SREBP-1 (phospho-S439) polyclonal antibody

Transcription of the LDL receptor gene is controlled by a ten base pair sequence in the 5' flanking region, designated sterol regulatory element 1 (SRE-1) . When cellular sterol stores are depleted, the element is activated, the gene is transcribed and the cellular uptake of LDL increases. SREBP-1 (also designated ADD1, for adipocyte determination and differentiation factor) is synthesized as a precursor that is attached to the nuclear envelope and endoplasmic reticulum. In sterol-depleted cells, the membrane-bound precursor is cleaved to generate a soluble NH2-terminal fragment that translocates to the nucleus to activate transcription. Sterols inhibit the cleavage of SREBP-1.

Sterol regulatory element-binding protein 1; SREBP-1; Class D basic helix-loop-helix protein 1; bHLHd1; Sterol regulatory element-binding transcription factor 1; Processed sterol regulatory element-binding protein 1; SREBF1; BHLHD1; SREBP1

The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is > 95% (by SDS-PAGE) .

Western blot (WB) analysis of SREBP-1 (phospho-S439) polyclonal antibody at 1:500 dilution Lane1:Myla2059 whole cell lysate (40ug) Lane2:RAW264.7 whole cell lysate (40ug) Lane3:PC12 whole cell lysate (40ug) Lane4:HEK293T whole cell lysate (40ug) Lane5:HepG2 whole cell lysate (40ug)