Genomic structure of human microtubule-associated protein 2 (MAP-2) and characterization of additional MAP-2 isoforms

Nellie Kalcheva, Joanna Albala, Kathleen O'Guin, Heidi Rubino, Craig Garner, Bridget Shafit-Zagardo

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Abstract

We have determined that the gene for human microtubule-associated protein 2 (MAP-2) spans 19 exons, including 6 exons identified in this study, 1-4, 8, and 13: all six of these exons are transcribed. The alternative splicing of ending exons generates a greater diversity of MAP-2 transcripts and isoforms. The first three exons encode alternate 5' untranslated regions that can be spliced to additional untranslated sequences contained in exons 4 and 5. Exons 8 and 13 are transcribed in human fetal spinal cord, adult brain, MSN cells, and rat brain, and each exon maintains an open reading frame with both high and low molecular weight MAP-2 isoforms. Antibodies generated to synthetic peptides of exons 8 and 13 demonstrate that these exons are translated and MAP-2 isoforms containing these exons are generated.

Original languageEnglish (US)
Pages (from-to)10894-10898
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume92
Issue number24
DOIs
Publication statusPublished - Nov 21 1995

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