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  • Identification and sequence characterization of melanocortin 1 receptor gene (MC1R) in Bos indicus versus (Bos taurus X Bos indicus).

Identification and sequence characterization of melanocortin 1 receptor gene (MC1R) in Bos indicus versus (Bos taurus X Bos indicus).

Animal biotechnology (2019-03-21)
Talla Sridhar Goud, Ramesh Chandra Upadhyay, Suneel Kumar Onteru, Vijaya Bhaskar Reddy Pichili, Kiranmai Chadipiralla
ZUSAMMENFASSUNG

Melanocortin 1 receptor (MC1R) plays a vital role in melanogenesis and determines coat color of mammals. Polymorphic variants in MC1R, causing coat color variation, were described in few mammals; however, such studies were not done in cattle. The objective of the study was to explore the association of MC1R gene polymorphism within Tharparkar (Bos indicus) and Karan Fries (B. indicus X Bos taurus) cattle. Genomic DNA isolated from blood samples of Tharparkar breed by modified Phenol: Chloroform; Isoamyl alcohol method. Using genomic DNA as template for PCR, MC1R gene was amplified and sequenced. The sequences were analyzed and submitted to Genbank with Acc.No MG373615-MG373644. Comparison of sequence alignment with other bovine species using ClustalW revealed 99-96% similarity. MC1R gene phylogenetic analyses were analyzed using MEGA X. The MC1R gene tree, protein domains and genetic variation of cattle were retrieved from Ensemble Asia Cattle Genome Browser. Eight single nucleotide polymorphisms (SNPs) (c.296T > C, c.583T > C, c.663C > T, c.830T > C, c.853G > A, c.880G > A, c.906C > G, c.927C > T) in CDS reveal high genetic variability. Subsequent to amino acid changes p.L99P, p.F195L, p.F277S, p.A285T and p.D293N, p.R302S, respectively found in seven-transmembrane. Mutations appeared in MC1R of B. taurus with white and black coat color as compared to B. indicus with white coat.

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ReadyMix Taq PCR-Reaktionsmischung, with MgCl2