Recombinant Active Human INHBB Protein, His-tagged(C-ter)

• Cat.No.: INHBB-222H
• Product Overview: Recombinant Active Human INHBB Protein with His tag (C-ter) was expressed in E. coli.

Specification

• Species: Human
• Source: E.coli
• Tag: His
• Description: The inhibin beta B subunit joins the alpha subunit to form a pituitary FSH secretion inhibitor. Inhibin has been shown to regulate gonadal stromal cell proliferation negatively and to have tumour-suppressor activity. In addition, serum levels of inhibin have been shown to reflect the size of granulosa-cell tumors and can therefore be used as a marker for primary as well as recurrent disease. Because expression in gonadal and various extragonadal tissues may vary severalfold in a tissue-specific fashion, it is proposed that inhibin may be both a growth/differentiation factor and a hormone. Furthermore, the beta B subunit forms a homodimer, activin B, and also joins with the beta A subunit to form a heterodimer, activin AB, both of which stimulate FSH secretion. [provided by RefSeq, Jul 2008]
• Form: Powder
• Bio-activity: Determined by its ability to induce hemoglobin expression in K562 cells. The ED50 for this effect is < 0.7 ng/mL. The specific activity of recombinant human Activin B is > 1.5 x 10^6 IU/mg.
• AA Sequence: MGLECDGRTNLCCRQQFFIDFRLIGWNDWIIAPTGYYGNYCEGSCPAYLAGVPGSASSFHTAVVNQYRMRGLNPGTVNSCCIPTKLSTMSMLYFDDEYNIVKRDVPNMIVEECGCA
• Endotoxin: Endotoxin level is less than 0.1 EU/μg of the protein, as determined by the LAL test.
• Purity: > 98% (by SDS-PAGE)
• Applications: SDS-PAGE
• Notes: For laboratory research only, not for drug, diagnostic or other use.
• Storage: Lyophilized protein should be stored at -20°C. After reconstitution, aliquot and store at -20°C or -80°C for up to one month. Storage in frost free freezers is not recommended. Avoid repeated freeze/thaw cycles. Suggest spin the vial prior to opening.
• Storage Buffer: PBS (pH 8.0)
• Reconstitution: It is recommended to reconstitute the lyophilized protein in sterile water to a concentration not less than 100 μg/mL and incubate the stock solution for at least 20 min at room temperature to make sure the protein is dissolved completely.

Gene Information

• Gene Name: INHBB inhibin, beta B [ Homo sapiens ]
• Official Symbol: INHBB
• Synonyms: INHBB; inhibin, beta B; inhibin, beta B (activin AB beta polypeptide); inhibin beta B chain; Inhibin, beta-2; activin beta-B chain; activin AB beta polypeptide; MGC157939
• Gene ID: 3625
• mRNA Refseq: NM_002193
• Protein Refseq: NP_002184
• MIM: 147390
• UniProt ID: P09529