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(chǔ)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(xiàng):
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Transmembrane reductase that uses ascorbate as an electron donor in the cytoplasm and transfers electrons across membranes to reduce monodehydro-L-ascorbate radical in the lumen of secretory vesicles. It is therefore involved the regeneration and homeostasis within secretory vesicles of ascorbate which in turn provides reducing equivalents needed to support the activity of intravesicular enzymes (Probable).
基因功能參考文獻(xiàn):
the functional and structural roles of the EM3 residues and several adjacent residues (residues 70-85) in the bovine cytochrome PMID: 21401125
Cyb561 from chromaffin cell membranes has high and low potential hemes as demonstrated by electron paramagnetic resonance and circular dichroism. PMID: 12438163
The pH-induced alteration and the destruction of heme in cytochrome b561 under oxidative conditions may play a significant role in the amplification of oxidative stress in catecholaminergic neurons. PMID: 12653566
amino-terminal peptide showed that the initial Met residue was acetylated but there was no other posttranslational modification in the amino-terminal region PMID: 12768340
Purified cytochrome b561 reconstituted into an artificial phospholipid bilayer is capable of transferring electron equivalents across the membrane to support monooxygenase activity of soluble extravesicular dopamine beta-hydroxylase. PMID: 14769875
Raman data indicate that the two heme b centers of CYB561 adopt a six-coordinated low-spin state, in both reduced and oxidized forms. PMID: 14999009
importance of the two well-conserved Cys residues near the intravesicular heme center PMID: 16428304
a detailed characterization of cyt b561 using electron paramagnetic resonance (EPR) and optical spectroscopy on the wild-type and mutant forms of the cytochrome expressed in insect cells PMID: 17602662
These results indicate that His92 can be considered part of the b(H) heme center, and His110 part of the b(L) heme center, in adrenal cyt b(561). PMID: 18501187