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  • Title: High nucleotide and amino acid sequence similarities in tumour necrosis factor-alpha amongst Indian buffalo (Bubalus bubalis), Indian cattle (Bos indicus) and other ruminants.
    Author: Gupta PK, Bind RB, Walunj SS, Saini M.
    Journal: Eur J Immunogenet; 2004 Aug; 31(4):189-93. PubMed ID: 15265025.
    Abstract:
    Tumour necrosis factor-alpha (TNF-alpha) mRNA from Indian water buffalo (Bubalus bubalis) and Indian cattle (Bos indicus) was reverse transcribed and amplified using reverse transcriptase-polymerase chain reaction (RT-PCR). The nucleotide sequences of cDNAs were determined after cloning into pGEM-T-Easy vector (Promega, Madison, WI) and compared with reported nucleotide sequences of TNF-alpha cDNA from other species. The nucleotide sequences of TNF-alpha from Indian cattle revealed significantly high similarities at nucleotide (99.2%) and amino acid (100%) levels with those of cattle (Bos taurus; Zebu). The sequences from buffalo had 98.4% nucleotide and 99.1% amino acid similarities with Indian cattle, indicating functional cross-reactivity. One amino acid deletion at position 63 and one substitution (A-->P) at position 64 were observed in buffalo compared with Indian cattle. The amino acid deletion at position 63 was predicted due to differences in pre-mRNA splicing.
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