ISDA

Deposition Date 2016-12-21

Release Date 2017-02-08

Last Version Date 2024-03-06

Entry Detail

PDB ID:

5UBT

Keywords:

TRANSFERASE/TRANSFERASE REGULATOR

Title:

CRYSTAL STRUCTURE OF PI3K DELTA IN COMPLEX WITH A 7-(3-(PIPERAZIN-1-YL)PHENYL)PYRROLO[2,1-F][1,2,4] TRIAZIN-4-AMINE DERIVIATINE

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

unidentified baculovirus

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.83 Å

R-Value Free:

0.26

R-Value Work:

0.21

R-Value Observed:

0.21

Space Group:

P 21 21 21

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform
Gene (Uniprot):PIK3CD
Chain IDs:A
Chain Length:1013
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:O00329 Pfam ID:PF02192, PF00794, PF00792, PF00613, PF00454 EC:2.7.1.137

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Phosphatidylinositol 3-kinase regulatory subunit alpha
Gene (Uniprot):PIK3R1
Chain IDs:B
Chain Length:168
Number of Molecules:1
Biological Source:Homo sapiens

UniProt ID:P27986 Pfam ID:PF16454 EC:2.7.1.153

Ligand Molecules

85S

Primary Citation

Discovery of 7-(3-(piperazin-1-yl)phenyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine derivatives as highly potent and selective PI3K delta inhibitors.

Qin, L.Y, Ruan, Z, Cherney, R.J, Dhar, T.G, Neels, J, Weigelt, C.A, Sack, J.S, Srivastava, A.S, Cornelius, L.A, Tino, J.A, Stefanski, K, Gu, X, Xie, J, Susulic, V, Yang, X, Yarde-Chinn, M, Skala, S, Bosnius, R, Goldstein, C, Davies, P, Ruepp, S, Salter-Cid, L, Bhide, R.S, Poss, M.A.Show

Bioorg. Med. Chem. Lett. 27 855 861 (2017)

PMID: 28108251 DOI: 10.1016/j.bmcl.2017.01.016

Abstact

As demonstrated in preclinical animal models, the disruption of PI3Kδ expression or its activity leads to a decrease in inflammatory and immune responses. Therefore, inhibition of PI3Kδ may provide an alternative treatment for autoimmune diseases, such as RA, SLE, and respiratory ailments. Herein, we disclose the identification of 7-(3-(piperazin-1-yl)phenyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine derivatives as highly potent, selective and orally bioavailable PI3Kδ inhibitors. The lead compound demonstrated efficacy in an in vivo mouse KLH model.

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Primary Citation of related structures