Abstract：
:The receptor tyrosine kinase EPHA2 (Ephrin type-A receptor 2) plays important roles in oncogenesis, metastasis, and treatment resistance, yet therapeutic targeting, drug discovery, or investigation of EPHA2 biology is hampered by the lack of appropriate inhibitors and structural information. Here, we used chemical proteomics to survey 235 clinical kinase inhibitors for their kinase selectivity and identified 24 drugs with submicromolar affinities for EPHA2. NMR-based conformational dynamics together with nine new cocrystal structures delineated drug-EPHA2 interactions in full detail. The combination of selectivity profiling, structure determination, and kinome wide sequence alignment allowed the development of a classification system in which amino acids in the drug binding site of EPHA2 are categorized into key, scaffold, potency, and selectivity residues. This scheme should be generally applicable in kinase drug discovery, and we anticipate that the provided information will greatly facilitate the development of selective EPHA2 inhibitors in particular and the repurposing of clinical kinase inhibitors in general.
journal_name
ACS Chem Bioljournal_title
ACS chemical biologyauthors
Heinzlmeir S,Kudlinzki D,Sreeramulu S,Klaeger S,Gande SL,Linhard V,Wilhelm M,Qiao H,Helm D,Ruprecht B,Saxena K,Médard G,Schwalbe H,Kuster Bdoi
10.1021/acschembio.6b00709subject
Has Abstractpub_date
2016-12-16 00:00:00pages
3400-3411issue
12eissn
1554-8929issn
1554-8937journal_volume
11pub_type
杂志文章abstract：:Conotoxins are small disulfide-rich peptides from the venom of cone snails. Along with other conopeptides, they target a wide range of membrane receptors, ion channels, and transporters, and because of their high potency and selectivity for defined subtypes of these receptors, they have attracted a great deal of atten...
journal_title：ACS chemical biology
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abstract：:ABCG2 is a membrane-localized, human transporter protein that has been demonstrated to reduce the intracellular accumulation of substrates through ATP-dependent efflux. Highly expressed in placental syncytiotrophoblasts, brain microvasculature, and the gastrointestinal tract, ABCG2 has been shown to mediate normal tis...
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