5BWT

X-RAY CRYSTAL STRUCTURE AT 2.20A RESOLUTION OF HUMAN MITOCHONDRIAL BRANCHED CHAIN AMINOTRANSFERASE (BCATM) COMPLEXED WITH A PYRAZOLOPYRIMIDINONE FRAGMENT AND AN INTERNAL ALDIMINE LINKED PLP.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.178 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Discovery of in Vivo Active Mitochondrial Branched-Chain Aminotransferase (BCATm) Inhibitors by Hybridizing Fragment and HTS Hits.

Bertrand, S.M.Ancellin, N.Beaufils, B.Bingham, R.P.Borthwick, J.A.Boullay, A.B.Boursier, E.Carter, P.S.Chung, C.W.Churcher, I.Dodic, N.Fouchet, M.H.Fournier, C.Francis, P.L.Gummer, L.A.Herry, K.Hobbs, A.Hobbs, C.I.Homes, P.Jamieson, C.Nicodeme, E.Pickett, S.D.Reid, I.H.Simpson, G.L.Sloan, L.A.Smith, S.E.Somers, D.O.Spitzfaden, C.Suckling, C.J.Valko, K.Washio, Y.Young, R.J.

(2015) J Med Chem 58: 7140-7163

  • DOI: 10.1021/acs.jmedchem.5b00313
  • Primary Citation of Related Structures:  
    5BWR, 5BWU, 5BWT, 5BWW, 5BWV, 5BWX

  • PubMed Abstract: 
  • The hybridization of hits, identified by complementary fragment and high throughput screens, enabled the discovery of the first series of potent inhibitors of mitochondrial branched-chain aminotransferase (BCATm) based on a 2-benzylamino-pyrazolo[1,5 ...

    The hybridization of hits, identified by complementary fragment and high throughput screens, enabled the discovery of the first series of potent inhibitors of mitochondrial branched-chain aminotransferase (BCATm) based on a 2-benzylamino-pyrazolo[1,5-a]pyrimidinone-3-carbonitrile template. Structure-guided growth enabled rapid optimization of potency with maintenance of ligand efficiency, while the focus on physicochemical properties delivered compounds with excellent pharmacokinetic exposure that enabled a proof of concept experiment in mice. Oral administration of 2-((4-chloro-2,6-difluorobenzyl)amino)-7-oxo-5-propyl-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carbonitrile 61 significantly raised the circulating levels of the branched-chain amino acids leucine, isoleucine, and valine in this acute study.


    Organizational Affiliation

    GlaxoSmithKline R&D, Medicines Research Centre , Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Branched-chain-amino-acid aminotransferase, mitochondrialAB369Homo sapiensMutation(s): 0 
Gene Names: BCAT2BCATMBCT2ECA40
EC: 2.6.1.42
Find proteins for O15382 (Homo sapiens)
Explore O15382 
Go to UniProtKB:  O15382
NIH Common Fund Data Resources
PHAROS  O15382
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PLP
Query on PLP

Download CCD File 
A, B
PYRIDOXAL-5'-PHOSPHATE
C8 H10 N O6 P
NGVDGCNFYWLIFO-UHFFFAOYSA-N
 Ligand Interaction
4VS
Query on 4VS

Download CCD File 
A, B
5-ethyl-2-methyl-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carbonitrile
C10 H10 N4 O
BEASIHRTQREINR-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download CCD File 
A, B
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
4VSIC50:  630957   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.178 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.307α = 90
b = 106.628β = 90
c = 108.049γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction
Cootmodel building

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2015-06-08 
  • Released Date: 2015-07-01 
  • Deposition Author(s): Somers, D.O.

Revision History 

  • Version 1.0: 2015-07-01
    Type: Initial release
  • Version 1.1: 2015-10-07
    Changes: Database references
  • Version 1.2: 2019-06-12
    Changes: Data collection, Structure summary