ISDA

Entry Detail

PDB ID:

6YLL

Keywords:

TRANSFERASE

Title:

Biochemical, Cellular and Structural Characterization of Novel ERK3 Inhibitors

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2020-04-07

Release Date:

2020-09-23

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.89 Å

R-Value Free:

0.26

R-Value Work:

0.24

R-Value Observed:

0.24

Space Group:

P 43 21 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Mitogen-activated protein kinase 6
Mutations:L290V
Chain IDs:A, B
Chain Length:319
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q16659 Pfam ID:PF00069 EC:2.7.11.24

Ligand Molecules

OYB

Primary Citation

Biochemical, cellular and structural characterization of novel and selective ERK3 inhibitors.

Gradler, U, Busch, M, Leuthner, B, Raba, M, Burgdorf, L, Lehmann, M, Linde, N, Esdar, C.Show

Bioorg.Med.Chem.Lett. 30 127551 127551 (2020)

PMID: 32927028 DOI: 10.1016/j.bmcl.2020.127551

Abstact

Triazolo[4,5-d]pyrimidin-5-amines were identified from kinase selectivity screening as novel ERK3 inhibitors with sub-100 nanomolar potencies in a biochemical assay using MK5 as substrate and with an attractive kinase selectivity profile. ERK3 crystal structures clarified the inhibitor binding mode in the ATP pocket with impact on A-loop, GC-loop and αC-helix conformations suggesting a potential structural link towards MK5 interaction via the FHIEDE motif. The inhibitors also showed sub-100 nM potencies in a cellular ERK3 NanoBRET assay and with excellent correlation to the biochemical IC50s. This novel series provides valuable tool compounds to further investigate the biological function and activation mechanism of ERK3.

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Primary Citation of related structures