E. coli biotin ligase
(BirA) is highly specific in covalently attaching biotin to the 15 amino
acid AviTag peptide. This recombinant protein was biotinylated in vivo
by AviTag-BirA technology, which method is BriA catalyzes amide linkage
between the biotin and the specific lysine of the AviTag.
The tag type will be
determined during production process. If you have specified tag
type, please tell us and we will develop the specified tag
preferentially.
產(chǎn)品提供形式:
Lyophilized powder Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
復(fù)溶:
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℃/-80℃. Our default final
concentration of glycerol is 50%. Customers could use it as reference.
儲存條件:
Store at -20°C/-80°C upon receipt, aliquoting is necessary for
mutiple use. Avoid repeated freeze-thaw cycles.
保質(zhì)期:
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.
貨期:
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our
proteins are default shipped with normal blue ice packs, if you
request to ship with dry ice, please communicate with us in advance
and extra fees will be charged.
注意事項:
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Bifunctional enzyme involved in steroid-hormone metabolism and cholesterol biosynthesis. Catalyzes the NADP(H)-dependent reduction of estrogens and androgens and regulates the biological potency of these steroids. Converts estrone (E1)to a more potent estrogen, 17beta-estradiol (E2). Converts moderately dihydrotestosterone (DHT) to their inactive forms 5a-androstane-3beta,17b-diol and 5alpha-androstane-3alpha,17beta-diol. Does not metabolize progesterone. Additionally, participates in the post-squalene cholesterol biosynthesis, as a 3-ketosteroid reductase.
基因功能參考文獻:
The ENU-induced rudolph mouse mutant has defects in both central nervous system and skeletal development, and carries a mutation of Hsd17b7. These developmental defects appear to be a consequence of abnormalities in Hedgehog signaling. PMID: 21912524
a recessive mutation, rudolph, that causes abnormal forebrain development was identified in hydroxysteroid (17-beta) dehydrogenase 7 gene, an enzyme necessary for cholesterol biosynthesis. PMID: 21912524
Hsd17b7 activity is essential for fetal de novo cholesterol synthesis and for neuroectodermal survival and cardiovascular differentiation in early mouse embryos PMID: 20185768
Comparison of the promoter region of the human and murine gene. PMID: 15862973
The identified proximal promoter regions of both human and murine HSD17B7 genes contain multiple transcription factor binding sites and show strong similarity to cholesterogenic genes. PMID: 16356630
Results provide unequivocal evidence for a role of 17beta-hydroxysteroid dehydrogenase type-7 in cholesterol biosynthesis. PMID: 16901934
Data show that prolactin receptor-associated protein/17beta-hydroxysteroid dehydrogenase type 7 plays an important role in fetal survival and embryonic development in mice. PMID: 18669642