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- PDB-8hiq: cryoEM structure of glutamate dehydrogenase from Thermococcus pro... -

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Basic information

Entry
Database: PDB / ID: 8hiq
TitlecryoEM structure of glutamate dehydrogenase from Thermococcus profundus in complex with NADP
ComponentsGlutamate dehydrogenase
KeywordsOXIDOREDUCTASE / Complex / Coenzyme / NADP
Function / homology
Function and homology information


glutamate dehydrogenase [NAD(P)+] / glutamate dehydrogenase (NADP+) activity / glutamate dehydrogenase (NAD+) activity / amino acid metabolic process
Similarity search - Function
Glutamate dehydrogenase / 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 ...Glutamate dehydrogenase / 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
NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / Glutamate dehydrogenase
Similarity search - Component
Biological speciesThermococcus profundus (archaea)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsWakabayashi, T. / Oide, M. / Kato, T. / Nakasako, M.
Funding support Japan, 14items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)jp13480214 Japan
Japan Society for the Promotion of Science (JSPS)jp19204042 Japan
Japan Society for the Promotion of Science (JSPS)jp22244054 Japan
Japan Society for the Promotion of Science (JSPS)jp21H01050 Japan
Japan Society for the Promotion of Science (JSPS)jp26800227 Japan
Japan Society for the Promotion of Science (JSPS)jp18J11653 Japan
Ministry of Education, Culture, Sports, Science and Technology (Japan)jp15076210 Japan
Ministry of Education, Culture, Sports, Science and Technology (Japan)jp20050030 Japan
Ministry of Education, Culture, Sports, Science and Technology (Japan)jp22018027 Japan
Ministry of Education, Culture, Sports, Science and Technology (Japan)jp23120525 Japan
Ministry of Education, Culture, Sports, Science and Technology (Japan)jp25120725 Japan
Ministry of Education, Culture, Sports, Science and Technology (Japan)jp15H01647 Japan
Ministry of Education, Culture, Sports, Science and Technology (Japan)jp17H05891 Japan
Japan Science and TechnologyJPMJPR22E2 Japan
CitationJournal: FEBS J / Year: 2023
Title: Coenzyme-binding pathway on glutamate dehydrogenase suggested from multiple-binding sites visualized by cryo-electron microscopy.
Authors: Taiki Wakabayashi / Mao Oide / Takayuki Kato / Masayoshi Nakasako /
Abstract: The structure of hexameric glutamate dehydrogenase (GDH) in the presence of the coenzyme nicotinamide adenine dinucleotide phosphate (NADP) was visualized using cryogenic transmission electron ...The structure of hexameric glutamate dehydrogenase (GDH) in the presence of the coenzyme nicotinamide adenine dinucleotide phosphate (NADP) was visualized using cryogenic transmission electron microscopy to investigate the ligand-binding pathways to the active site of the enzyme. Each subunit of GDH comprises one hexamer-forming core domain and one nucleotide-binding domain (NAD domain), which spontaneously opens and closes the active-site cleft situated between the two domains. In the presence of NADP, the potential map of GDH hexamer, assuming D3 symmetry, was determined at a resolution of 2.4 Å, but the NAD domain was blurred due to the conformational variety. After focused classification with respect to the NAD domain, the potential maps interpreted as NADP molecules appeared at five different sites in the active-site cleft. The subunits associated with NADP molecules were close to one of the four metastable conformations in the unliganded state. Three of the five binding sites suggested a pathway of NADP molecules to approach the active-site cleft for initiating the enzymatic reaction. The other two binding modes may rarely appear in the presence of glutamate, as demonstrated by the reaction kinetics. Based on the visualized structures and the results from the enzymatic kinetics, we discussed the binding modes of NADP to GDH in the absence and presence of glutamate.
History
DepositionNov 21, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Feb 8, 2023Provider: repository / Type: Initial release
Revision 2.0Aug 9, 2023Group: Atomic model / Derived calculations / Structure summary
Category: atom_site / pdbx_contact_author / struct_conf
Item: _atom_site.B_iso_or_equiv / _atom_site.Cartn_x ..._atom_site.B_iso_or_equiv / _atom_site.Cartn_x / _atom_site.Cartn_y / _atom_site.Cartn_z / _atom_site.pdbx_formal_charge / _struct_conf.beg_auth_comp_id / _struct_conf.beg_auth_seq_id / _struct_conf.beg_label_comp_id / _struct_conf.beg_label_seq_id / _struct_conf.pdbx_PDB_helix_length
Description: Atomic clashes
Details: All close contacts between heavy atoms were removed.
Provider: author / Type: Coordinate replacement
Revision 2.1Sep 20, 2023Group: Data collection / Database references
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _citation_author.identifier_ORCID
Revision 2.2Dec 20, 2023Group: Database references / Category: citation / citation_author
Item: _citation.journal_volume / _citation.page_first ..._citation.journal_volume / _citation.page_first / _citation.page_last / _citation_author.identifier_ORCID

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Glutamate dehydrogenase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)47,5022
Polymers46,7581
Non-polymers7431
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: SAXS
TypeNameSymmetry operationNumber
identity operation1_5551
SymmetryPoint symmetry: (Schoenflies symbol: D3 (2x3 fold dihedral))

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Components

#1: Protein Glutamate dehydrogenase /


Mass: 46758.477 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Thermococcus profundus (archaea) / Gene: gdhA / Production host: Escherichia coli (E. coli)
References: UniProt: O74024, glutamate dehydrogenase [NAD(P)+]
#2: Chemical ChemComp-NAP / NADP NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE / 2'-MONOPHOSPHOADENOSINE 5'-DIPHOSPHORIBOSE / Nicotinamide adenine dinucleotide phosphate


Mass: 743.405 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C21H28N7O17P3 / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Hexamer of glutamate dehydrogenase in the presence of NADP
Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 0.264 MDa / Experimental value: YES
Source (natural)Organism: Thermococcus profundus (archaea)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
13.0 mMnicotinamide adenine dinucleotide phosphateNADPNicotinamide adenine dinucleotide phosphate1
2135 mMsodium chlorideNaClSodium chloride1
315 mMtris(hydroxymethyl)aminomethaneTris1
SpecimenConc.: 0.0036 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: MOLYBDENUM / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K

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Electron microscopy imaging

MicroscopyModel: JEOL CRYO ARM 300
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 3300 nm / Nominal defocus min: 500 nm
Specimen holderCryogen: NITROGEN
Image recordingElectron dose: 1.2 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of real images: 10389

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Processing

EM software
IDNameVersionCategory
1RELION3particle selection
4WarpCTF correction
7Cootmodel fitting
9PHENIXmodel refinement
10RELION3initial Euler assignment
11RELION3final Euler assignment
13RELION33D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 3037558
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionResolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 78270 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT

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