484-844aa. MW: 41.7 kDa. Purity >90% as determined by SDS-PAGE. Binds specifically to the neurotoxin saxitoxin. Its physiological role may be to transport or sequester an endogenous organic molecule other than Fe3+. It may participate in a detoxification mechanism for neutralizing a microbial toxin.
Molecular cloning of bullfrog saxiphilin: a unique relative of the transferrin family that binds saxitoxin.Morabito M.A., Moczydlowski E.Proc. Natl. Acad. Sci. U.S.A. 91:2478-2482 (1994)