α-Amanitin-FGF2	FGF2 single conjugate with α-amanitin incorporated at Cys78 position
α-Amanitin/MMAE-FGF2	FGF2 dual warheads conjugate with α-amanitin incorporated at Cys78 position and MMAE incorporated at PrK96 position
ADCs	Antibody drug conjugates
AR2G	Amine reactive second-generation biosensor
ATCC	American type culture collection
BLI	Bio-layer Interferometry technique
CuAAC	Cu(I)-catalyzed azide-alkyne 1,3-dipolar cycloaddition
FBS	Fetal bovine serum
FGF2	Fibroblast growth factor 2
FGFR1	Fibroblast growth factor receptor 1
MMAD	Monomethyl auristatin D
MMAE	Monomethyl auristatin E
MMAE-FGF2	FGF2 single conjugate with MMAE incorporated at PrK96 position
NBCS	Newborn bovine calf serum
PrK	N-ε-Propargyloxycarbonyl-l-lysine
THPTA	Tris(3-hydroxypropyltriazolylmethyl)amine