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    Anim Genet. 1991;22(4):333-42.

    Genotyping of bovine kappa-casein (kappa-CNA, kappa-CNB, kappa-CNC, kappa-CNE) following DNA sequence amplification and direct sequencing of kappa-CNE PCR product.

    Schlieben S, Erhardt G, Senft B.

    Institut für Tierzucht und Haustiergenetik, Justus-Liebig-Universität, Giessen, Germany.

    Genomic DNA isolated from blood and semen of dairy cattle with known kappa-casein (kappa-CN) genotypes was subjected to Southern blot hybridization and polymerase chain reaction (PCR) using up to 14 restriction endonucleases. kappa-casein genotypes AA, AB and BB were identified using Hin dIII and Hin fI while genotypes with kappa-CNC and kappa-CNE were misidentified. Direct sequencing of the PCR product (kappa-CN EE) showed a substitution of guanine (kappa-CNA,B) by adenine (kappa-CNE) which creates a HaeIII restriction site. Therefore using PCR followed by Hin dIII or HinfI and Hae III digest allows discrimination between kappa-casein A, B and E directly at the DNA level.

    PMID: 1683188 [PubMed - indexed for MEDLINE]

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