Phospho-SP1 (Thr453) Polyclonal Antibody, Cy5.5 Conjugated

Sp1 is a sequence-specific transcription factor that recognizes GGGGCGGGGC and closely related sequences, which are often referred to as GC boxes. Sp1 was initially identified as a HeLa cell-derived factor that selectively activates in vitro transcription from the SV40 promoter and binds to the multiple GC boxes in the 21-bp repeated elements in SV40. The sequence specificity of DNA binding is conferred by Zn (II) fingers, whereas a different region of Sp1 appears to regulate the affinity of DNA binding. Sp1 belongs to a subgroup of transcription factors that are phosphorylated upon binding to promoter sequences. Evidence suggests that the early growth response gene, Erg-1 (also known as Zif268 or NGF1-A) (7), may downregulate certain mammalian gene promoters by competing with Sp1 for binding to an overlapping binding motif. The gene encoding human Sp1 maps to chromosome 12q13.1.

SP1 Thr453; SP1 T453; p-SP1 phospho T453; p-TSFP1 phospho T453; Sp1 transcription factor isoform a; TSFP1; TSFP 1; Specicity protein 1; Transcription factor Sp1; SP 1; SP1; Sp1 transcription factor; SP1_HUMAN.