The invention discloses a method for taking super-
paramagnetism nanometer particles as a
solid phase to perform
peptide synthesis and synchronously construct a polypeptide magnetic nanometer probe. The method comprises: preparing silica-cladded super-
paramagnetism nanometer particles and rink-
amide-
linker-coupled silica-cladded super-
paramagnetism nanometer particles; respectively taking the two kinds of particles as
solid phases to perform
peptide synthesis; and adding a K
reagent into two groups of the
solid phases. Aiming at the silica-cladded super-paramagnetism nanometer particles, the K
reagent is capable of removing a side-chain protection group of the synthetic polypeptide but not
cutting off the polypeptide, so that the polypeptide magnetic nanometer probe is obtained. Aiming at the rink-
amide-
linker-coupled silica-cladded super-paramagnetism nanometer particles, the K
reagent is capable of removing the side-chain protection group of the synthetic polypeptide and
cutting off the polypeptide from the solid phase, so that the synthetic polypeptide is obtained. According to the method, the super-paramagnetism nanometer particles are capable of being rapidly divorced from a
reaction system under the effect of an external
magnetic field , so that synthesis is greatly facilitated, also polypeptide can be simply precisely synthesized, also the polypeptide magnetic nanometer probe is synchronously constructed for confirming the biological functions of the synthetic
peptide in vitro and
in vivo, and also the method is applicable to establishment of large-scale polypeptide
library and applicable to rapidly screening out functional peptides.