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Conditions of optimal STAR Protein performance should be determined experimentally by the investigator.
Price/availability/specifications subject to change without notice. Unless otherwise indicated, our catalog and customized products are for research use only and not intended for human or animal diagnostic or therapeutic use.
Phone: 1-617-401-8149
Fax: 1-617-606-5019
Email: message@sydlabs.com
Or leave a message with a formal purchase
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Introduction
STAR facilitates the fast increase in pregnenolone synthesis stimulated by tropic hormones. STAR increases pregnenolone synthesis more than four-fold and a major STAR transcription of 1.6 kb is observed in ovary and testis. Throughout the growth and differentiation period of the ovary follicle, the immunoreactivity is likely to move from the granulosa cells of early antral follicles to the theca cell layers in the adult.
BP002241-PRO-979: Recombinant Human Steroidogenic Acute Regulatory Protein (STAR) Protein
Source: E. coli-derived.
Recombinant Human Steroidogenic Acute Regulatory Protein (STAR) Protein is a single, non-glycosylated polypeptide chain containing 243 amino acids (64-285) and having a molecular mass of 27.1 kDa. Recombinant Human Steroidogenic Acute Regulatory Protein (STAR) Protein is fused to a 21 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.
Purity: > 90% as determined by SDS-PAGE.
Formulation: The STAR solution (1 mg/ml) contains 20 mM Tris-HCl buffer (pH 8.0), 2 mM DTT and 20% glycerol.
Shipping: The product is shipped with ice pack. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70°C as supplied.
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