ISDA

Deposition Date 2005-07-15

Release Date 2006-06-27

Last Version Date 2025-03-26

Entry Detail

PDB ID:

2ABJ

Keywords:

TRANSFERASE

Title:

Crystal structure of human branched chain amino acid transaminase in a complex with an inhibitor, C16H10N2O4F3SCl, and pyridoxal 5' phosphate.

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.20 Å

R-Value Free:

0.25

R-Value Work:

0.20

R-Value Observed:

0.20

Space Group:

P 21 21 21

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Branched-chain-amino-acid aminotransferase, cytosolic
Gene (Uniprot):BCAT1
Chain IDs:A, B (auth: D), C (auth: G), D (auth: J)
Chain Length:366
Number of Molecules:4
Biological Source:Homo sapiens

UniProt ID:P54687 Pfam ID:PF01063 EC:2.6.1.42

Ligand Molecules

CBC

PLP

Primary Citation

The design and synthesis of human branched-chain amino acid aminotransferase inhibitors for treatment of neurodegenerative diseases.

Hu, L.Y, Boxer, P.A, Kesten, S.R, Lei, H.J, Wustrow, D.J, Moreland, D.W, Zhang, L, Ahn, K, Ryder, T.R, Liu, X, Rubin, J.R, Fahnoe, K, Carroll, R.T, Dutta, S, Fahnoe, D.C, Probert, A.W, Roof, R.L, Rafferty, M.F, Kostlan, C.R, Scholten, J.D, Hood, M, Ren, X.D, Schielke, G.P, Su, T.Z, Taylor, C.P, Mistry, A, McConnell, P, Hasemann, C, Ohren, J.Show

Bioorg.Med.Chem.Lett. 16 2337 2340 (2006)

PMID: 16143519 DOI: 10.1016/j.bmcl.2005.07.058

Abstact

The inhibition of the cytosolic isoenzyme BCAT that is expressed specifically in neuronal tissue is likely to be useful for the treatment of neurodegenerative and other neurological disorders where glutamatergic mechanisms are implicated. Compound 2 exhibited an IC50 of 0.8 microM in the hBCATc assays; it is an active and selective inhibitor. Inhibitor 2 also blocked calcium influx into neuronal cells following inhibition of glutamate uptake, and demonstrated neuroprotective efficacy in vivo. SAR, pharmacology, and the crystal structure of hBCATc with inhibitor 2 are described.

Legend

Protein

Chemical

Disease

Primary Citation of related structures