Steroid 17-alpha-hydroxylase/17,20 lyase (CYP17A1), partial, human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: AKKT+24-508aa. Protein Length: Partial. Tag Info: N-terminal 6xHis-tagged. Target Protein Sequence: AKKTGAKYPK SLLSLPLVGS LPFLPRHGHM HNNFFKLQKK YGPIYSVRMG TKTTVIVGHH QLAKEVLIKK GKDFSGRPQM ATLDIASNNR KGIAFADSGA HWQLHRRLAM ATFALFKDGD QKLEKIICQE ISTLCDMLAT HNGQSIDISF PVFVAVTNVI SLICFNTSYK NGDPELNVIQ NYNEGIIDNL SKDSLVDLVP WLKIFPNKTL EKLKSHVKIR NDLLNKILEN YKEKFRSDSI TNMLDTLMQA KMNSDNGNAG PDQDSELLSD NHILTTIGDI FGAGVETTTS VVKWTLAFLL HNPQVKKKLY EEIDQNVGFS RTPTISDRNR LLLLEATIRE VLRLRPVAPM LIPHKANVDS SIGEFAVDKG TEVIINLWAL HHNEKEWHQP DQFMPERFLN PAGTQLISPS VSYLPFGAGP RSCIGEILAR QELFLIMAWL LQRFDLEVPD DGQLPSLEGI PKVVFLIDSF KVKIKVRQAW REAQAEGST. Purity: Greater than 90% as determined by SDS-PAGE. Endotoxin: Not test. Biological Activity: n/a. Form: Liquid or Lyophilized powder. Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0. Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20 °C/-80 °C. Our default final concentration of glycerol is 50%. Customers could use it as reference. Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20 °C/-80 °C. The shelf life of lyophilized form is 12 months at -20 °C/-80 °C. Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 °C for up to one week. Relevance: Conversion of pregnenolone and progesterone to their 17-alpha-hydroxylated products and subsequently to dehydroepiandrosterone (DHEA) and androstenedione. Catalyzes both the 17-alpha-hydroxylation and the 17,20-lyase reaction. Involved in sexual development during fetal life and at puberty. Reference: "Cytochrome P450c17 (steroid 17 alpha-hydroxylase/17,20 lyase): cloning of human adrenal and testis cDNAs indicates the same gene is expressed in both tissues."Chung B.-C., Picado-Leonard J., Haniu M., Bienkowski M., Hall P.F., Shively J.E., Miller W.L.Proc. Natl. Acad. Sci. U.S.A. 84:407-411(1987). Function: Conversion of pregnenolone and progesterone to their 17-alpha-hydroxylated products and subsequently to dehydroepiandrosterone (DHEA) and androstenedione. Catalyzes both the 17-alpha-hydroxylation and the 17,20-lyase reaction. Involved in sexual development during fetal life and at puberty.