From: Structural and functional characteristics of xenavidin, the first frog avidin from Xenopus tropicalis
Protein
Observed molecular weight (kDa)
Theoretical molecular weightb(kDa)
Xenavidin (-BTN)
74.5a
59.5
Xenavidin (+BTN)
73.3a
59.7
Avidin (-BTN)
62.5a
57.4