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- EMDB-37235: Human glutamate dehydrogenase I -

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Basic information

Entry
Database: EMDB / ID: EMD-37235
TitleHuman glutamate dehydrogenase I
Map data
Sample
  • Complex: human glutamate dehydrogenase I
    • Protein or peptide: Glutamate dehydrogenase 1, mitochondrial
Keywordsdehydrogenase / OXIDOREDUCTASE
Function / homology
Function and homology information


L-leucine binding / glutamate dehydrogenase [NAD(P)+] activity / glutamate catabolic process / tricarboxylic acid metabolic process / glutamate dehydrogenase [NAD(P)+] / glutamate biosynthetic process / glutamate dehydrogenase (NADP+) activity / Glutamate and glutamine metabolism / glutamate dehydrogenase (NAD+) activity / glutamine metabolic process ...L-leucine binding / glutamate dehydrogenase [NAD(P)+] activity / glutamate catabolic process / tricarboxylic acid metabolic process / glutamate dehydrogenase [NAD(P)+] / glutamate biosynthetic process / glutamate dehydrogenase (NADP+) activity / Glutamate and glutamine metabolism / glutamate dehydrogenase (NAD+) activity / glutamine metabolic process / NAD+ binding / Mitochondrial protein degradation / substantia nigra development / ADP binding / Transcriptional activation of mitochondrial biogenesis / positive regulation of insulin secretion / mitochondrial matrix / GTP binding / endoplasmic reticulum / protein homodimerization activity / mitochondrion / ATP binding / cytoplasm
Similarity search - Function
NAD(P) binding domain of glutamate dehydrogenase / Leu/Phe/Val dehydrogenases active site / Glu / Leu / Phe / Val dehydrogenases active site. / Glutamate/phenylalanine/leucine/valine dehydrogenase / Glutamate/phenylalanine/leucine/valine dehydrogenase, dimerisation domain / Glu/Leu/Phe/Val dehydrogenase, dimerisation domain / Glutamate/Leucine/Phenylalanine/Valine dehydrogenase / Glutamate/phenylalanine/leucine/valine dehydrogenase, C-terminal / Glutamate/Leucine/Phenylalanine/Valine dehydrogenase / Aminoacid dehydrogenase-like, N-terminal domain superfamily / NAD(P)-binding domain superfamily
Similarity search - Domain/homology
Glutamate dehydrogenase 1, mitochondrial
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.59 Å
AuthorsSu M-Y
Funding support China, 1 items
OrganizationGrant numberCountry
Other government2022A1515010856 China
CitationJournal: Structure / Year: 2023
Title: Cryo-EM structure of the KLHL22 E3 ligase bound to an oligomeric metabolic enzyme.
Authors: Fei Teng / Yang Wang / Ming Liu / Shuyun Tian / Goran Stjepanovic / Ming-Yuan Su /
Abstract: CULLIN-RING ligases constitute the largest group of E3 ubiquitin ligases. While some CULLIN family members recruit adapters before engaging further with different substrate receptors, homo-dimeric ...CULLIN-RING ligases constitute the largest group of E3 ubiquitin ligases. While some CULLIN family members recruit adapters before engaging further with different substrate receptors, homo-dimeric BTB-Kelch family proteins combine adapter and substrate receptor into a single polypeptide for the CULLIN3 family. However, the entire structural assembly and molecular details have not been elucidated to date. Here, we present a cryo-EM structure of the CULLIN3 in complex with Kelch-like protein 22 (KLHL22) and a mitochondrial glutamate dehydrogenase complex I (GDH1) at 3.06 Å resolution. The structure adopts a W-shaped architecture formed by E3 ligase dimers. Three CULLIN3 dimers were found to be dynamically associated with a single GDH1 hexamer. CULLIN3 ligase mediated the polyubiquitination of GDH1 in vitro. Together, these results enabled the establishment of a structural model for understanding the complete assembly of BTB-Kelch proteins with CULLIN3 and how together they recognize oligomeric substrates and target them for ubiquitination.
History
DepositionAug 20, 2023-
Header (metadata) releaseOct 25, 2023-
Map releaseOct 25, 2023-
UpdateNov 22, 2023-
Current statusNov 22, 2023Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_37235.png

Downloads & links

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Map

FileDownload / File: emd_37235.map.gz / Format: CCP4 / Size: 325 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
0.85 Å/pix.
x 440 pix.
= 374. Å		0.85 Å/pix.
x 440 pix.
= 374. Å		0.85 Å/pix.
x 440 pix.
= 374. Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.85 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.294
Minimum - Maximum-0.38421246 - 1.2698582
Average (Standard dev.)0.0053938543 (±0.039825745)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions440440440
Spacing440440440
CellA=B=C: 374.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_37235_half_map_1.map
Projections & Slices
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Half map: #1

Fileemd_37235_half_map_2.map
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Sample components

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Entire : human glutamate dehydrogenase I

EntireName: human glutamate dehydrogenase I
Components
  • Complex: human glutamate dehydrogenase I
    • Protein or peptide: Glutamate dehydrogenase 1, mitochondrial

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Supramolecule #1: human glutamate dehydrogenase I

SupramoleculeName: human glutamate dehydrogenase I / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Glutamate dehydrogenase 1, mitochondrial

MacromoleculeName: Glutamate dehydrogenase 1, mitochondrial / type: protein_or_peptide / ID: 1 / Number of copies: 6 / Enantiomer: LEVO / EC number: glutamate dehydrogenase [NAD(P)+]
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 61.480746 KDa
SequenceString: MYRYLGEALL LSRAGPAALG SASADSAALL GWARGQPAAA PQPGLALAAR RHYSEAVADR EDDPNFFKMV EGFFDRGASI VEDKLVEDL RTRESEEQKR NRVRGILRII KPCNHVLSLS FPIRRDDGSW EVIEGYRAQH SQHRTPCKGG IRYSTDVSVD E VKALASLM ...String:
MYRYLGEALL LSRAGPAALG SASADSAALL GWARGQPAAA PQPGLALAAR RHYSEAVADR EDDPNFFKMV EGFFDRGASI VEDKLVEDL RTRESEEQKR NRVRGILRII KPCNHVLSLS FPIRRDDGSW EVIEGYRAQH SQHRTPCKGG IRYSTDVSVD E VKALASLM TYKCAVVDVP FGGAKAGVKI NPKNYTDNEL EKITRRFTME LAKKGFIGPG IDVPAPDMST GEREMSWIAD TY ASTIGHY DINAHACVTG KPISQGGIHG RISATGRGVF HGIENFINEA SYMSILGMTP GFGDKTFVVQ GFGNVGLHSM RYL HRFGAK CIAVGESDGS IWNPDGIDPK ELEDFKLQHG SILGFPKAKP YEGSILEADC DILIPAASEK QLTKSNAPRV KAKI IAEGA NGPTTPEADK IFLERNIMVI PDLYLNAGGV TVSYFEWLKN LNHVSYGRLT FKYERDSNYH LLMSVQESLE RKFGK HGGT IPIVPTAEFQ DRISGASEKD IVHSGLAYTM ERSARQIMRT AMKYNLGLDL RTAAYVNAIE KVFKVYNEAG VTFT

UniProtKB: Glutamate dehydrogenase 1, mitochondrial

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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

Concentration0.6 mg/mL
BufferpH: 7.4
Details: 20 mM HEPES pH 7.4, 200 mM NaCl, 2 mM MgCl2 and 0.5 mM TCEP
GridModel: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 1.072 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.9000000000000001 µm / Nominal defocus min: 1.1 µm
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

1l1f

Final reconstructionApplied symmetry - Point group: D3 (2x3 fold dihedral) / Resolution.type: BY AUTHOR / Resolution: 2.59 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 79181
Initial angle assignmentType: OTHER
Final angle assignmentType: OTHER

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Atomic model buiding 1

Initial modelPDB ID:

1l1f


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-8kgy:
Human glutamate dehydrogenase I

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