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- EMDB-8649: Cryo-EM structure of the large ribosomal subunit from Mycobacteri... -

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Basic information

Entry
Database: EMDB / ID: EMD-8649
TitleCryo-EM structure of the large ribosomal subunit from Mycobacterium tuberculosis at 1 mM magnesium concentration
Map datalarge ribosomal subunit from Mycobacterium tuberculosis at 1 mM magnesium concentration
Sample
  • Complex: Ribosome large subunit from human pathogen Mycobacterium tuberculosis
Function / homology
Function and homology information


cell wall / peptidoglycan-based cell wall / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / large ribosomal subunit / 5S rRNA binding / cytoplasmic translation / cytosolic large ribosomal subunit / transferase activity / tRNA binding ...cell wall / peptidoglycan-based cell wall / ribosomal large subunit assembly / large ribosomal subunit rRNA binding / large ribosomal subunit / 5S rRNA binding / cytoplasmic translation / cytosolic large ribosomal subunit / transferase activity / tRNA binding / negative regulation of translation / rRNA binding / ribosome / structural constituent of ribosome / translation / ribonucleoprotein complex / mRNA binding / RNA binding / metal ion binding / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Ribosomal protein L25, long-form / Ribosomal protein L25, beta domain / Ribosomal protein L25, C-terminal / Ribosomal protein TL5, C-terminal domain / Ribosomal protein L31 type A / Ribosomal protein L31 signature. / Ribosomal protein L31 / Ribosomal protein L31 superfamily / Ribosomal protein L31 / Ribosomal protein L21, conserved site ...Ribosomal protein L25, long-form / Ribosomal protein L25, beta domain / Ribosomal protein L25, C-terminal / Ribosomal protein TL5, C-terminal domain / Ribosomal protein L31 type A / Ribosomal protein L31 signature. / Ribosomal protein L31 / Ribosomal protein L31 superfamily / Ribosomal protein L31 / Ribosomal protein L21, conserved site / Ribosomal protein L21 signature. / Ribosomal protein L16 signature 1. / : / Ribosomal protein L6, conserved site / Ribosomal protein L6 signature 1. / Ribosomal protein L16, conserved site / Ribosomal protein L16 signature 2. / Ribosomal protein L17 signature. / Ribosomal protein L9 signature. / Ribosomal protein L9, bacteria/chloroplast / Ribosomal protein L9, C-terminal / Ribosomal protein L9, C-terminal domain / Ribosomal protein L9, C-terminal domain superfamily / Ribosomal L25p family / Ribosomal protein L25 / Ribosomal protein L28/L24 superfamily / Ribosomal protein L36 signature. / Ribosomal protein L25/Gln-tRNA synthetase, N-terminal / Ribosomal protein L25/Gln-tRNA synthetase, anti-codon-binding domain superfamily / Ribosomal protein L9, N-terminal domain superfamily / Ribosomal protein L9 / Ribosomal protein L9, N-terminal / Ribosomal protein L9, N-terminal domain / Ribosomal protein L28 / Ribosomal protein L35, conserved site / Ribosomal protein L35 signature. / Ribosomal protein L33, conserved site / Ribosomal protein L33 signature. / Ribosomal protein L35, non-mitochondrial / Ribosomal protein L5, bacterial-type / Ribosomal protein L6, bacterial-type / Ribosomal protein L18, bacterial-type / Ribosomal protein L19, conserved site / Ribosomal protein L19 signature. / Ribosomal protein L36 / Ribosomal protein L36 superfamily / Ribosomal protein L36 / Ribosomal protein L9/RNase H1, N-terminal / Ribosomal protein L20 signature. / Ribosomal protein L27, conserved site / Ribosomal protein L27 signature. / Ribosomal protein L14P, bacterial-type / Ribosomal protein L34, conserved site / Ribosomal protein L34 signature. / Ribosomal protein L22, bacterial/chloroplast-type / Ribosomal protein L35 / Ribosomal protein L35 superfamily / Ribosomal protein L2, bacterial/organellar-type / Ribosomal protein L35 / Ribosomal L28 family / Ribosomal protein L33 / Ribosomal protein L33 / Ribosomal protein L28/L24 / Ribosomal protein L33 superfamily / : / Ribosomal protein L30, bacterial-type / Ribosomal protein L16 / Ribosomal protein L18 / Ribosomal L18 of archaea, bacteria, mitoch. and chloroplast / L28p-like / Ribosomal protein L20 / Ribosomal protein L20 / Ribosomal protein L20, C-terminal / Ribosomal protein L21 / Ribosomal protein L27 / Ribosomal L27 protein / Ribosomal protein L19 / Ribosomal protein L19 superfamily / Ribosomal protein L19 / Ribosomal proteins 50S L24/mitochondrial 39S L24 / Ribosomal protein L17 / Ribosomal protein L17 superfamily / Ribosomal protein L17 / Ribosomal protein L21-like / L21-like superfamily / Ribosomal prokaryotic L21 protein / Ribosomal L32p protein family / Ribosomal protein L24 / Ribosomal protein L32p / Ribosomal protein L34 / Ribosomal protein L34 / Ribosomal protein L13, bacterial-type / Ribosomal protein L3, bacterial/organelle-type / Ribosomal protein L15, bacterial-type / 50S ribosomal protein uL4 / Ribosomal protein L23/L25, conserved site / Ribosomal protein L23 signature. / Ribosomal protein L29, conserved site / Ribosomal protein L30, conserved site / Ribosomal protein L30 signature.
Similarity search - Domain/homology
Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL2 / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein bL31 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein bL33 / Large ribosomal subunit protein uL5 / Large ribosomal subunit protein bL28 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein bL32 ...Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL2 / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein bL31 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein bL33 / Large ribosomal subunit protein uL5 / Large ribosomal subunit protein bL28 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein bL32 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein bL17 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein bL25 / Large ribosomal subunit protein uL6 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein bL9 / Large ribosomal subunit protein bL27 / Large ribosomal subunit protein bL20 / Large ribosomal subunit protein bL35 / 50S ribosomal protein L15 / Large ribosomal subunit protein uL13 / 50S ribosomal protein L14 / : / : / : / Large ribosomal subunit protein bL9 / Large ribosomal subunit protein uL6 / Large ribosomal subunit protein uL5 / Large ribosomal subunit protein uL4 / Large ribosomal subunit protein uL3 / Large ribosomal subunit protein bL36 / Large ribosomal subunit protein bL35 / Large ribosomal subunit protein bL34 / Large ribosomal subunit protein bL33B / Large ribosomal subunit protein bL32 / Large ribosomal subunit protein bL31 / Large ribosomal subunit protein uL30 / Large ribosomal subunit protein uL2 / Large ribosomal subunit protein uL29 / Large ribosomal subunit protein bL27 / Large ribosomal subunit protein bL25 / Large ribosomal subunit protein uL24 / Large ribosomal subunit protein uL23 / Large ribosomal subunit protein uL22 / Large ribosomal subunit protein bL21 / Large ribosomal subunit protein bL20 / Large ribosomal subunit protein bL19 / Large ribosomal subunit protein uL18 / Large ribosomal subunit protein bL17 / Large ribosomal subunit protein uL16 / Large ribosomal subunit protein uL15 / 50S ribosomal protein L14 / 50S ribosomal protein L13
Similarity search - Component
Biological speciesMycobacterium tuberculosis (bacteria)
Methodsingle particle reconstruction / cryo EM / Resolution: 6.0 Å
AuthorsYang K / Chang J-Y / Cui Z / Zhang J
CitationJournal: Nucleic Acids Res / Year: 2017
Title: Structural insights into species-specific features of the ribosome from the human pathogen Mycobacterium tuberculosis.
Authors: Kailu Yang / Jeng-Yih Chang / Zhicheng Cui / Xiaojun Li / Ran Meng / Lijun Duan / Jirapat Thongchol / Joanita Jakana / Christoph M Huwe / James C Sacchettini / Junjie Zhang /
Abstract: Ribosomes from Mycobacterium tuberculosis (Mtb) possess species-specific ribosomal RNA (rRNA) expansion segments and ribosomal proteins (rProtein). Here, we present the near-atomic structures of the ...Ribosomes from Mycobacterium tuberculosis (Mtb) possess species-specific ribosomal RNA (rRNA) expansion segments and ribosomal proteins (rProtein). Here, we present the near-atomic structures of the Mtb 50S ribosomal subunit and the complete Mtb 70S ribosome, solved by cryo-electron microscopy. Upon joining of the large and small ribosomal subunits, a 100-nt long expansion segment of the Mtb 23S rRNA, named H54a or the 'handle', switches interactions from with rRNA helix H68 and rProtein uL2 to with rProtein bS6, forming a new intersubunit bridge 'B9'. In Mtb 70S, bridge B9 is mostly maintained, leading to correlated motions among the handle, the L1 stalk and the small subunit in the rotated and non-rotated states. Two new protein densities were discovered near the decoding center and the peptidyl transferase center, respectively. These results provide a structural basis for studying translation in Mtb as well as developing new tuberculosis drugs.
History
DepositionMar 23, 2017-
Header (metadata) releaseApr 19, 2017-
Map releaseSep 20, 2017-
UpdateFeb 3, 2021-
Current statusFeb 3, 2021Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.04
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_8649.png

Downloads & links

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Map

FileDownload / File: emd_8649.map.gz / Format: CCP4 / Size: 15.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationlarge ribosomal subunit from Mycobacterium tuberculosis at 1 mM magnesium concentration
Voxel sizeX=Y=Z: 2.244 Å
Density
Contour LevelBy AUTHOR: 0.04 / Movie #1: 0.04
Minimum - Maximum-0.045822825 - 0.15810594
Average (Standard dev.)0.0022882523 (±0.011239315)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions160160160
Spacing160160160
CellA=B=C: 359.03998 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z2.2442.2442.244
M x/y/z160160160
origin x/y/z0.0000.0000.000
length x/y/z359.040359.040359.040
α/β/γ90.00090.00090.000
start NX/NY/NZ-210-210-210
NX/NY/NZ420420420
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS160160160
D min/max/mean-0.0460.1580.002

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Supplemental data

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Sample components

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Entire : Ribosome large subunit from human pathogen Mycobacterium tuberculosis

EntireName: Ribosome large subunit from human pathogen Mycobacterium tuberculosis
Components
  • Complex: Ribosome large subunit from human pathogen Mycobacterium tuberculosis

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Supramolecule #1: Ribosome large subunit from human pathogen Mycobacterium tuberculosis

SupramoleculeName: Ribosome large subunit from human pathogen Mycobacterium tuberculosis
type: complex / ID: 1 / Parent: 0 / Details: The concentration of magnesium is 1 mM.
Source (natural)Organism: Mycobacterium tuberculosis (bacteria)

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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
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TECNAI F20
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 0.72 e/Å2
Experimental equipment
Model: Tecnai F20 / Image courtesy: FEI Company

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Image processing

Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION
Final reconstructionResolution.type: BY AUTHOR / Resolution: 6.0 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 111219
FSC plot (resolution estimation)

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