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.Restriction digestion of the gene and the vector Here the vector to be used is pET28a and pMD18-T vector. -Then both the vector-And the gene insert is incubated with the respective restriction enzymes for the desired timeAfter the restriction digestion the vector and the gene so digested is run in the agarose gel electrophoresis for purification purpose. -The band showing the corresponding vector band and the gene band is cut and then eluted by the help of the gel extraction kitLigation of the gene and vector :-The gene and the vector are ligated by the help of the ligase enzyme. There after the entire gene vector construct is again visualized in the agarose gel by the help of the electrophoresisTransformation of the gene – vector construct into the competent cells:--Suitable host is used for transformation of the gene vector construct. The host can be E.coli BL21 cells - or DH5 α cells. -The cells colonies are picked and subjected to the PCR with the same conditions of the amplification -The colonies having the recombinant plamids are amplified and will show the positive band on the gelIsolation of the recombinant plasmind The recombinant plasmid is isolated by the alkaline lysis method. Alkaline lysis is the protocol used to isolate plasmid DNA by breaking the cells open. -Here the cell containing plasmid and(SDS, PAGE) 7- Expression of the gene :- 1mM IPTG final concentration. Then the total cells are boiled and the protein comes out. The protein so obtained is subjected to run in the SDS PAGE for expression
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