5BWW

X-RAY CRYSTAL STRUCTURE AT 1.82A RESOLUTION OF HUMAN MITOCHONDRIAL BRANCHED CHAIN AMINOTRANSFERASE (BCATM) COMPLEXED WITH A PYRROLIDINE AMIDE COMPOUND AND AN INTERNAL ALDIMINE LINKED PLP COFACTOR.

PDB DOI: https://doi.org/10.2210/pdb5BWW/pdb

Classification: TRANSFERASE
Organism(s): Homo sapiens
Expression System: Escherichia coli
Mutation(s): No

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

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.82 Å
R-Value Free: 0.261
R-Value Work: 0.220
R-Value Observed: 0.222

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

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

PubMed: 26090771 Search on PubMed
DOI: https://doi.org/10.1021/acs.jmedchem.5b00313
Primary Citation of Related Structures:
5BWR, 5BWT, 5BWU, 5BWV, 5BWW, 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-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.

Macromolecule Content

Total Structure Weight: 85.77 kDa
Atom Count: 6,572
Modelled Residue Count: 706
Deposited Residue Count: 738
Unique protein chains: 1

Macromolecules

Find similar proteins by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Branched-chain-amino-acid aminotransferase, mitochondrial	A, B	369	Homo sapiens	Mutation(s): 0 Gene Names: BCAT2, BCATM, BCT2, ECA40 EC: 2.6.1.42
UniProt & NIH Common Fund Data Resources
Find proteins for O15382 (Homo sapiens) Explore O15382 Go to UniProtKB: O15382
PHAROS: O15382 GTEx: ENSG00000105552
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	O15382
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
4W6 Query on 4W6 Download Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain O [auth B] MOL2 format, chain D [auth A] MOL2 format, chain O [auth B] mmCIF format, chain D [auth A] mmCIF format, chain O [auth B]	D [auth A], O [auth B]	7-oxo-2-[2-oxo-2-(pyrrolidin-1-yl)ethyl]-5-propyl-4,7-dihydropyrazolo[1,5-a]pyrimidine-3-carbonitrile C₁₆ H₁₉ N₅ O₂ IBJDXQJWRXJZBH-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Focus chain O [auth B] Interactions & Density Focus chain D [auth A] Focus chain O [auth B]
PLP Query on PLP Download Ideal Coordinates CCD File SDF format, chain C [auth A] SDF format, chain N [auth B] MOL2 format, chain C [auth A] MOL2 format, chain N [auth B] mmCIF format, chain C [auth A] mmCIF format, chain N [auth B]	C [auth A], N [auth B]	PYRIDOXAL-5'-PHOSPHATE C₈ H₁₀ N O₆ P NGVDGCNFYWLIFO-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Focus chain N [auth B] Interactions & Density Focus chain C [auth A] Focus chain N [auth B]
GOL Query on GOL Download Ideal Coordinates CCD File SDF format, chain M [auth A] SDF format, chain Y [auth B] MOL2 format, chain M [auth A] MOL2 format, chain Y [auth B] mmCIF format, chain M [auth A] mmCIF format, chain Y [auth B]	M [auth A], Y [auth B]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain M [auth A] Focus chain Y [auth B] Interactions & Density Focus chain M [auth A] Focus chain Y [auth B]
DMS Query on DMS Download Ideal Coordinates CCD File SDF format, chain P [auth B] MOL2 format, chain P [auth B] mmCIF format, chain P [auth B]	P [auth B]	DIMETHYL SULFOXIDE C₂ H₆ O S IAZDPXIOMUYVGZ-UHFFFAOYSA-N		Interactions Focus chain P [auth B] Interactions & Density Focus chain P [auth B]
EDO Query on EDO Download Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain G [auth A] SDF format, chain H [auth A] SDF format, chain I [auth A] SDF format, chain J [auth A] SDF format, chain K [auth A] SDF format, chain Q [auth B] SDF format, chain R [auth B] SDF format, chain S [auth B] SDF format, chain T [auth B] SDF format, chain U [auth B] SDF format, chain V [auth B] SDF format, chain W [auth B] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain G [auth A] MOL2 format, chain H [auth A] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A] MOL2 format, chain Q [auth B] MOL2 format, chain R [auth B] MOL2 format, chain S [auth B] MOL2 format, chain T [auth B] MOL2 format, chain U [auth B] MOL2 format, chain V [auth B] MOL2 format, chain W [auth B] mmCIF format, chain E [auth A] mmCIF format, chain F [auth A] mmCIF format, chain G [auth A] mmCIF format, chain H [auth A] mmCIF format, chain I [auth A] mmCIF format, chain J [auth A] mmCIF format, chain K [auth A] mmCIF format, chain Q [auth B] mmCIF format, chain R [auth B] mmCIF format, chain S [auth B] mmCIF format, chain T [auth B] mmCIF format, chain U [auth B] mmCIF format, chain V [auth B] mmCIF format, chain W [auth B]	E [auth A] F [auth A] G [auth A] H [auth A] I [auth A] E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], Q [auth B], R [auth B], S [auth B], T [auth B], U [auth B], V [auth B], W [auth B]	1,2-ETHANEDIOL C₂ H₆ O₂ LYCAIKOWRPUZTN-UHFFFAOYSA-N		Interactions Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain Q [auth B] Focus chain R [auth B] Focus chain S [auth B] Focus chain T [auth B] Focus chain U [auth B] Focus chain V [auth B] Focus chain W [auth B] Interactions & Density Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain Q [auth B] Focus chain R [auth B] Focus chain S [auth B] Focus chain T [auth B] Focus chain U [auth B] Focus chain V [auth B] Focus chain W [auth B]
CL Query on CL Download Ideal Coordinates CCD File SDF format, chain L [auth A] SDF format, chain X [auth B] MOL2 format, chain L [auth A] MOL2 format, chain X [auth B] mmCIF format, chain L [auth A] mmCIF format, chain X [auth B]	L [auth A], X [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M		Interactions Focus chain L [auth A] Focus chain X [auth B] Interactions & Density Focus chain L [auth A] Focus chain X [auth B]