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Semaphorin

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Encyclopedia of Cancer

Synonyms

Collapsin; Growth guidance cues; Neuropilin ligands; Plexin ligands; SEMA

Definition

The semaphorins (abbreviated SEMA) constitute a family of genes encoding secreted and membrane-associated proteins which share a common domain called the sema domain.

The name semaphorin is derived from the Greek words “sema” meaning “signal” and “phor” which means “to carry.” This name was given to semaphorins owing to the function of the first semaphorins as guidance cues for axonal growth cones.

Characteristics

Subclasses

To date, the semaphorin family comprises 21 different members in vertebrates, 5 different members in invertebrates, and 2 virus-encoded members. All semaphorins contain an approximately 500 amino acid extracellular sema domain and a class-specific carboxy terminus that may encompass additional sequence motifs. At present, the known semaphorins are divided among 8 subclasses based on these structural features and phylogenetic analysis. The characteristics of individual...

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References

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See Also

  • (2012) Adult T-cell leukemia. In: Schwab M (ed) Encyclopedia of cancer, 3rd edn. Springer, Berlin/Heidelberg, p 100. doi:10.1007/978-3-642-16483-5_126

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  • (2012) Autocrine signaling. In: Schwab M (ed) Encyclopedia of cancer, 3rd edn. Springer, Berlin/Heidelberg, p 311. doi:10.1007/978-3-642-16483-5_470

    Google Scholar 

  • (2012) Colorectal cancer. In: Schwab M (ed) Encyclopedia of cancer, 3rd edn. Springer, Berlin/Heidelberg, p 916. doi:10.1007/978-3-642-16483-5_1265

    Google Scholar 

  • (2012) Cytokine. In: Schwab M (ed) Encyclopedia of cancer, 3rd edn. Springer, Berlin/Heidelberg, p 1051. doi:10.1007/978-3-642-16483-5_1473

    Google Scholar 

  • (2012) β Propeller. In: Schwab M (ed) Encyclopedia of cancer, 3rd edn. Springer, Berlin/Heidelberg, p 3005. doi:10.1007/978-3-642-16483-5_4771

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Correspondence to Claus Christensen .

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Christensen, C., Tamagnone, L. (2015). Semaphorin. In: Schwab, M. (eds) Encyclopedia of Cancer. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27841-9_5232-13

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  • DOI: https://doi.org/10.1007/978-3-642-27841-9_5232-13

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  • Online ISBN: 978-3-642-27841-9

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