particle subunit SRP54 / Ubiquitin-ribosomal protein eL40 fusion protein / Large ribosomal subunit protein eL19 / Signal recognition particle subunit SRP68 / Signal recognition particle receptor subunit beta / Large ribosomal subunit protein eL14 / Large ribosomal subunit protein eL37
Similarity search - Component
Biological speciesOryctolagus cuniculus (rabbit)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsJomaa A / Lee JH / Shan S / Ban N
Funding support Switzerland, 1 items
OrganizationGrant numberCountry
Swiss National Science Foundation Switzerland
CitationJournal: Sci Adv / Year: 2021
Title: Receptor compaction and GTPase rearrangement drive SRP-mediated cotranslational protein translocation into the ER.
Authors: Jae Ho Lee / Ahmad Jomaa / SangYoon Chung / Yu-Hsien Hwang Fu / Ruilin Qian / Xuemeng Sun / Hao-Hsuan Hsieh / Sowmya Chandrasekar / Xiaotian Bi / Simone Mattei / Daniel Boehringer / Shimon ...Authors: Jae Ho Lee / Ahmad Jomaa / SangYoon Chung / Yu-Hsien Hwang Fu / Ruilin Qian / Xuemeng Sun / Hao-Hsuan Hsieh / Sowmya Chandrasekar / Xiaotian Bi / Simone Mattei / Daniel Boehringer / Shimon Weiss / Nenad Ban / Shu-Ou Shan /
Abstract: The conserved signal recognition particle (SRP) cotranslationally delivers ~30% of the proteome to the eukaryotic endoplasmic reticulum (ER). The molecular mechanism by which eukaryotic SRP ...The conserved signal recognition particle (SRP) cotranslationally delivers ~30% of the proteome to the eukaryotic endoplasmic reticulum (ER). The molecular mechanism by which eukaryotic SRP transitions from cargo recognition in the cytosol to protein translocation at the ER is not understood. Here, structural, biochemical, and single-molecule studies show that this transition requires multiple sequential conformational rearrangements in the targeting complex initiated by guanosine triphosphatase (GTPase)-driven compaction of the SRP receptor (SR). Disruption of these rearrangements, particularly in mutant SRP54 linked to severe congenital neutropenia, uncouples the SRP/SR GTPase cycle from protein translocation. Structures of targeting intermediates reveal the molecular basis of early SRP-SR recognition and emphasize the role of eukaryote-specific elements in regulating targeting. Our results provide a molecular model for the structural and functional transitions of SRP throughout the targeting cycle and show that these transitions provide important points for biological regulation that can be perturbed in genetic diseases.
History
DepositionFeb 8, 2021-
Header (metadata) releaseJun 2, 2021-
Map releaseJun 2, 2021-
UpdateJun 2, 2021-
Current statusJun 2, 2021Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.02
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.02
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_12305.png

Downloads & links

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Map

FileDownload / File: emd_12305.map.gz / Format: CCP4 / Size: 343 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationMammalian ribosome nascent chain complex with SRP and SRP receptor in early state B
Voxel sizeX=Y=Z: 1.062 Å
Density
Contour LevelBy AUTHOR: 0.018 / Movie #1: 0.02
Minimum - Maximum-0.0622205 - 0.10382131
Average (Standard dev.)0.00037245595 (±0.0058315396)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions448448448
Spacing448448448
CellA=B=C: 475.776 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.0621.0621.062
M x/y/z448448448
origin x/y/z0.0000.0000.000
length x/y/z475.776475.776475.776
α/β/γ90.00090.00090.000
start NX/NY/NZ7297100
NX/NY/NZ181127145
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS448448448
D min/max/mean-0.0620.1040.000

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Supplemental data

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Sample components

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Entire : ribosome nascent chain complex with SRP and SRP receptor

EntireName: ribosome nascent chain complex with SRP and SRP receptor
Components
  • Complex: ribosome nascent chain complex with SRP and SRP receptor

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Supramolecule #1: ribosome nascent chain complex with SRP and SRP receptor

SupramoleculeName: ribosome nascent chain complex with SRP and SRP receptor
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#55
Source (natural)Organism: Oryctolagus cuniculus (rabbit)
Molecular weightTheoretical: 3.5 MDa

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
GridModel: Quantifoil R2/2 / Material: COPPER / Support film - Material: CARBON / Support film - topology: CONTINUOUS
VitrificationCryogen name: ETHANE-PROPANE / Instrument: FEI VITROBOT MARK IV
Detailsin-vitro translation system

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Electron microscopy

MicroscopeTFS KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal magnification: 81000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: Gctf
Startup modelType of model: INSILICO MODEL / In silico model: using SGD from particles
Initial angle assignmentType: PROJECTION MATCHING / Software - Name: RELION
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: RELION
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 29742

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