Artificial nucleic acid cleavage agents have received considerable attention due to their very important applications in biochemistry and molecular biology.Seryl-histidine is a dipeptide possessing DNA,protein and est...Artificial nucleic acid cleavage agents have received considerable attention due to their very important applications in biochemistry and molecular biology.Seryl-histidine is a dipeptide possessing DNA,protein and ester cleavage activity.Since peptide dendrimers have a lot of unique physical and chemical properties compared to normal peptide chain and have a great varieties of applications in biological areas,two and four branched seryl-histidine planted peptide dendrimers were synthesized by Fmoc solid phase peptide synthesis approach.The products were purified by HPLC and characterized by ESI-MS.Their DNA cleavage activities were tested by means of Agarose Gel Electrophoresis.In the cleavage reaction,peptide dendrimer showed a strong combining inclination to DNA,highly concentrated dendrimer solution can quench the fluorescence of EB.Even though,the DNA cleavage activity of the dendrimers was lower than that of seryl-histidine dipeptide monomer.展开更多
文摘Artificial nucleic acid cleavage agents have received considerable attention due to their very important applications in biochemistry and molecular biology.Seryl-histidine is a dipeptide possessing DNA,protein and ester cleavage activity.Since peptide dendrimers have a lot of unique physical and chemical properties compared to normal peptide chain and have a great varieties of applications in biological areas,two and four branched seryl-histidine planted peptide dendrimers were synthesized by Fmoc solid phase peptide synthesis approach.The products were purified by HPLC and characterized by ESI-MS.Their DNA cleavage activities were tested by means of Agarose Gel Electrophoresis.In the cleavage reaction,peptide dendrimer showed a strong combining inclination to DNA,highly concentrated dendrimer solution can quench the fluorescence of EB.Even though,the DNA cleavage activity of the dendrimers was lower than that of seryl-histidine dipeptide monomer.