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  • Title: Novel mutation in UMPS gene leads to false positive result of DUMPS (genetic disorder) in buffaloes: need for gene sequencing before confirming results of RFLP in new species.
    Author: Sudhakar A, Khade A, Nayee N, Chandrasekhar Reddy RV, Maurya B.
    Journal: J Genet; 2021; 100():. PubMed ID: 34344843.
    Abstract:
    Deficiency of uridine monophosphate synthase (DUMPS) is a lethal genetic disorder associated with early embryonic mortality. Murrah and Mehsana male buffaloes (n = 594) were screened for DUMPS by PCR-RFLP technique. A few Murrah buffalo male calves were found to be carriers of DUMPS in RFLP, which has not been reported earlier. On the Sanger sequencing, a novel A to G substitution mutation was identified in AvaI restriction recognition site of UMPS gene in buffaloes. This mutation hinders digestion of DNA by AvaI which leds to false positive results for DUMPS carrier in RFLP. The results indicated that genome sequencing must be performed before confirming results of RFLP in any new species. All the buffaloes that were tested had only wild-type genotype in exon 5 for DUMPS specific allele.
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