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Splicing pattern, transcript start distribution, and DNA sequence of the mouse gene (Mobp) encoding myelin-associated oligodendrocytic basic protein



Splicing pattern, transcript start distribution, and DNA sequence of the mouse gene (Mobp) encoding myelin-associated oligodendrocytic basic protein



Molecular and Cellular Neurosciences 13(4): 229-236



We have cloned the mouse gene Mobp, encoding the family of myelin-associated oligodendrocytic basic proteins (MOBP), to facilitate elucidation of its genomic organization and regulation. We report near complete sequence analysis of the Mobp gene (>11 kb), including complete sequence of all exons and their associated splice junctions. The Mobp gene comprises eight discrete exons and encompasses a genomic region in excess of 15 kb. We provide a definitive analysis of the alternative splicing events and exon usage required in the generation of the reported splice variants of Mobp transcripts. We identify sequences corresponding to the coding regions of all reported protein isoforms. Consequently, we demonstrate that sequence regions, predicted to encode unique portions of two putative protein isoforms in the rat (MOBP 71 and MOBP 99), are not fully conserved between the rat and the mouse: we predict that the mouse equivalents are two distinct polypeptides of 73 amino acids, MOBP73A and MOBP73B, respectively. We have analyzed sequence from 63 oligo-capped, cloned cDNA fragments and identify six transcription start points associated with the Mobp gene at postnatal day 26. This study provides the platform for a more detailed analysis of the function of the Mobp gene product and subsequent evaluation of its possible involvement in known neuropathies.

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Accession: 011389546

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PMID: 10328883

DOI: 10.1006/mcne.1999.0745


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