Background: Lactotransferrin is a member of the transferrin family that transfer iron to the cells and control the level of free iron in the blood and external secretions. Lactotransferrin is a secreted protein and contains two transferrin-like domains. Lactotransferrin can be cleaved into the following four chains: Kaliocin-1; Lactoferroxin-A; Lactoferroxin-B; and Lactoferroxin-C. Lactoferroxin A; Lactoferroxin B; and Lactoferroxin C have opioid antagonist activity. Lactoferroxin A shows preference for mu-receptors; while Lactoferroxin B and Lactoferroxin C have somewhat higher degrees of preference for kappa-receptors than for mu-receptors. LTF has antimicrobial activity (bacteriocide; fungicide) and is part of the innate defense; mainly at mucoses.
Sequence: Glu 542- Gln 685
Purity: > 95 % as determined by reducing SDS-PAGE.
Formulation: Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual.
Endotoxin: Please contact us for more information.