SHBG Protein

Sex hormone-binding globulin, SHBG, Sex steroid-binding protein, SBP, Testis-specific androgen-binding protein, ABP, Testosterone-estradiol-binding globulin, TeBG, Testosterone-estrogen-binding globulin, SHBG.

Sex-hormone-binding globulin (SHBG) is a beta-globulin which specifically binds steroid hormones; it is involved in the transport of sex steroids in plasma. The main site of SHBG synthesis is assumed to be the hepatocytes. The production of SHBG is regulated by androgen/estrogen balance, thyroid hormones, insulin and dietary factors, among others. The concentration of SHBG is a key factor regulating their distribution between protein-bound and free states. SHBG concentration determination is primarily significant in the evaluation of mild disorders of androgen metabolism and it allows detection of women with hirsutism who are likely to react to estrogen therapy. Testosterone/SHBG-ratios correlate well with both measured and calculated values for free testosterone thus aid to distinguish between subjects with excessive androgen activity and normal individuals. SHBG gene polymorphisms are linked with polycystic ovary syndrome and type 2 diabetes mellitus.

SHBG is a protein of approximately 45kD.

Sterile Filtered White lyophilized (freeze-dried) powder.

The protein was lyophilized from 20mM NH4HC03 solution.
May contain traces of buffer salts.

It is recommended to reconstitute the lyophilized SHBG in phosphate buffer, pH >7.0 containing 0.15M NaCl.

Lyophilized SHBG although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution SHBG should be stored at 4°C between 2-7 days and for future use below -18°C.
For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Please prevent freeze-thaw cycles.

>90% as visualized by SDS-Page.

FDA approved Plasma from each donor has been tested and found negative for antibodies to HIV-1 & 2, HCV, HBsAG, Parvovirus B19, HBc, HBV, HIV and Syphilis.

SDS