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- EMDB-4738: Endogeneous native human 20S proteasome with bound Fabs isolated ... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-4738 | |||||||||
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Title | Endogeneous native human 20S proteasome with bound Fabs isolated from less than 1 ul cell lysate | |||||||||
![]() | RELION3 post processed, local resolution filtered. | |||||||||
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![]() | native / human / 20S proteasome / proteasome / cryo-EM / microfluidic / CryoWriter / protein isolation / endogeneous / HYDROLASE | |||||||||
Function / homology | ![]() purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / Regulation of ornithine decarboxylase (ODC) / proteasome core complex / Cross-presentation of soluble exogenous antigens (endosomes) / Somitogenesis / immune system process / myofibril / NF-kappaB binding / proteasome endopeptidase complex ...purine ribonucleoside triphosphate binding / regulation of endopeptidase activity / Regulation of ornithine decarboxylase (ODC) / proteasome core complex / Cross-presentation of soluble exogenous antigens (endosomes) / Somitogenesis / immune system process / myofibril / NF-kappaB binding / proteasome endopeptidase complex / proteasome core complex, beta-subunit complex / proteasome core complex, alpha-subunit complex / threonine-type endopeptidase activity / negative regulation of inflammatory response to antigenic stimulus / : / sarcomere / proteasome complex / Regulation of activated PAK-2p34 by proteasome mediated degradation / ciliary basal body / proteolysis involved in protein catabolic process / Autodegradation of Cdh1 by Cdh1:APC/C / APC/C:Cdc20 mediated degradation of Securin / Asymmetric localization of PCP proteins / SCF-beta-TrCP mediated degradation of Emi1 / NIK-->noncanonical NF-kB signaling / Ubiquitin-dependent degradation of Cyclin D / AUF1 (hnRNP D0) binds and destabilizes mRNA / TNFR2 non-canonical NF-kB pathway / Vpu mediated degradation of CD4 / Assembly of the pre-replicative complex / Degradation of DVL / Ubiquitin Mediated Degradation of Phosphorylated Cdc25A / Dectin-1 mediated noncanonical NF-kB signaling / Cdc20:Phospho-APC/C mediated degradation of Cyclin A / Hh mutants are degraded by ERAD / lipopolysaccharide binding / Degradation of AXIN / Degradation of GLI1 by the proteasome / Activation of NF-kappaB in B cells / Hedgehog ligand biogenesis / Defective CFTR causes cystic fibrosis / Negative regulation of NOTCH4 signaling / GSK3B and BTRC:CUL1-mediated-degradation of NFE2L2 / G2/M Checkpoints / Vif-mediated degradation of APOBEC3G / Autodegradation of the E3 ubiquitin ligase COP1 / Hedgehog 'on' state / Regulation of RUNX3 expression and activity / P-body / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / MAPK6/MAPK4 signaling / APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 / response to virus / Degradation of beta-catenin by the destruction complex / ABC-family proteins mediated transport / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / response to organic cyclic compound / CDK-mediated phosphorylation and removal of Cdc6 / CLEC7A (Dectin-1) signaling / SCF(Skp2)-mediated degradation of p27/p21 / Regulation of expression of SLITs and ROBOs / nuclear matrix / FCERI mediated NF-kB activation / Regulation of PTEN stability and activity / Interleukin-1 signaling / Orc1 removal from chromatin / Regulation of RAS by GAPs / Separation of Sister Chromatids / Regulation of RUNX2 expression and activity / The role of GTSE1 in G2/M progression after G2 checkpoint / UCH proteinases / KEAP1-NFE2L2 pathway / Antigen processing: Ubiquitination & Proteasome degradation / Downstream TCR signaling / Neddylation / RUNX1 regulates transcription of genes involved in differentiation of HSCs / peptidase activity / positive regulation of NF-kappaB transcription factor activity / ER-Phagosome pathway / regulation of inflammatory response / proteasome-mediated ubiquitin-dependent protein catabolic process / secretory granule lumen / endopeptidase activity / response to oxidative stress / postsynapse / ficolin-1-rich granule lumen / nuclear body / ribosome / Ub-specific processing proteases / cadherin binding / intracellular membrane-bounded organelle / centrosome / ubiquitin protein ligase binding / synapse / Neutrophil degranulation / mitochondrion / proteolysis / RNA binding Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
![]() | Schmidli C / Albiez S / Rima L / Righetto R / Mohammed I / Oliva P / Kovacik L / Stahlberg H / Braun T | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Microfluidic protein isolation and sample preparation for high-resolution cryo-EM. Authors: Claudio Schmidli / Stefan Albiez / Luca Rima / Ricardo Righetto / Inayatulla Mohammed / Paolo Oliva / Lubomir Kovacik / Henning Stahlberg / Thomas Braun / ![]() Abstract: High-resolution structural information is essential to understand protein function. Protein-structure determination needs a considerable amount of protein, which can be challenging to produce, often ...High-resolution structural information is essential to understand protein function. Protein-structure determination needs a considerable amount of protein, which can be challenging to produce, often involving harsh and lengthy procedures. In contrast, the several thousand to a few million protein particles required for structure determination by cryogenic electron microscopy (cryo-EM) can be provided by miniaturized systems. Here, we present a microfluidic method for the rapid isolation of a target protein and its direct preparation for cryo-EM. Less than 1 μL of cell lysate is required as starting material to solve the atomic structure of the untagged, endogenous human 20S proteasome. Our work paves the way for high-throughput structure determination of proteins from minimal amounts of cell lysate and opens more opportunities for the isolation of sensitive, endogenous protein complexes. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 125.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 29.1 KB 29.1 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 13.6 KB | Display | ![]() |
Images | ![]() | 87 KB | ||
Filedesc metadata | ![]() | 8.6 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6r70MC ![]() 4628C ![]() 6r7mC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | |
EM raw data | ![]() Data size: 136.5 Data #1: Unaligned multi-frame micrographs of human 20S proteasome and TMV [micrographs - multiframe]) |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | RELION3 post processed, local resolution filtered. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.015 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : Native human 20S proteasome with bound Fabs to the two alpha-4 su...
+Supramolecule #1: Native human 20S proteasome with bound Fabs to the two alpha-4 su...
+Macromolecule #1: Proteasome subunit beta type-4
+Macromolecule #2: Proteasome subunit alpha type-2
+Macromolecule #3: Proteasome subunit alpha type-4
+Macromolecule #4: Proteasome subunit alpha type-7
+Macromolecule #5: Proteasome subunit alpha type-5
+Macromolecule #6: Proteasome subunit alpha type-1
+Macromolecule #7: Proteasome subunit alpha type-3
+Macromolecule #8: Proteasome subunit alpha type-6
+Macromolecule #9: Proteasome subunit beta type-7
+Macromolecule #10: Proteasome subunit beta type-3
+Macromolecule #11: Proteasome subunit beta type-2
+Macromolecule #12: Proteasome subunit beta type-5
+Macromolecule #13: Proteasome subunit beta type-1
+Macromolecule #14: Proteasome subunit beta type-6
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.4 Component:
Details: PBS was purchased from Sigma # D8537, Switzerland. | |||||||||||||||
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Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 45 sec. / Pretreatment - Atmosphere: AIR | |||||||||||||||
Vitrification | Cryogen name: ETHANE Details: CryoWriter. (see https://doi.org/10.1016/j.jsb.2016.11.002 for more information). | |||||||||||||||
Details | 20S proteasome was purified using Fabs and eluted in a buffer containing 1mg/ml tobacco mosaic virus (TMV). The sample contains also unbound Fabs. |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Dimensions - Width: 7676 pixel / Digitization - Dimensions - Height: 7420 pixel / Digitization - Frames/image: 0-30 / Number grids imaged: 1 / Number real images: 523 / Average exposure time: 6.0 sec. / Average electron dose: 72.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |