4gih

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Tyk2 (JH1) in complex with 2,6-DICHLORO-N-{2-[(CYCLOPROPYLCARBONYL)AMINO]PYRIDIN-4-YL}BENZAMIDE

Structural highlights

4gih is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

TYK2_HUMAN Mendelian susceptibility to mycobacterial diseases;Autosomal recessive hyper IgE syndrome. Defects in TYK2 are the cause of protein-tyrosine kinase 2 deficiency (TYK2 deficiency) [MIM:611521; also known as autosomal recessive hyper-IgE syndrome (HIES) with atypical mycobacteriosis. TYK2 deficiency consists of a primary immunodeficiency characterized by recurrent skin abscesses, pneumonia, and highly elevated serum IgE.

Function

TYK2_HUMAN Probably involved in intracellular signal transduction by being involved in the initiation of type I IFN signaling. Phosphorylates the interferon-alpha/beta receptor alpha chain.^[1]

Publication Abstract from PubMed

A therapeutic rationale is proposed for the treatment of inflammatory diseases, such as psoriasis and inflammatory bowel diseases (IBD), by selective targeting of TYK2. Hit triage, following a high-throughput screen for TYK2 inhibitors, revealed pyridine 1 as a promising starting point for lead identification. Initial expansion of 3 separate regions of the molecule led to eventual identification of cyclopropyl amide 46, a potent lead analog with good kinase selectivity, physicochemical properties, and pharmacokinetic profile. Analysis of the binding modes of the series in TYK2 and JAK2 crystal structures revealed key interactions leading to good TYK2 potency and design options for future optimization of selectivity.

Lead identification of novel and selective TYK2 inhibitors.,Liang J, Tsui V, Van Abbema A, Bao L, Barrett K, Beresini M, Berezhkovskiy L, Blair WS, Chang C, Driscoll J, Eigenbrot C, Ghilardi N, Gibbons P, Halladay J, Johnson A, Kohli PB, Lai Y, Liimatta M, Mantik P, Menghrajani K, Murray J, Sambrone A, Xiao Y, Shia S, Shin Y, Smith J, Sohn S, Stanley M, Ultsch M, Zhang B, Wu LC, Magnuson S Eur J Med Chem. 2013 May 14;67C:175-187. doi: 10.1016/j.ejmech.2013.03.070. PMID:23867602^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Colamonici O, Yan H, Domanski P, Handa R, Smalley D, Mullersman J, Witte M, Krishnan K, Krolewski J. Direct binding to and tyrosine phosphorylation of the alpha subunit of the type I interferon receptor by p135tyk2 tyrosine kinase. Mol Cell Biol. 1994 Dec;14(12):8133-42. PMID:7526154
↑ Liang J, Tsui V, Van Abbema A, Bao L, Barrett K, Beresini M, Berezhkovskiy L, Blair WS, Chang C, Driscoll J, Eigenbrot C, Ghilardi N, Gibbons P, Halladay J, Johnson A, Kohli PB, Lai Y, Liimatta M, Mantik P, Menghrajani K, Murray J, Sambrone A, Xiao Y, Shia S, Shin Y, Smith J, Sohn S, Stanley M, Ultsch M, Zhang B, Wu LC, Magnuson S. Lead identification of novel and selective TYK2 inhibitors. Eur J Med Chem. 2013 May 14;67C:175-187. doi: 10.1016/j.ejmech.2013.03.070. PMID:23867602 doi:10.1016/j.ejmech.2013.03.070