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Objective To construct an eukaryote expression vector containing bone morphogenetic protein 2 (BMP 2) mature peptide. Methods Gene splicing by overlapping extension PCR (SOE PCR) method was used to clone BMP2 signal peptide and mature peptide and their fusion fragment.The fusion fragment was cloned into an eukaryote expressing vector pcDNA3.1/myc His(- )A. The sequence of the fusion fragment of BMP2 signal peptide and mature peptide was identified.Results The sequence of the fusion fragment was correct comparing with BMP2 signal peptide and mature peptide published by NCBI.Conclusion The vector pcDNA3.1/myc His(- )A BMP2sm constructed in this experiment was suitable to applying in eukaryotic expression of BMP2.