Human 3-oxo-5-alpha-steroid 4-dehydrogenase 2 (SRD5A2) ELISA Kit

SRD5a2 encodes a microsomal protein expressed at high levels in androgen-sensitive tissues such as the prostate. The encoded protein is active at acidic pH and is sensitive to the 4-azasteroid inhibitor finasteride. Deficiencies in this gene can result in male pseudohermaphroditism, specifically pseudovaginal perineoscrotal hypospadias (PPSH) . Steroid 5-alpha-reductase catalyzes the conversion of testosterone into the more potent androgen, dihydrotestosterone (DHT) .The cDNA contains a long 3-prime untranslated region and encodes a hydrophobic 254-amino acid protein that shares 50% sequence identity with human SRD5A1 and 46% identity with rat 5-alpha-reductase. The biochemical and pharmacologic properties of the enzyme were consistent with its being the major isozyme in genital tissue.

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Human 3-oxo-5-alpha-steroid 4-dehydrogenase 2 (SRD5A2) ELISA Kit has high sensitivity and excellent specificity for detection of Human SRD5A2. No significant cross-reactivity or interference between Human SRD5A2 and analogues was observed.

This Human 3-oxo-5-alpha-steroid 4-dehydrogenase 2 (SRD5A2) ELISA Kit employs a two-site sandwich ELISA to quantitate SRD5A2 in samples. An antibody specific for SRD5A2 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anySRD5A2 present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for SRD5A2 is added to the wells. After washing, Streptavidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of SRD5A2 bound in the initial step. The color development is stopped and the intensity of the color is measured.

• Do not mix components from different kit lots or use reagents beyond the kit expiration date.• Allow all reagents to warm to room temperature for at least 30 minutes before opening.• Pre-rinse the pipet tip with reagent, use fresh pipet tips for each sample, standard and reagent to avoid contamination.• Unused wells must be kept desiccated at 4 °C in the sealed bag provided.• Mix Thoroughly is very important for the result. It is recommended using low frequency oscillator or slight hand shaking every 10 minutes.• It is recommended that all samples and standards be assayed in duplicate or triplicate.