– Binds specifically to the neurotoxin saxitoxin. Its physiological role may be to transport or sequester an endogenous organic molecule other than Fe(3+). It may participate in a detoxification mechanism for neutralizing a microbial toxin. Saxiphilin Protein, Aquarana catesbeiana, Recombinant (His) is expressed in HEK293 mammalian cells with N-6xHis-Myc tag. The predicted molecular weight is 43.7 kDa and the accession number is P31226.