A portion of amino acids 39-108 from the human protein was used as the immunogen for this StAR antibody.
Steroidogenic Acute Regulatory Protein (STAR) controls the rate-limiting step of steroidegenesis by translocating cholesterol from the outer mitochondrial membrane to the inner membrane where it is later cleaved to pregnenolone. It is primarily present in steroid-producing cells, including Leydig cells in the testis, theca cells and luteal cells in the ovary and adrenal cells in the adrenal cortex. Due to low levels of pregnenolone, seminomas and Leydig cell tumors display no specific STAR staining. Therefore, STAR antibody may assist in differentiating sex cord stromal tumors (SCST), seminomas and embryonal carcinomas.
0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide
Antibody Type:
Primary Antibody
Application Dilute:
Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT
Application Notes:
The concentration stated for each application is a general starting point. Variations in protocols, secondaries and substrates may require the StAR antibody to be titered up or down for optimal performance.
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