T22-GFP-H6 A kDa FU (%) B LINKER T22 N C 30.7 68.7 H6 GFP T22-GFP-H6(LOOP) M LINKER N T22 GFP C 30.7 67.6 H6 H6-GFP-T22 T22 LINKER GFP C 30.6 76 H6 N GFP-H6 N C 27.6 100 H6 GFP C