2CGH

crystal structure of biotin ligase from Mycobacterium tuberculosis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Active Site Conformational Changes Upon Reaction Intermediate Biotinyl-5'-AMP Binding in Biotin Protein Ligase from Mycobacterium Tuberculosis.

Ma, Q.Akhter, Y.Wilmanns, M.Ehebauer, M.T.

(2014) Protein Sci. 23: 932

  • DOI: 10.1002/pro.2475
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Protein biotinylation, a rare form of post-translational modification, is found in enzymes required for lipid biosynthesis. In mycobacteria, this process is essential for the formation of their complex and distinct cell wall and has become a focal po ...

    Protein biotinylation, a rare form of post-translational modification, is found in enzymes required for lipid biosynthesis. In mycobacteria, this process is essential for the formation of their complex and distinct cell wall and has become a focal point of drug discovery approaches. The enzyme responsible for this process, biotin protein ligase, substantially varies in different species in terms of overall structural organization, regulation of function and substrate specificity. To advance the understanding of the molecular mechanism of biotinylation in Mycobacterium tuberculosis we have biochemically and structurally characterized the corresponding enzyme. We report the high-resolution crystal structures of the apo-form and reaction intermediate biotinyl-5'-AMP-bound form of M. tuberculosis biotin protein ligase. Binding of the reaction intermediate leads to clear disorder-to-order transitions. We show that a conserved lysine, Lys138, in the active site is essential for biotinylation.


    Organizational Affiliation

    European Molecular Biology Laboratory, EMBL-Hamburg, c/o DESY, Building 25A, Notkestrasse 85, 22603, Hamburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BIOTIN LIGASE
A, B
268Mycobacterium tuberculosis (strain CDC 1551 / Oshkosh)Mutation(s): 0 
Gene Names: birA
EC: 6.3.4.15
Find proteins for P96884 (Mycobacterium tuberculosis (strain CDC 1551 / Oshkosh))
Go to UniProtKB:  P96884
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.185 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 62.099α = 90.00
b = 81.007β = 90.00
c = 101.881γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CaspRphasing
SCALEPACKdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2006-03-06 
  • Released Date: 2007-05-01 
  • Deposition Author(s): Ma, Q., Wilmanns, M.

Revision History 

  • Version 1.0: 2007-05-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2014-04-23
    Type: Database references, Derived calculations, Structure summary
  • Version 1.3: 2014-07-02
    Type: Database references
  • Version 1.4: 2017-07-12
    Type: Refinement description
  • Version 1.5: 2018-03-07
    Type: Source and taxonomy