[English] 日本語
Yorodumi- PDB-6dzp: Cryo-EM Structure of Mycobacterium smegmatis C(minus) 50S ribosom... -
+Open data
-Basic information
Entry | Database: PDB / ID: 6dzp | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM Structure of Mycobacterium smegmatis C(minus) 50S ribosomal subunit | ||||||||||||
Components |
| ||||||||||||
Keywords | RIBOSOME / Hibernation factor complex | ||||||||||||
Function / homology | Function and homology information large ribosomal subunit / 5S rRNA binding / large ribosomal subunit rRNA binding / transferase activity / ribosomal large subunit assembly / cytosolic large ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome ...large ribosomal subunit / 5S rRNA binding / large ribosomal subunit rRNA binding / transferase activity / ribosomal large subunit assembly / cytosolic large ribosomal subunit / tRNA binding / rRNA binding / ribosome / structural constituent of ribosome / ribonucleoprotein complex / translation / cytoplasm Similarity search - Function | ||||||||||||
Biological species | Mycobacterium smegmatis str. MC2 155 (bacteria) Mycobacterium smegmatis (bacteria) | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.42 Å | ||||||||||||
Authors | Sharma, M.R. / Li, Y. / Korripella, R. / Yang, Y. / Kaushal, P.S. / Lin, Q. / Wade, J.T. / Gray, A.G. / Derbyshire, K.M. / Agrawal, R.K. / Ojha, A. | ||||||||||||
Funding support | United States, 3items
| ||||||||||||
Citation | Journal: Proc Natl Acad Sci U S A / Year: 2018 Title: Zinc depletion induces ribosome hibernation in mycobacteria. Authors: Yunlong Li / Manjuli R Sharma / Ravi K Koripella / Yong Yang / Prem S Kaushal / Qishan Lin / Joseph T Wade / Todd A Gray / Keith M Derbyshire / Rajendra K Agrawal / Anil K Ojha / Abstract: Bacteria respond to zinc starvation by replacing ribosomal proteins that have the zinc-binding CXXC motif (C+) with their zinc-free (C-) paralogues. Consequences of this process beyond zinc ...Bacteria respond to zinc starvation by replacing ribosomal proteins that have the zinc-binding CXXC motif (C+) with their zinc-free (C-) paralogues. Consequences of this process beyond zinc homeostasis are unknown. Here, we show that the C- ribosome in is the exclusive target of a bacterial protein Y homolog, referred to as mycobacterial-specific protein Y (MPY), which binds to the decoding region of the 30S subunit, thereby inactivating the ribosome. MPY binding is dependent on another mycobacterial protein, MPY recruitment factor (MRF), which is induced on zinc depletion, and interacts with C- ribosomes. MPY binding confers structural stability to C- ribosomes, promoting survival of growth-arrested cells under zinc-limiting conditions. Binding of MPY also has direct influence on the dynamics of aminoglycoside-binding pockets of the C- ribosome to inhibit binding of these antibiotics. Together, our data suggest that zinc limitation leads to ribosome hibernation and aminoglycoside resistance in mycobacteria. Furthermore, our observation of the expression of the proteins of C- ribosomes in in a mouse model of infection suggests that ribosome hibernation could be relevant in our understanding of persistence and drug tolerance of the pathogen encountered during chemotherapy of TB. | ||||||||||||
History |
| ||||||||||||
Remark 650 | HELIX DETERMINATION METHOD: AUTHOR | ||||||||||||
Remark 700 | SHEET DETERMINATION METHOD: AUTHOR |
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 6dzp.cif.gz | 2.1 MB | Display | PDBx/mmCIF format |
---|---|---|---|---|
PDB format | pdb6dzp.ent.gz | 1.6 MB | Display | PDB format |
PDBx/mmJSON format | 6dzp.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6dzp_validation.pdf.gz | 1023.1 KB | Display | wwPDB validaton report |
---|---|---|---|---|
Full document | 6dzp_full_validation.pdf.gz | 1.1 MB | Display | |
Data in XML | 6dzp_validation.xml.gz | 143.2 KB | Display | |
Data in CIF | 6dzp_validation.cif.gz | 253.8 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/dz/6dzp ftp://data.pdbj.org/pub/pdb/validation_reports/dz/6dzp | HTTPS FTP |
-Related structure data
Related structure data | 8937MC 8932C 8934C 6dziC 6dzkC M: map data used to model this data C: citing same article (ref.) |
---|---|
Similar structure data |
-Links
-Assembly
Deposited unit |
|
---|---|
1 |
|
-Components
-RNA chain , 2 types, 2 molecules AB
#1: RNA chain | Mass: 1011834.750 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Mycobacterium smegmatis str. MC2 155 (bacteria) Strain: ATCC 700084 / mc(2)155 / References: GenBank: 118168627 |
---|---|
#2: RNA chain | Mass: 38061.816 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Mycobacterium smegmatis str. MC2 155 (bacteria) Strain: ATCC 700084 / mc(2)155 / References: GenBank: 118168627 |
+50S ribosomal protein ... , 31 types, 31 molecules CDEFGHIJKLMNOPQRSTUVWXZabcdefgy
-Protein/peptide , 1 types, 1 molecules 3
#34: Protein/peptide | Mass: 2710.179 Da / Num. of mol.: 1 / Source method: isolated from a natural source Source: (natural) Mycobacterium smegmatis (strain ATCC 700084 / mc(2)155) (bacteria) Strain: ATCC 700084 / mc(2)155 / References: UniProt: A0QTP4 |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: Mycobacterium smegmatis C(minus) 70S ribosome with MPY Type: RIBOSOME Details: Cryo-EM structure of Mycobacterium smegmatis C (minus) 50S ribosomal subunit Entity ID: all / Source: NATURAL |
---|---|
Molecular weight | Experimental value: NO |
Source (natural) | Organism: Mycobacterium smegmatis str. MC2 155 (bacteria) |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Details: unspecified |
Vitrification | Instrument: FEI VITROBOT MARK I / Cryogen name: ETHANE / Humidity: 100 % |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 67 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
-Processing
EM software |
| |||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 205510 | |||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C2 (2 fold cyclic) | |||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.42 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 66840 / Algorithm: FOURIER SPACE / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL |