Sp1 protein was the first transcription factor to be cloned and characterized. It was first detected in HeLa cells on the basis of its ability to activate the SV40 early promoter transcription. Analysis of structure and function has revealed that Sp1 can be separated into discrete functional domains. The DNA-binding domain consists of three zinc fingers that specifically bind to the GC-box element. Mouse monoclonal antibody raised against a partial recombinant SP1.
Immunogen
SP1 (NP_612482, 89 a.a. ~ 198 a.a) partial recombinant protein with GST tag. MW of the GST tag alone is 26 KDa.
Sp1 protein was shown to recognize and bind selectively to a GC-rich consensus sequence (GC-box: GGGCGG or CACCC) that presents in the promoter of several important cellular genes, including Simian vacuolating virus 40 (SV40) early, human immunodeficiency virus-1 (HIV-1), platelet-derived growth factor subunit B (PDGF-B), Myc, c-Src etc. In addition to transcription, Sp1 function has been linked to cell growth, cancer and Huntington disease.
Physical form
Solution in phosphate buffered saline, pH 7.4
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The Journal of biological chemistry, 292(6), 2143-2158 (2016-12-29)
The expression of Ring1- and YY1-binding protein (RYBP) is reduced in several human cancers, but the molecular mechanism(s) have remained elusive. In this study, we used human hepatocellular carcinoma (HCC) cell lines and tissue specimens to study the mechanism and
Mithramycin is a gene-selective Sp1 inhibitor that identifies a biological intersection between cancer and neurodegeneration.
Sleiman SF
The Journal of Neuroscience, 31(18), 6858-6870 (2011)
Structures of zinc finger domains from transcription factor Sp1. Insights into sequence-specific protein-DNA recognition.
Narayan VA
The Journal of Biological Chemistry, 272(12), 7801-7809 (1997)
Decreased association of the transcription factor Sp1 with genes downregulated in Huntington's disease.
Chen-Plotkin AS
Neurobiology of Disease, 22(2), 233-241 (2006)
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