Background: The long form of sphingosine kinase 2 (Sphk2-L) is a species-specific isoform of the Sphk2 enzyme expressed in human but not in mouse. It is an N-terminal extended form of Sphk2, extended by 36 amino acids. It functions as expected, catalyzing the formation of sphingosine 1-phosphate from sphingosine, however it appears to have a decreased ability to inhibit DNA synthesis as compared to Sphk2-S (short form of Sphk2). Under normal cellular conditions, Sphk2-L does not appear to inhibit DNA synthesis, but under serum deprivation, SphK2-L translocates to the nucleus and accumlates. This accumlation may be involved in the cessation of cell proliferation or apoptosis depending on the cell type.
Positive Control: HEK293 cells.
Immunogen: Synthetic peptide derived from the N-terminal extension of the Sphk2-L protein.
Purification Method: Ammonium Sulfate Precipitation.
Formulation: Provided as solution in phosphate buffered saline with 0.08% sodium azide.
References: 1. Okada, T., et al. 'Involvement of N-terminal-extended form of sphingosine kinase 2 in serum-dependent regulation of cell proliferation and apoptosis.' J. Biol. Chem. 2005, 280, 36318-36325.
UniProt: AF245447.
Caution: This product is intended FOR RESEARCH USE ONLY, and FOR TESTS IN VITRO, not for use in diagnostic or therapeutic procedures involving humans or animals.
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