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  • Title: Recombinant lactoferrin (Lf) of Vechur cow, the critical breed of Bos indicus and the Lf gene variants.
    Author: Anisha S, Bhasker S, Mohankumar C.
    Journal: Gene; 2012 Mar 01; 495(1):23-8. PubMed ID: 22230225.
    Abstract:
    Vechur cow, categorized as a critically maintained breed by the FAO, is a unique breed of Bos indicus due to its extremely small size, less fodder intake, adaptability, easy domestication and traditional medicinal property of the milk. Lactoferrin (Lf) is an iron-binding glycoprotein that is found predominantly in the milk of mammals. The full coding region of Lf gene of Vechur cow was cloned, sequenced and expressed in a prokaryotic system. Antibacterial activity of the recombinant Lf showed suppression of bacterial growth. To the best of our knowledge this is the first time that the full coding region of Lf gene of B. indicus Vechur breed is sequenced, successfully expressed in a prokaryotic system and characterized. Comparative analysis of Lf gene sequence of five Vechur cows with B. taurus revealed 15 SNPs in the exon region associated with 11 amino acid substitutions. The amino acid arginine was noticed as a pronounced substitution and the tertiary structure analysis of the BLfV protein confirmed the positions of arginine in the β sheet region, random coil and helix region 1. Based on the recent reports on the nutritional therapies of arginine supplementation for wound healing and for cardiovascular diseases, the higher level of arginine in the lactoferrin protein of Vechur cow milk provides enormous scope for further therapeutic studies.
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