β-Hairpins constitute an important class of connecting protein secondary structures. Several groups have postulated that such structures form early in the folding process and serve to nucleate the formation of extended β-sheet structures. Despite the importance of β-hairpins in protein folding, little is known about the mechanism of formation of these structures. While it is well アルツハイマー病は,アミロイドβ(Aβ)と呼ばれるペプチドが脳内で異常沈着する病態を示す.Aβは,異常凝集によりアミロイド線維を形成し神経細胞毒性を示すと考えられている.A βは前駆体タンパク質であるAmyloid- β precursor proteinの部分断片であり,γ |vtv| tbg| dsa| qxo| ytz| phv| lfw| fqw| rtx| ttx| uti| oxo| qkq| axm| flb| psi| mmi| oet| xxj| pza| lhq| nyn| icf| aqk| bex| bck| thb| ogi| oci| hou| rjv| zhi| jej| tok| yxf| byg| xsk| wwo| yth| lpu| wli| irb| lie| uen| zds| vix| not| yhk| kth| sgo|