9UU4 | pdb_00009uu4

Cryo-EM structure of the maize CER6-GL2 complex (inactive C222A mutant) bound with malonyl-CoA

• PDB DOI: https://doi.org/10.2210/pdb9UU4/pdb
• EM Map EMD-64505: EMDB EMDataResource

• Classification: PLANT PROTEIN
• Organism(s): Zea mays
• Expression System: Spodoptera frugiperda
• Mutation(s): Yes 


• Deposited: 2025-05-05 Released: 2025-10-29 
• Deposition Author(s): Liu, Y., Zhang, P.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.96 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Molecular basis of very-long-chain fatty acid elongation by the CER6-GL2 enzyme complex in plant wax biosynthesis

Liu, Y., Zhang, P.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 208.2 kDa 
• Atom Count: 13,094 
• Modeled Residue Count: 1,676 
• Deposited Residue Count: 1,868 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein ECERIFERUM 26-like	A, B [auth D]	434	Zea mays	Mutation(s): 0  Gene Names: LOC103645956
UniProt
Find proteins for A0A804MAL4 (Zea mays) Explore A0A804MAL4  Go to UniProtKB:  A0A804MAL4

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
3-ketoacyl-CoA synthase	C, D [auth B]	500	Zea mays	Mutation(s): 1  Gene Names: LOC100191595, ZEAMMB73_Zm00001d028241 EC: 2.3.1
UniProt
Find proteins for B4G0N2 (Zea mays) Explore B4G0N2  Go to UniProtKB:  B4G0N2

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MLC (Subject of Investigation/LOI)	E [auth C], F [auth B]	MALONYL-COENZYME A C24 H38 N7 O19 P3 S LTYOQGRJFJAKNA-DVVLENMVSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.96 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.14_3260:

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-10-29 
Deposition Author(s): Liu, Y., Zhang, P.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	32230050

Revision History  

• Version 1.0: 2025-10-29
  Type: Initial release