glycosylphosphatidylinositol (GPI) anchor at their C-termini. This post-translational modification causes these proteins to be noncovalently tethered to the plasma membrane. The synthesis of truncated GPI anchor analogues is reported; these compounds were designed for use as soluble substrates for GPI transamidase (GPI-T), the enzyme that appends the GPI anchor onto proteins.
许多真核蛋白在其C末端被糖基
磷脂酰肌醇(G
PI)锚定。这种翻译后修饰导致这些蛋白质非共价地束缚在质膜上。报告了截短的G
PI锚类似物的合成。这些化合物被设计用作G
PI转酰胺酶(G
PI-T)的可溶性底物,G
PI转酰胺酶是将G
PI锚点附加到蛋白质上的酶。