sortase 관련 실험!!!
trasformation : BW25113-pATLIC-srtA; BL21(DE3)-pJL-srtA,-pJL-2*Ala:GFP,-pJL-mRFP1:LPETAA; DH5a-pATLIC-srtA,-pJL-srtA,-pJL-2*Ala:GFP,-pJL-mRFP1:LPETAA