Anti-SIVA/SIVA1 Antibody Picoband® Fluoro550 Conjugated

Apoptosis regulatory protein Siva is a protein that in humans is encoded by the SIVA1 gene. This gene encodes an E3 ubiquitin ligase that regulates cell cycle progression, cell proliferation and apoptosis. The N-terminus of this protein binds to the cytoplasmic tail of the CD27 antigen, a member of the tumor necrosis factor receptor (TNFR) superfamily. In response to UV radiation-induced DNA damage, this protein has been shown to mediate the ubiquitination of proliferating cell nuclear antigen (PCNA), an important step in translesion DNA synthesis.

Cell Type Marker, Developmental Families, Domain Families, Epigenetics and Nuclear Signaling, Neurogenesis, Neurology Process, Neuroscience, Transcription

Multifunctional transcription factor with different regions mediating its different effects. Acts by binding (via its C-terminal domain) to sequences related to the consensus octamer motif 5'-ATGCAAAT-3' in the regulatory regions of its target genes. Regulates the expression of specific genes involved in differentiation and survival within a subset of neuronal lineages. It has been shown that activation of some of these genes requires its N-terminal domain, maybe through a neuronal-specific cofactor. Ativates BCL2 expression and protects neuronal cells from apoptosis (via the N-terminal domain) . Induces neuronal process outgrowth and the coordinate expression of genes encoding synaptic proteins. Exerts its major developmental effects in somatosensory neurons and in brainstem nuclei involved in motor control. Stimulates the binding affinity of the nuclear estrogene receptor ESR1 to DNA estrogen response element (ERE), and hence modulates ESR1-induced transcriptional activity. May positively regulate POU4F2 and POU4F3. Regulates dorsal root ganglion sensory neuron specification and axonal projection into the spinal cord. Plays a role in TNFSF11-mediated terminal osteoclast differentiation. Negatively regulates its own expression interacting ly with a highly conserved autoregulatory domain surrounding the transcription initiation site.

1. Nestler, M., Martin, U., Hortschansky, P., Saluz, H.-P., Henke, A., Munder, T. The zinc containing pro-apoptotic protein siva interacts with the peroxisomal membrane protein pmp22. Molec. Cell. Biochem. 287: 147-155, 2006. 2. Prasad, K. V. S., Ao, Z., Yoon, Y., Wu, M. X., Rizk, M., Jacquot, S., Schlossman, S. F. CD27, a member of the tumor necrosis factor receptor family, induces apoptosis and binds to Siva, a proapoptotic protein. Proc. Nat. Acad. Sci. 94: 6346-6351, 1997. 3. Py, B., Slomianny, C., Auberger, P., Petit, P. X., Benichou, S. Siva-1 and an alternative splice form lacking the death domain, Siva-2, similarly induce apoptosis in T lymphocytes via a caspase-dependent mitochondrial pathway. J. Immun. 172: 4008-4017, 2004.