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- EMDB-11637: Cryo-EM structure of Oxa1L-bound human mitoribosomal large subunit -

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Basic information

Entry
Database: EMDB / ID: EMD-11637
TitleCryo-EM structure of Oxa1L-bound human mitoribosomal large subunit
Map datapostprocessed masked map
Sample
  • Complex: human mitoribosome
Function / homology
Function and homology information


mitochondrial translational termination / mitochondrial translational elongation / mitochondrial ribosome assembly / translation release factor activity, codon nonspecific / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / translation release factor activity / mitochondrial large ribosomal subunit / negative regulation of mitotic nuclear division ...mitochondrial translational termination / mitochondrial translational elongation / mitochondrial ribosome assembly / translation release factor activity, codon nonspecific / Mitochondrial translation elongation / Mitochondrial translation termination / Mitochondrial translation initiation / translation release factor activity / mitochondrial large ribosomal subunit / negative regulation of mitotic nuclear division / peptidyl-tRNA hydrolase / mitochondrial ribosome / Hydrolases; Acting on ester bonds; Endoribonucleases producing 5'-phosphomonoesters / mitochondrial small ribosomal subunit / peptidyl-tRNA hydrolase activity / mitochondrial translation / positive regulation of proteolysis / ribosomal small subunit binding / anatomical structure morphogenesis / RNA processing / rescue of stalled ribosome / Mitochondrial protein degradation / cellular response to leukemia inhibitory factor / apoptotic signaling pathway / fibrillar center / cell junction / regulation of translation / large ribosomal subunit / double-stranded RNA binding / ribosomal small subunit assembly / small ribosomal subunit / large ribosomal subunit rRNA binding / small ribosomal subunit rRNA binding / endonuclease activity / nuclear membrane / tRNA binding / cell population proliferation / mitochondrial inner membrane / negative regulation of translation / rRNA binding / nuclear body / ribosome / structural constituent of ribosome / mitochondrial matrix / protein domain specific binding / translation / ribonucleoprotein complex / nucleotide binding / intracellular membrane-bounded organelle / mRNA binding / apoptotic process / GTP binding / nucleolus / mitochondrion / RNA binding / nucleoplasm / nucleus / plasma membrane / cytosol / cytoplasm
Similarity search - Function
Coiled-coil-helix-coiled-coil-helix domain-containing protein 1 / Cysteine alpha-hairpin motif superfamily / 28S ribosomal protein S26 / Mitochondrial ribosome subunit S26 / 28S ribosomal protein S27, mitochondrial / MRPS27/PTCD2 / Mitochondrial 28S ribosomal protein S27 / Ribosomal protein S22, mitochondrial / Ribosomal protein S23, mitochondrial / Ribosomal protein S23/S25, mitochondrial ...Coiled-coil-helix-coiled-coil-helix domain-containing protein 1 / Cysteine alpha-hairpin motif superfamily / 28S ribosomal protein S26 / Mitochondrial ribosome subunit S26 / 28S ribosomal protein S27, mitochondrial / MRPS27/PTCD2 / Mitochondrial 28S ribosomal protein S27 / Ribosomal protein S22, mitochondrial / Ribosomal protein S23, mitochondrial / Ribosomal protein S23/S25, mitochondrial / Mitochondrial 28S ribosomal protein S31 / : / Mitochondrial 28S ribosomal protein S22 / Mitochondrial ribosomal protein S23 / Mitochondrial 28S ribosomal protein S31 / Ribosomal protein S29, mitochondrial / Ribosomal protein S28, mitochondrial / Mitochondrial 28S ribosomal protein S34 / 28S ribosomal protein S10, mitochondrial / Mitochondrial ribosomal protein MRP-S35 / Mitochondrial 28S ribosomal protein S34 / 28S ribosomal protein S24, mitochondrial / Pentatricopeptide repeat domain-containing protein 3 / 28S ribosomal protein S17, mitochondrial / 28S ribosomal protein S18b, mitochondrial / : / : / Mitochondrial ribosome subunit S24 / Small ribosomal subunit protein uS5m, N-terminal / Small ribosomal subunit protein mS39, PPR / : / 28S ribosomal protein S25, mitochondrial / : / Ribosomal protein L55, mitochondrial / Mitochondrial ribosomal protein L55 superfamily / Mitochondrial ribosomal protein L55 / Mitochondrial ribosomal protein L48 / 39S ribosomal protein L40, mitochondrial / Ribosomal protein S30, mitochondrial / Ribosomal protein L53, mitochondrial / 39S ribosomal protein L53/MRP-L53 / 39S ribosomal protein L42, mitochondrial / Mitochondrial 28S ribosomal protein S32 / Ribosomal protein L37, mitochondrial / Ribosomal protein L28/L40, mitochondrial / Mitochondrial ribosomal protein L37 / Mitochondrial ribosomal protein L28 / Pentatricopeptide repeat domain / Ribosomal protein 63, mitochondrial / Growth arrest/ DNA-damage-inducible protein-interacting protein 1 / Ribosomal protein L51, mitochondrial / Growth arrest and DNA-damage-inducible proteins-interacting protein 1 / Mitochondrial ribosomal subunit / Mitochondrial ribosome protein 63 / Ribosomal protein L37/S30 / Growth arrest and DNA damage-inducible proteins-interacting protein 1 domain superfamily / : / : / Mitochondrial 28S ribosomal protein S30 (PDCD9) / Ribosomal protein S27/S33, mitochondrial / Ribosomal protein L35, mitochondrial / 39S ribosomal protein L52, mitochondrial / Ribosomal protein S24/S35, mitochondrial / Mitochondrial ribosomal subunit S27 / Mitoribosomal protein mL52 / : / MRPL44, double-stranded RNA binding domain / : / MRPL44 dsRNA-binding domain / Large ribosomal subunit protein mL44, endonuclease domain / : / Large ribosomal subunit protein bL9m C-terminal domain / Tim44-like domain / Tim44-like domain / Tim44 / Ribosomal protein S24/S35, mitochondrial, conserved domain / Mitochondrial ribosomal subunit protein / Mitochondrial ribosomal protein L46 NUDIX / : / : / Ribosomal protein L46, N-terminal / 39S mitochondrial ribosomal protein L46 / Pentatricopeptide (PPR) repeat profile. / Ribosomal protein L50, mitochondria / Ribosomal subunit 39S / Ribosomal protein L49/IMG2 / Mitochondrial large subunit ribosomal protein (Img2) / Ribosomal protein L27/L41, mitochondrial / : / Mitochondrial ribosomal protein L27 / Ribosomal protein S23/S29, mitochondrial / Mitochondrial ribosomal death-associated protein 3 / 39S ribosomal protein L46, mitochondrial / Pentatricopeptide repeat / Mitochondrial mRNA-processing protein COX24, C-terminal / Mitochondrial mRNA-processing protein COX24, C-terminal / Mitochondrial domain of unknown function (DUF1713) / 39S ribosomal protein L43/54S ribosomal protein L51 / Ribosomal protein L47, mitochondrial / MRP-L47 superfamily, mitochondrial
Similarity search - Domain/homology
Large ribosomal subunit protein mL52 / Mitochondrial ribosomal protein L18, isoform CRA_b / Large ribosomal subunit protein uL22m / Small ribosomal subunit protein uS12m / Small ribosomal subunit protein uS14m / Large ribosomal subunit protein bL33m / Large ribosomal subunit protein uL3m / Large ribosomal subunit protein bL19m / Small ribosomal subunit protein mS29 / Small ribosomal subunit protein mS22 ...Large ribosomal subunit protein mL52 / Mitochondrial ribosomal protein L18, isoform CRA_b / Large ribosomal subunit protein uL22m / Small ribosomal subunit protein uS12m / Small ribosomal subunit protein uS14m / Large ribosomal subunit protein bL33m / Large ribosomal subunit protein uL3m / Large ribosomal subunit protein bL19m / Small ribosomal subunit protein mS29 / Small ribosomal subunit protein mS22 / Small ribosomal subunit protein mS25 / Small ribosomal subunit protein uS10m / Small ribosomal subunit protein mS35 / Small ribosomal subunit protein uS5m / Small ribosomal subunit protein uS11m / Small ribosomal subunit protein uS15m / Small ribosomal subunit protein bS21m / Small ribosomal subunit protein mS34 / Small ribosomal subunit protein bS6m / Small ribosomal subunit protein uS9m / Large ribosomal subunit protein bL28m / Large ribosomal subunit protein mL49 / Large ribosomal subunit protein mL62 / Large ribosomal subunit protein uL23m / Large ribosomal subunit protein mL51 / Large ribosomal subunit protein uL2m / Large ribosomal subunit protein mL54 / Large ribosomal subunit protein uL14m / Large ribosomal subunit protein bL21m / Large ribosomal subunit protein mL55 / Large ribosomal subunit protein uL10m / Large ribosomal subunit protein mL41 / Large ribosomal subunit protein mL50 / Large ribosomal subunit protein mL43 / Large ribosomal subunit protein mL64 / Large ribosomal subunit protein uL30m / Small ribosomal subunit protein mS27 / Small ribosomal subunit protein mS31 / Large ribosomal subunit protein uL24m / Small ribosomal subunit protein mS37 / Large ribosomal subunit protein mL38 / Small ribosomal subunit protein uS3m / Large ribosomal subunit protein mL53 / Small ribosomal subunit protein mS39 / Large ribosomal subunit protein mL48 / Large ribosomal subunit protein bL34m / Large ribosomal subunit protein mL63 / Large ribosomal subunit protein mL45 / Large ribosomal subunit protein bL32m / Large ribosomal subunit protein bL20m / Large ribosomal subunit protein uL13m / Large ribosomal subunit protein bL9m / Large ribosomal subunit protein uL4m / Small ribosomal subunit protein mS26 / Large ribosomal subunit protein mL37 / Large ribosomal subunit protein mL46 / Large ribosomal subunit protein mL44 / Large ribosomal subunit protein uL29m / Large ribosomal subunit protein mL65 / Large ribosomal subunit protein mL40 / Large ribosomal subunit protein bL17m / Large ribosomal subunit protein mL66 / Small ribosomal subunit protein mS38 / Large ribosomal subunit protein uL16m / Large ribosomal subunit protein mL39 / Large ribosomal subunit protein bL35m / Large ribosomal subunit protein uL15m / Large ribosomal subunit protein bL36m / Large ribosomal subunit protein bL27m / Small ribosomal subunit protein mS33 / Small ribosomal subunit protein bS1m / Small ribosomal subunit protein uS17m / Small ribosomal subunit protein uS7m / Small ribosomal subunit protein uS2m / Large ribosomal subunit protein uL11m / Small ribosomal subunit protein bS16m / Small ribosomal subunit protein bS18m / Small ribosomal subunit protein mS23 / Small ribosomal subunit protein mS40 / Large ribosomal subunit protein mL42
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.1 Å
AuthorsDesai N / Yang H / Chandrasekaran V / Kazi R / Minczuk M / Ramakrishnan V
Funding support United Kingdom, 3 items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MC_U105184332 United Kingdom
Louis-Jeantet Foundation United Kingdom
Wellcome TrustWT096570 United Kingdom
CitationJournal: Science / Year: 2020
Title: Elongational stalling activates mitoribosome-associated quality control.
Authors: Nirupa Desai / Hanting Yang / Viswanathan Chandrasekaran / Razina Kazi / Michal Minczuk / V Ramakrishnan /
Abstract: The human mitochondrial ribosome (mitoribosome) and associated proteins regulate the synthesis of 13 essential subunits of the oxidative phosphorylation complexes. We report the discovery of a ...The human mitochondrial ribosome (mitoribosome) and associated proteins regulate the synthesis of 13 essential subunits of the oxidative phosphorylation complexes. We report the discovery of a mitoribosome-associated quality control pathway that responds to interruptions during elongation, and we present structures at 3.1- to 3.3-angstrom resolution of mitoribosomal large subunits trapped during ribosome rescue. Release factor homolog C12orf65 (mtRF-R) and RNA binding protein C6orf203 (MTRES1) eject the nascent chain and peptidyl transfer RNA (tRNA), respectively, from stalled ribosomes. Recruitment of mitoribosome biogenesis factors to these quality control intermediates suggests additional roles for these factors during mitoribosome rescue. We also report related cryo-electron microscopy structures (3.7 to 4.4 angstrom resolution) of elongating mitoribosomes bound to tRNAs, nascent polypeptides, the guanosine triphosphatase elongation factors mtEF-Tu and mtEF-G1, and the Oxa1L translocase.
History
DepositionAug 19, 2020-
Header (metadata) releaseDec 9, 2020-
Map releaseDec 9, 2020-
UpdateDec 9, 2020-
Current statusDec 9, 2020Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.12
  • Imaged by UCSF Chimera
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  • Surface view colored by height
  • Surface level: 0.12
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_11637.png

Downloads & links

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Map

FileDownload / File: emd_11637.map.gz / Format: CCP4 / Size: 512 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationpostprocessed masked map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.26 Å/pix.
x 512 pix.
= 644.803 Å		1.26 Å/pix.
x 512 pix.
= 644.803 Å		1.26 Å/pix.
x 512 pix.
= 644.803 Å

Surface

Projections

Slices (1/3)

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.25938 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.09 / Movie #1: 0.12
Minimum - Maximum-0.6385405 - 1.1290559
Average (Standard dev.)0.00023976862 (±0.015596709)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions512512512
Spacing512512512
CellA=B=C: 644.80255 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.2593808593751.2593808593751.259380859375
M x/y/z512512512
origin x/y/z0.0000.0000.000
length x/y/z644.803644.803644.803
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ240240240
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS512512512
D min/max/mean-0.6391.1290.000

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Supplemental data

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Mask #1

Fileemd_11637_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: refined map

Fileemd_11637_additional_1.map
Annotationrefined map
Projections & Slices
AxesZYX

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Density Histograms

Histogram

Histogram (log scale)

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Half map: Half1 map

Fileemd_11637_half_map_1.map
AnnotationHalf1 map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half2 map

Fileemd_11637_half_map_2.map
AnnotationHalf2 map
Projections & Slices
AxesZYX

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Sample components

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Entire : human mitoribosome

EntireName: human mitoribosome
Components
  • Complex: human mitoribosome

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Supramolecule #1: human mitoribosome

SupramoleculeName: human mitoribosome / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#88
Source (natural)Organism: Homo sapiens (human)

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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

Concentration0.4 mg/mL
BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Detector mode: INTEGRATING / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.1 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 114797
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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