Journal of Molecular Medicine

, Volume 76, Issue 2, pp 141–146

Three alternatively spliced variants of the gene coding for the human bone morphogenetic protein-1


  • Michal Janitz
    • Deutsches Rheuma-Forschungszentrum, Hannoversche Strasse 27, D-10115 Berlin, Germany
  • Volker Heiser
    • Institut für Genbiologische Forschung Berlin GmbH, Berlin, Germany
  • U. Böttcher
    • TIB MolBiol, Berlin, Germany
  • Olfert Landt
    • TIB MolBiol, Berlin, Germany
  • R. Lauster
    • Deutsches Rheuma-Forschungszentrum, Hannoversche Strasse 27, D-10115 Berlin, Germany

DOI: 10.1007/s001090050202

Cite this article as:
Janitz, M., Heiser, V., Böttcher, U. et al. J Mol Med (1998) 76: 141. doi:10.1007/s001090050202


 The human bone morphogenetic protein-1 was originally identified as a protein with the capacity to stimulate bone and cartilage growth in vitro. Its gene sequence identified it as an alternatively spliced human homolog of the Drosophila dorsal-ventral patterning tolloid gene and suggested that it activates transforming growth factor-β-like molecules by proteolytic cleavage. Its expression pattern and its recently identified activity as a procollagen C proteinase, however, suggest that it has a more general function in the early stages of embryogenesis. This view is strengthened by the previous observation of a third alternatively spliced isoform of the gene, called bone morphogenetic protein 1/His. We now show that the gene is expressed in three additional variants, leading to shorter and slightly modified C-termini. The three variants are preferentially expressed in placenta but show individual differences in their expression profiles in other soft tissues.

Key words Bone morphogenetic proteinMorphogenesisAlternative splicingTissue-specific expressionTranscription

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© Springer-Verlag Berlin Heidelberg 1998