8ZE2 | pdb_00008ze2

Drosophila melanogaster gustatory receptor 64a(Gr64a) in Sucrose-bound state

• PDB DOI: https://doi.org/10.2210/pdb8ZE2/pdb
• EM Map EMD-60021: EMDB EMDataResource

• Classification: PROTEIN TRANSPORT
• Organism(s): Drosophila melanogaster
• Expression System: Homo sapiens
• Mutation(s): No 
• Membrane Protein: Yes  PDBTM


• Deposited: 2024-05-04 Released: 2024-10-30 
• Deposition Author(s): Chen, Q.F., Chen, R.Z., Zhang, R.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.57 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structure basis for sugar specificity of gustatory receptors in insects.

Chen, R., Zhang, R., Li, L., Wang, B., Gao, Z., Liu, F., Chen, Y., Tian, Y., Li, B., Chen, Q.

(2024) Cell Discov 10: 83-83

• PubMed: 39103325 
• DOI: https://doi.org/10.1038/s41421-024-00716-6
• Primary Citation of Related Structures:  
  8ZDZ, 8ZE0, 8ZE2, 8ZE3

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Organizational Affiliation: 
• Center for Life Sciences, Yunnan Key Laboratory of Cell Metabolism and Diseases, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, School of Life Sciences, Yunnan University, Kunming, Yunnan, China.
Department of Anesthesiology, Zhongshan Hospital, Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China.
Academy of Medical Engineering and Translational Medicine (AMT) & Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin, China.
Academy of Medical Engineering and Translational Medicine (AMT) & Tianjin Key Laboratory of Brain Science and Neural Engineering, Tianjin University, Tianjin, China. [e-mail].
Department of Anesthesiology, Zhongshan Hospital, Institute for Translational Brain Research, State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China. [e-mail].
Center for Life Sciences, Yunnan Key Laboratory of Cell Metabolism and Diseases, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, School of Life Sciences, Yunnan University, Kunming, Yunnan, China. [e-mail].

Biological Assembly 1  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 219.63 kDa 
• Atom Count: 12,972 
• Modeled Residue Count: 1,568 
• Deposited Residue Count: 1,888 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Gustatory receptor for sugar taste 64a	A, B, C, D	472	Drosophila melanogaster	Mutation(s): 0  Gene Names: Gr64a, CG32261 Membrane Entity: Yes
UniProt
Find proteins for P83293 (Drosophila melanogaster) Explore P83293  Go to UniProtKB:  P83293

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-glucopyranose-(1-2)-alpha-D-fructofuranose	E, F, G, H	2		N/A
Glycosylation Resources
GlyTouCan:  G49187ZK GlyCosmos:  G49187ZK

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900032	E, F, G, H	surcrose isoform	Oligosaccharide / Substrate analog

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.57 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-10-30 
Deposition Author(s): Chen, Q.F., Chen, R.Z., Zhang, R.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	32071202
National Natural Science Foundation of China (NSFC)	China	32371261

Revision History  

• Version 1.0: 2024-10-30
  Type: Initial release
  
• Version 1.1: 2024-11-06
  Changes: Data collection, Database references
• Version 1.2: 2025-07-23
  Changes: Data collection