ISDA

Deposition Date 2012-11-19

Release Date 2013-10-30

Last Version Date 2023-09-20

Entry Detail

PDB ID:

4I0S

Keywords:

TRANSFERASE/TRANSFERASE INHIBITOR

Title:

Crystal structure of spleen tyrosine kinase complexed with 2-(6-Chloro-1-methyl-1H-indazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid isopropylamide

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Spodoptera frugiperda

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.98 Å

R-Value Free:

0.23

R-Value Work:

0.21

R-Value Observed:

0.21

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Tyrosine-protein kinase SYK
Gene (Uniprot):SYK
Chain IDs:A
Chain Length:291
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P43405 Pfam ID:PF07714 EC:2.7.10.2

Ligand Molecules

1B5

Primary Citation

Pyrrolopyrazines as selective spleen tyrosine kinase inhibitors.

Padilla, F, Bhagirath, N, Chen, S, Chiao, E, Goldstein, D.M, Hermann, J.C, Hsu, J, Kennedy-Smith, J.J, Kuglstatter, A, Liao, C, Liu, W, Lowrie, L.E, Luk, K.C, Lynch, S.M, Menke, J, Niu, L, Owens, T.D, O-Yang, C, Railkar, A, Schoenfeld, R.C, Slade, M, Steiner, S, Tan, Y.C, Villasenor, A.G, Wang, C, Wanner, J, Xie, W, Xu, D, Zhang, X, Zhou, M, Lucas, M.C.Show

J.Med.Chem. 56 1677 1692 (2013)

PMID: 23350847 DOI: 10.1021/jm301720p

Abstact

We describe the discovery of several pyrrolopyrazines as potent and selective Syk inhibitors and the efforts that eventually led to the desired improvements in physicochemical properties and human whole blood potencies. Ultimately, our mouse model revealed unexpected toxicity that precluded us from further advancing this series.

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