6L6Z

Cryo-EM structure of the Drosophila CTP synthase substrate-bound filament


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.09 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


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Literature

Drosophila CTP synthase can form distinct substrate- and product-bound filaments.

Zhou, X.Guo, C.J.Hu, H.H.Zhong, J.Sun, Q.Liu, D.Zhou, S.Chang, C.C.Liu, J.L.

(2019) J Genet Genomics 46: 537-545

  • DOI: 10.1016/j.jgg.2019.11.006
  • Primary Citation of Related Structures:  
    6L6Z, 6LFG

  • PubMed Abstract: 
  • Intracellular compartmentation is a key strategy for the functioning of a cell. In 2010, several studies revealed that the metabolic enzyme CTP synthase (CTPS) can form filamentous structures termed cytoophidia in prokaryotic and eukaryotic cells. However, recent structural studies showed that CTPS only forms inactive product-bound filaments in bacteria while forming active substrate-bound filaments in eukaryotic cells ...

    Intracellular compartmentation is a key strategy for the functioning of a cell. In 2010, several studies revealed that the metabolic enzyme CTP synthase (CTPS) can form filamentous structures termed cytoophidia in prokaryotic and eukaryotic cells. However, recent structural studies showed that CTPS only forms inactive product-bound filaments in bacteria while forming active substrate-bound filaments in eukaryotic cells. In this study, using negative staining and cryo-electron microscopy, we demonstrate that Drosophila CTPS, whether in substrate-bound or product-bound form, can form filaments. Our results challenge the previous model and indicate that substrate-bound and product-bound filaments can coexist in the same species. We speculate that the ability to switch between active and inactive cytoophidia in the same cells provides an additional layer of metabolic regulation.


    Organizational Affiliation

    School of Life Science and Technology, ShanghaiTech University, Shanghai, 201210, China. Electronic address: liujl3@shanghaitech.edu.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CTP synthaseB [auth A], C [auth B], D [auth C], A [auth D], F [auth E], G [auth F], H [auth G], E [auth H]562Drosophila melanogasterMutation(s): 0 
Gene Names: CTPsynCG45070
EC: 6.3.4.2
UniProt
Find proteins for Q9VUL1 (Drosophila melanogaster)
Explore Q9VUL1 
Go to UniProtKB:  Q9VUL1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 6.09 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina--

Revision History  (Full details and data files)

  • Version 1.0: 2020-03-18
    Type: Initial release