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  • Title: Molecular cloning and characterization of the bovine and human tuftelin genes.
    Author: Bashir MM, Abrams WR, Tucker T, Sellinger B, Budarf M, Emanuel B, Rosenbloom J.
    Journal: Connect Tissue Res; 1998; 39(1-3):13-24; discussion 63-7. PubMed ID: 11062985.
    Abstract:
    The bovine tuftelin gene was cloned and its structure determined by DNA sequence analysis and comparison to bovine tuftelin cDNA. The analyses demonstrated that the cDNA contains a 1014 bp open reading frame encoding a protein of 338 residues with a calculated molecular weight of 38,630 kDa and an isoelectric point of 5.85. Although similar, these results differ from those previously published [Deutsch et al. (1991) J. Biol. Chem. 266, 16021-16028] which contained a different conceptual amino acid sequence for the carboxy terminal region and identification of a different termination codon because of the absence of a single guanine residue in the published sequence. The protein does not appear to share homology or domain motifs with any other known protein. The bovine gene consists of 13 exons ranging in size from 66 to 1531 bp, the latter containing the encoded carboxy terminal and 3' untranslated regions. These exons are embedded in greater than 28 kbp of genomic DNA and codons are generally not divided at exon/intron borders. Sequence analysis of the cDNA and products produced by reverse transcriptase/polymerase chain reaction demonstrated that exons 2, 5 and 6 are alternatively spliced. The 3' portion of the human gene was also isolated and characterized by DNA sequencing, which demonstrated agreement between the bovine and human sequences in the segment in question. The difference between the presently reported sequence and that of the previously published one suggests the possibility of an unusual type of polymorphism which would result in markedly different amino acid sequences at the carboxy terminal region of the protein. The human tuftelin gene was localized to chromosome 1q21 by in situ hybridization.
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