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- PDB-8c54: Cryo-EM structure of NADH bound SLA dehydrogenase RlGabD from Rhi... -
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Basic information
Entry | Database: PDB / ID: 8c54 | |||||||||||||||||||||
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Title | Cryo-EM structure of NADH bound SLA dehydrogenase RlGabD from Rhizobium leguminosarum bv. trifolii SRD1565 | |||||||||||||||||||||
![]() | Succinate semialdehyde dehydrogenase | |||||||||||||||||||||
![]() | OXIDOREDUCTASE / Sulfolactaldehyde dehydrogenase NADH GabD | |||||||||||||||||||||
Function / homology | 1,4-DIHYDRONICOTINAMIDE ADENINE DINUCLEOTIDE![]() | |||||||||||||||||||||
Biological species | ![]() | |||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.52 Å | |||||||||||||||||||||
![]() | Sharma, M. / Meek, R.W. / Armstrong, Z. / Blaza, J.N. / Alhifthi, A. / Li, J. / Goddard-Borger, E.D. / Williams, S.J. / Davies, G.J. | |||||||||||||||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Molecular basis of sulfolactate synthesis by sulfolactaldehyde dehydrogenase from . Authors: Jinling Li / Mahima Sharma / Richard Meek / Amani Alhifthi / Zachary Armstrong / Niccolay Madiedo Soler / Mihwa Lee / Ethan D Goddard-Borger / James N Blaza / Gideon J Davies / Spencer J Williams / ![]() ![]() ![]() Abstract: Sulfolactate (SL) is a short-chain organosulfonate that is an important reservoir of sulfur in the biosphere. SL is produced by oxidation of sulfolactaldehyde (SLA), which in turn derives from ...Sulfolactate (SL) is a short-chain organosulfonate that is an important reservoir of sulfur in the biosphere. SL is produced by oxidation of sulfolactaldehyde (SLA), which in turn derives from sulfoglycolysis of the sulfosugar sulfoquinovose, or through oxidation of 2,3-dihydroxypropanesulfonate. Oxidation of SLA is catalyzed by SLA dehydrogenases belonging to the aldehyde dehydrogenase superfamily. We report that SLA dehydrogenase GabD from the sulfoglycolytic bacterium SRDI565 can use both NAD and NADP as cofactor to oxidize SLA, and indicatively operates through a rapid equilibrium ordered mechanism. We report the cryo-EM structure of GabD bound to NADH, revealing a tetrameric quaternary structure and supporting proposal of organosulfonate binding residues in the active site, and a catalytic mechanism. Sequence based homology searches identified SLA dehydrogenase homologs in a range of putative sulfoglycolytic gene clusters in bacteria predominantly from the phyla Actinobacteria, Firmicutes, and Proteobacteria. This work provides a structural and biochemical view of SLA dehydrogenases to complement our knowledge of SLA reductases, and provide detailed insights into a critical step in the organosulfur cycle. | |||||||||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 436.2 KB | Display | ![]() |
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PDB format | ![]() | 283.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 16433MC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
#1: Protein | Mass: 52697.355 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Gene: EV132_10158 / Production host: ![]() ![]() #2: Chemical | ChemComp-NAI / #3: Water | ChemComp-HOH / | Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Tetrameric assembly of RlGabD / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT |
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Molecular weight | Value: 0.21 MDa / Experimental value: YES |
Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 / Details: 50mM Tris, 300mM NaCl, pH7.5 |
Specimen | Conc.: 1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: GOLD / Grid type: UltrAuFoil R1.2/1.3 |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 K |
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Electron microscopy imaging
Microscopy | Model: TFS GLACIOS |
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Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 240000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 700 nm / C2 aperture diameter: 30 µm |
Image recording | Electron dose: 50 e/Å2 / Film or detector model: FEI FALCON IV (4k x 4k) |
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Processing
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 437107 | ||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: D2 (2x2 fold dihedral) | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.52 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 75165 / Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 24.17 Å2 | ||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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