3NFW

Crystal structure of nitrilotriacetate monooxygenase component B (A0R521 homolog) from Mycobacterium thermoresistibile


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.217 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structure of nitrilotriacetate monooxygenase component B from Mycobacterium thermoresistibile.

Zhang, Y.Edwards, T.E.Begley, D.W.Abramov, A.Thompkins, K.B.Ferrell, M.Guo, W.J.Phan, I.Olsen, C.Napuli, A.Sankaran, B.Stacy, R.Van Voorhis, W.C.Stewart, L.J.Myler, P.J.

(2011) Acta Crystallogr.,Sect.F 67: 1100-1105

  • DOI: 10.1107/S1744309111012541

  • PubMed Abstract: 
  • Mycobacterium tuberculosis belongs to a large family of soil bacteria which can degrade a remarkably broad range of organic compounds and utilize them as carbon, nitrogen and energy sources. It has been proposed that a variety of mycobacteria can sub ...

    Mycobacterium tuberculosis belongs to a large family of soil bacteria which can degrade a remarkably broad range of organic compounds and utilize them as carbon, nitrogen and energy sources. It has been proposed that a variety of mycobacteria can subsist on alternative carbon sources during latency within an infected human host, with the help of enzymes such as nitrilotriacetate monooxygenase (NTA-Mo). NTA-Mo is a member of a class of enzymes which consist of two components: A and B. While component A has monooxygenase activity and is responsible for the oxidation of the substrate, component B consumes cofactor to generate reduced flavin mononucleotide, which is required for component A activity. NTA-MoB from M. thermoresistibile, a rare but infectious close relative of M. tuberculosis which can thrive at elevated temperatures, has been expressed, purified and crystallized. The 1.6 Å resolution crystal structure of component B of NTA-Mo presented here is one of the first crystal structures determined from the organism M. thermoresistibile. The NTA-MoB crystal structure reveals a homodimer with the characteristic split-barrel motif typical of flavin reductases. Surprisingly, NTA-MoB from M. thermoresistibile contains a C-terminal tail that is highly conserved among mycobacterial orthologs and resides in the active site of the other protomer. Based on the structure, the C-terminal tail may modulate NTA-MoB activity in mycobacteria by blocking the binding of flavins and NADH.


    Related Citations: 
    • Increasing the structural coverage of tuberculosis drug targets.
      Baugh, L.,Phan, I.,Begley, D.W.,Clifton, M.C.,Armour, B.,Dranow, D.M.,Taylor, B.M.,Muruthi, M.M.,Abendroth, J.,Fairman, J.W.,Fox, D.,Dieterich, S.H.,Staker, B.L.,Gardberg, A.S.,Choi, R.,Hewitt, S.N.,Napuli, A.J.,Myers, J.,Barrett, L.K.,Zhang, Y.,Ferrell, M.,Mundt, E.,Thompkins, K.,Tran, N.,Lyons-Abbott, S.,Abramov, A.,Sekar, A.,Serbzhinskiy, D.,Lorimer, D.,Buchko, G.W.,Stacy, R.,Stewart, L.J.,Edwards, T.E.,Van Voorhis, W.C.,Myler, P.J.
      (2015) Tuberculosis (Edinb) 95: 142


    Organizational Affiliation

    Seattle Structural Genomics Centre for Infectious Disease (SSGCID), USA. sunny.zhang@seattlebiomed.org




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Flavin reductase-like, FMN-binding protein
A, B, C, D
210Mycobacterium thermoresistibileMutation(s): 0 
EC: 1.14.13.-
Find proteins for E5Q9D7 (Mycobacterium thermoresistibile)
Go to UniProtKB:  E5Q9D7
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
D
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 48.450α = 90.00
b = 91.020β = 90.00
c = 165.640γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
XDSdata reduction
PDB_EXTRACTdata extraction
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-06-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2011-09-21
    Type: Database references
  • Version 1.3: 2012-12-19
    Type: Database references, Source and taxonomy, Structure summary
  • Version 1.4: 2015-04-22
    Type: Database references