2myq | pdb_00002myq
NMR structure of an Odin-Sam1 fragment
Structural highlights
Function[ANS1A_HUMAN] Regulator of different signaling pathways. Regulates EPHA8 receptor tyrosine kinase signaling to control cell migration and neurite retraction (By similarity).[1] Publication Abstract from PubMedOdin is a protein belonging to the ANKS family, and has two tandem Sam domains. The first, Odin-Sam1, binds to the Sam domain of the EphA2 receptor (EphA2-Sam); this interaction could be crucial for the regulation of receptor endocytosis and might have an impact on cancer. Odin-Sam1 associates with EphA2-Sam by adopting a "mid-loop/end-helix" model. In this study three peptide sequences, encompassing the mid-loop interacting portion of Odin-Sam1 and its C-terminal alpha5 helix, were designed. Their conformational properties were analyzed by CD and NMR. In addition, their abilities to interact with EphA2-Sam were investigated by SPR studies. The peptides adopt a predominantly disordered state in aqueous buffer, but a higher helical content is evident in the presence of the cosolvent trifluoroethanol. Dissociation constants towards EphA2-Sam were in the high micromolar range. The structural findings suggest further routes for the design of potential anti-cancer therapeutics as inhibitors of EphA2-Sam heterotypic interactions. Peptide Fragments of Odin-Sam1: Conformational Analysis and Interaction Studies with EphA2-Sam.,Mercurio FA, Di Natale C, Pirone L, Scognamiglio PL, Marasco D, Pedone EM, Saviano M, Leone M Chembiochem. 2015 Jun 26. doi: 10.1002/cbic.201500197. PMID:26120079[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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