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- PDB-9uu3: Cryo-EM structure of the maize CER6-GL2 complex bound with CoA -

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Basic information

Entry
Database: PDB / ID: 9uu3
TitleCryo-EM structure of the maize CER6-GL2 complex bound with CoA
Components
  • 3-ketoacyl-CoA synthase
  • Protein ECERIFERUM 26-like
KeywordsPLANT PROTEIN / Complex / CoA
Function / homology
Function and homology information


acyltransferase activity, transferring groups other than amino-acyl groups / Transferases; Acyltransferases; Transferring groups other than aminoacyl groups / fatty acid biosynthetic process / membrane
Similarity search - Function
Very-long-chain 3-ketoacyl-CoA synthase / FAE1/Type III polyketide synthase-like protein / FAE1/Type III polyketide synthase-like protein / : / Transferase family / 3-Oxoacyl-[acyl-carrier-protein (ACP)] synthase III, C-terminal / 3-Oxoacyl-[acyl-carrier-protein (ACP)] synthase III C terminal / Chloramphenicol acetyltransferase-like domain superfamily / Thiolase-like
Similarity search - Domain/homology
COENZYME A / Protein ECERIFERUM 26-like / 3-ketoacyl-CoA synthase
Similarity search - Component
Biological speciesZea mays (maize)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.01 Å
AuthorsLiu, Y. / Zhang, P.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32230050 China
CitationJournal: To Be Published
Title: Molecular basis of very-long-chain fatty acid elongation by the CER6-GL2 enzyme complex in plant wax biosynthesis
Authors: Liu, Y. / Zhang, P.
History
DepositionMay 5, 2025Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Oct 29, 2025Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Oct 29, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Protein ECERIFERUM 26-like
C: 3-ketoacyl-CoA synthase
D: Protein ECERIFERUM 26-like
B: 3-ketoacyl-CoA synthase
hetero molecules


Theoretical massNumber of molelcules
Total (without water)208,0926
Polymers206,5574
Non-polymers1,5352
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Protein ECERIFERUM 26-like / GL2


Mass: 46864.980 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Zea mays (maize) / Gene: LOC103645956 / Production host: Spodoptera frugiperda (fall armyworm) / References: UniProt: A0A804MAL4
#2: Protein 3-ketoacyl-CoA synthase / CER6


Mass: 56413.438 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Zea mays (maize) / Gene: LOC100191595, ZEAMMB73_Zm00001d028241 / Production host: Spodoptera frugiperda (fall armyworm)
References: UniProt: B4G0N2, Transferases; Acyltransferases; Transferring groups other than aminoacyl groups
#3: Chemical ChemComp-COA / COENZYME A


Mass: 767.534 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: C21H36N7O16P3S / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationN

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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: Cryo-EM structure of the maize CER6-GL2 complex bound with CoA
Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Zea mays (maize)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
SpecimenConc.: 10 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: TFS FALCON 4i (4k x 4k)

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Processing

EM softwareName: PHENIX / Version: 1.14_3260: / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.01 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 47973 / Symmetry type: POINT

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