5IE9

Crystal structure of the Bacillus-conserved MazG protein, a nucleotide pyrophosphohydrolase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.223 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Crystal structure of the Bacillus-conserved MazG protein, a nucleotide pyrophosphohydrolase.

Kim, M.I.Hong, M.

(2016) Biochem Biophys Res Commun 472: 237-242

  • DOI: https://doi.org/10.1016/j.bbrc.2016.02.097
  • Primary Citation of Related Structures:  
    5IE9

  • PubMed Abstract: 

    BA1544 from Bacillus anthracis was previously annotated as a transcription factor for the gene cluster ba1554 - ba1558, but has not been experimentally characterized. B. anthracis is an obligate pathogen causing fatal inhalational anthrax, and BA1544 is absolutely conserved in Bacillus species, including Bacillus cereus, Bacillus thuringiensis and Bacillus mycoides, with 100% sequence identity. To address the function of BA1544, we performed structural and biochemical studies, which revealed that BA1544 is a MazG protein. Thus, herein, the protein is defined as Bacillus-conserved MazG (BcMazG). Like other MazG structures, BcMazG assembles into a tetrameric architecture. Each monomer adopts a four-α-helix bundle that accommodates a metal ion using four acidic residues, and presents one putative substrate-binding site. Enzymatic characterization demonstrated that BcMazG is a nucleoside triphosphate (NTP) pyrophosphohydrolase and prefers adenosine triphosphate as a substrate among canonical NTPs. Moreover, structural comparison of BcMazG with its homologues revealed a potential regulation mechanism whereby the enzymatic activity of BcMazG is regulated by its C-terminal region.


  • Organizational Affiliation

    Division of Biological Science and Technology, Yonsei University, Wonju 220-710, Republic of Korea.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nucleotide pyrophosphohydrolase
A, B, C, D
103Bacillus cereusMutation(s): 0 
Gene Names: TQ94_28555
UniProt
Find proteins for Q813T0 (Bacillus cereus (strain ATCC 14579 / DSM 31 / CCUG 7414 / JCM 2152 / NBRC 15305 / NCIMB 9373 / NCTC 2599 / NRRL B-3711))
Explore Q813T0 
Go to UniProtKB:  Q813T0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ813T0
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.223 
  • Space Group: P 32
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.578α = 90
b = 90.578β = 90
c = 97.056γ = 120
Software Package:
Software NamePurpose
SCALAdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
MOSFLMdata reduction
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
The ministry of Science, ICT & Future planningKorea, Republic Of2013R1A1A1008707

Revision History  (Full details and data files)

  • Version 1.0: 2016-03-30
    Type: Initial release
  • Version 1.1: 2017-08-30
    Changes: Data collection, Database references, Derived calculations
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Refinement description