Signal-induced proliferation-associated protein 1 is a protein that in humans is encoded by the SIPA1gene.[5][6]
The product of this gene is a mitogen induced GTPase activating protein (GAP). It exhibits a specific GAP activity for Ras-related regulatory proteins Rap1 and Rap2, but not for Ran or other small GTPases. This protein may also hamper mitogen-induced cell cycle progression when abnormally or prematurely expressed. It is localized to the perinuclear region. Two alternatively spliced variants encoding the same isoform have been characterized to date.[6]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Wada Y, Kubota H, Maeda M, Taniwaki M, Hattori M, Imamura S, Iwai K, Minato N (Mar 1997). "Mitogen-inducible SIPA1 is mapped to the conserved syntenic groups of chromosome 19 in mouse and chromosome 11q13.3 centromeric to BCL1 in human". Genomics. 39 (1): 66–73. doi:10.1006/geno.1996.4464. PMID9027487.