Structural insights into putative molybdenum cofactor biosynthesis protein C (MoaC2) from Mycobacterium tuberculosis H37Rv

Experimental Data Snapshot

  • Resolution: 2.20 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 

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Structural Insights into Putative Molybdenum Cofactor Biosynthesis Protein C (MoaC2) from Mycobacterium tuberculosis H37Rv.

Srivastava, V.K.Srivastava, S.Arora, A.Pratap, J.V.

(2013) PLoS One 8: e58333-e58333

  • DOI: https://doi.org/10.1371/journal.pone.0058333
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The Molybdenum cofactor (Moco) biosynthesis pathway is an evolutionary conserved pathway seen in almost all eukaryotes including the pathogenic species Mycobacterium tuberculosis. This pathway comprises of several novel reactions which include the initial formation of precursor Z from guanosine triphosphate (GTP), catalysed by two enzymes MoaA and MoaC. Although Moco biosynthesis is well understood, the first step is still not clear. In M. tuberculosis H37Rv, three orthologous genes of MoaC have been annotated: moaC1 (Rv3111), moaC2 (Rv0864) and moaC3 (Rv3324c). Rv0864 (MoaC2) is a 17.5 kDa protein and is reported to be down-regulated by ∼3 times in the nutrient starvation model for Mycobacterium tuberculosis. The crystal structure of Moco-biosynthesis protein MoaC2 from Mycobacterium tuberculosis (2.20 Å resolution, space group P213) has been determined. Based on a comparative analysis of structures of homologous proteins, conserved residues were identified and are implicated in structural and functional roles. Molecular docking studies with probable ligands carried out in order to identify its ligand, suggests that pteridinebenzomonophosphate as the most likely ligand. Sequence based interaction study identified MoaA1 to interact with MoaC2. A homology model of MoaA1 was then complexed with MoaC2 and protein-protein interactions are also discussed.

  • Organizational Affiliation

    Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Mahatma Gandhi Marg, Lucknow, India.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Molybdenum cofactor biosynthesis protein C 2
A, B
175Mycobacterium tuberculosisMutation(s): 0 
Gene Names: M. tuberculosismoaC2MT0887MTV043.57Rv0864
Find proteins for P9WJR7 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WJR7 
Go to UniProtKB:  P9WJR7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WJR7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.20 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 91.9α = 90
b = 91.9β = 90
c = 91.9γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-04-10
    Type: Initial release
  • Version 1.1: 2017-11-15
    Changes: Refinement description
  • Version 1.2: 2023-09-13
    Changes: Data collection, Database references, Refinement description