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Gene. 2000 Oct 3;256(1-2):1-11.

Cloning and characterization of the human ameloblastin gene.

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1
Department of Oral Pathology, Osaka University Faculty of Dentistry, 1-8 Yamadaoka, Suita, 565-0871, Osaka, Japan. toyosawa@dent.osaka-u.ac.jp

Abstract

We isolated the full-length human ameloblastin (AMBN) cDNA clone using reverse transcription-polymerase chain reaction (RT-PCR) methods. Sequence analysis of the AMBN cDNA revealed an open reading frame of 1341bp encoding a 447-amino-acid protein. Comparison with pig, cattle, rat, and mouse AMBN sequences showed a high amino acid sequence similarity and led to the identification of a novel 78bp (26 amino acids) insert resulting from internal sequence duplication. By DNA analysis of a human genomic clones, the AMBN gene was shown to consist of 13 exons and a novel 78bp segment, which proved to comprise two small exons. Human ameloblastomas express AMBN transcripts that contain some mutations.

PMID:
11054529
[Indexed for MEDLINE]
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