Chitin Synthase 2 from Candida albicans at the apo state

Experimental Data Snapshot

  • Resolution: 2.95 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Structural basis for inhibition and regulation of a chitin synthase from Candida albicans.

Ren, Z.Chhetri, A.Guan, Z.Suo, Y.Yokoyama, K.Lee, S.Y.

(2022) Nat Struct Mol Biol 29: 653-664

  • DOI: https://doi.org/10.1038/s41594-022-00791-x
  • Primary Citation of Related Structures:  
    7STL, 7STM, 7STN, 7STO

  • PubMed Abstract: 

    Chitin is an essential component of the fungal cell wall. Chitin synthases (Chss) catalyze chitin formation and translocation across the membrane and are targets of antifungal agents, including nikkomycin Z and polyoxin D. Lack of structural insights into the action of these inhibitors on Chs has hampered their further development to the clinic. We present the cryo-EM structures of Chs2 from Candida albicans (CaChs2) in the apo, substrate-bound, nikkomycin Z-bound, and polyoxin D-bound states. CaChs2 adopts a unique domain-swapped dimer configuration where a conserved motif in the domain-swapped region controls enzyme activity. CaChs2 has a dual regulation mechanism where the chitin translocation tunnel is closed by the extracellular gate and plugged by a lipid molecule in the apo state to prevent non-specific leak. Analyses of substrate and inhibitor binding provide insights into the chemical logic of Chs inhibition, which can guide Chs-targeted antifungal development.

  • Organizational Affiliation

    Department of Biochemistry, Duke University School of Medicine, Durham, NC, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Chitin synthase
A, B
1,039Candida albicansMutation(s): 0 
Gene Names: CHS2CAALFM_CR09020CAorf19.7298
Membrane Entity: Yes 
Find proteins for P30572 (Candida albicans)
Explore P30572 
Go to UniProtKB:  P30572
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP30572
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.95 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01GM115729

Revision History  (Full details and data files)

  • Version 1.0: 2022-07-13
    Type: Initial release
  • Version 1.1: 2022-07-27
    Changes: Database references
  • Version 1.2: 2024-06-05
    Changes: Data collection