作者: Norihisa Yasui , Terukazu Nogi , Junichi Takagi
DOI: 10.1016/J.STR.2010.01.010
关键词:
摘要: Summary Apolipoprotein E receptor 2 (ApoER2) and very-low-density lipoprotein receptor, members of the low-density (LDLR) protein family, function as neuronal receptors for a secreted glycoprotein reelin during brain development. In both receptors, first LDLR class A (LA1) module is sufficient to bind reelin. Analysis 2.6 crystal structure receptor-binding fragment in complex with LA1 ApoER2 revealed that Lys2467 recognized by conserved Trp residue calcium-coordinating acidic residues from LA1, which together Lys2360 plays critical role interaction. This "double-Lys" recognition mode is, fact, shared among other family proteins ligand binding. The interface between covers small surface area ∼350 on each side, ensures stable formation under physiological conditions. An examination structure-guided mutagenesis on interface key features this