5VRL

CRYSTAL STRUCTURE OF THE INHA FROM MYCOBACTERIUM TUBERCULOSIS IN COMPLEX WITH AN12855, EBSI 4333.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.173 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Discovery of a cofactor-independent inhibitor ofMycobacterium tuberculosisInhA.

Xia, Y.Zhou, Y.Carter, D.S.McNeil, M.B.Choi, W.Halladay, J.Berry, P.W.Mao, W.Hernandez, V.O'Malley, T.Korkegian, A.Sunde, B.Flint, L.Woolhiser, L.K.Scherman, M.S.Gruppo, V.Hastings, C.Robertson, G.T.Ioerger, T.R.Sacchettini, J.Tonge, P.J.Lenaerts, A.J.Parish, T.Alley, M.

(2018) Life Sci Alliance 1: e201800025-e201800025

  • DOI: 10.26508/lsa.201800025
  • Primary Citation of Related Structures:  
    5VRL, 5VRN, 5VRM

  • PubMed Abstract: 
  • New antitubercular agents are needed to combat the spread of multidrug- and extensively drug-resistant strains of Mycobacterium tuberculosis . The frontline antitubercular drug isoniazid (INH) targets the mycobacterial enoyl-ACP reductase, InhA. Resistance to INH is predominantly through mutations affecting the prodrug-activating enzyme KatG ...

    New antitubercular agents are needed to combat the spread of multidrug- and extensively drug-resistant strains of Mycobacterium tuberculosis . The frontline antitubercular drug isoniazid (INH) targets the mycobacterial enoyl-ACP reductase, InhA. Resistance to INH is predominantly through mutations affecting the prodrug-activating enzyme KatG. Here, we report the identification of the diazaborines as a new class of direct InhA inhibitors. The lead compound, AN12855, exhibited in vitro bactericidal activity against replicating bacteria and was active against several drug-resistant clinical isolates. Biophysical and structural investigations revealed that AN12855 binds to and inhibits the substrate-binding site of InhA in a cofactor-independent manner. AN12855 showed good drug exposure after i.v. and oral delivery, with 53% oral bioavailability. Delivered orally, AN12855 exhibited dose-dependent efficacy in both an acute and chronic murine model of tuberculosis infection that was comparable with INH. Combined, AN12855 is a promising candidate for the development of new antitubercular agents.


    Organizational Affiliation

    Anacor Pharmaceuticals, Palo Alto, CA, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Enoyl-[acyl-carrier-protein] reductase [NADH]A272Mycobacterium tuberculosis CDC1551Mutation(s): 0 
Gene Names: inhAMT1531
EC: 1.3.1.9
UniProt
Find proteins for P9WGR0 (Mycobacterium tuberculosis (strain CDC 1551 / Oshkosh))
Explore P9WGR0 
Go to UniProtKB:  P9WGR0
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
9JA (Subject of Investigation/LOI)
Query on 9JA

Download Ideal Coordinates CCD File 
B [auth A](~{N}~{E})-~{N}-[[2-[[2-ethylsulfonyl-1,1-bis(oxidanyl)-3,4-dihydro-2,3,1$l^{4}-benzodiazaborinin-7-yl]oxy]-5-(trifluoromethyl)phenyl]methylidene]hydroxylamine
C17 H18 B F3 N3 O6 S
MTDIXAKABVYTBV-AUEPDCJTSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.173 
  • Space Group: I 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 94.08α = 90
b = 94.08β = 90
c = 184.43γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Bill & Melinda Gates FoundationUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2018-05-16
    Type: Initial release
  • Version 1.1: 2018-11-21
    Changes: Data collection, Database references
  • Version 1.2: 2018-12-05
    Changes: Data collection, Database references