Background:

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.

Specificity:

SREBP-1 (phospho-S439) polyclonal antibody detects endogenous levels of SREBP-1 protein only when phosphorylated at Ser439.

Alternative names:

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

Species reactivity:

Human,Rat,Mouse

Host:

Rabbit

Ig type:

1 mg/ml in Phosphate buffered saline (PBS) with 0.05% sodium azide, approx. pH 7.3.

Immunogen:

Synthetic phosphopeptide derived from human SREBP-1 around the phosphorylation site of Serine 439

Purification & Purity:

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

Molecular weight:

~ 121 kDa

Applications:

WB

Usage:

WB: 1:500~1:1000

Storage:

Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze-thaw cycles.

Precautions:

For research use only, not for use in diagnostic procedure.

More info:

Email: info@sobekbio.com

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