Crystal structure of Legionella pneumophila dephospho-CoA kinase in complex with ATP

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.192 

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Crystal structure of Legionella pneumophila dephospho-CoA kinase reveals a non-canonical conformation of P-loop.

Gong, X.Chen, X.Yu, D.Zhang, N.Zhu, Z.Niu, L.Mao, Y.Ge, H.

(2014) J Struct Biol 188: 233-239

  • DOI: https://doi.org/10.1016/j.jsb.2014.10.008
  • Primary Citation of Related Structures:  
    4TTP, 4TTQ, 4TTR

  • PubMed Abstract: 

    Dephospho-CoA kinase (DPCK; EC catalyzes the final step in the coenzyme A biosynthetic pathway. DPCK transfers a phosphate group from ATP to the 3-hydroxyl group of the ribose of dephosphocoenzyme A (dCoA) to yield CoA and ADP. Upon the binding of ligands, large conformational changes is induced in DPCKs, as well as in many other kinases, to shield the bound ATP in their catalytic site from the futile hydrolysis by bulk water molecules. To investigate the molecular mechanisms underlying the phosphoryl transfer during DPCK catalytic cycle, we determined the crystal structures of the Legionellapneumophila DPCK (LpDPCK) both in its apo-form and in complex with ATP. The structures reveal that LpDPCK comprises of three domains, the classical core domain, the CoA domain, and the LID domain, which are packed together to create a central cavity for substrate-binding and enzymatic catalysis. The binding of ATP induces large conformational changes, including a hinge-bending motion of the CoA binding domain and the "helix to loop" conformational change of the P-loop. Finally, modeling of a dCoA molecule to the enzyme provides insights into the catalytic mechanism of DPCK.

  • Organizational Affiliation

    Institute of Health Sciences and School of Life Sciences, Anhui University, Hefei, Anhui 230601, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dephospho-CoA kinase215Legionella pneumophila subsp. pneumophila str. Philadelphia 1Mutation(s): 0 
Gene Names: coaElpg1467
Find proteins for Q5ZVH3 (Legionella pneumophila subsp. pneumophila (strain Philadelphia 1 / ATCC 33152 / DSM 7513))
Explore Q5ZVH3 
Go to UniProtKB:  Q5ZVH3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5ZVH3
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.251 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.192 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.369α = 90
b = 36.21β = 90
c = 82.092γ = 90
Software Package:
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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China31270770

Revision History  (Full details and data files)

  • Version 1.0: 2014-12-10
    Type: Initial release
  • Version 1.1: 2014-12-24
    Changes: Database references
  • Version 1.2: 2015-10-07
    Changes: Experimental preparation
  • Version 1.3: 2020-01-08
    Changes: Advisory, Author supporting evidence, Derived calculations
  • Version 1.4: 2023-09-27
    Changes: Advisory, Data collection, Database references, Refinement description