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.
One gap junction consists of a cluster of closely packed pairs of transmembrane channels, the connexons, through which materials of low MW diffuse from one cell to a neighboring cell. Involved in tracer coupling between horizontal cells of the retina. May play a role in the regulation of horizontal cell patterning.
基因功能參考文獻:
Study showed that mouse horizontal cells establish a coupled dendritic network by Cx57 and two coupled axon terminal networks, one made of Cx50 and the other made of Cx57 channels PMID: 25823610
Cx57 positive cells are clustered into small groups to form different patterns in the olfactory epithelium; within the sensory epithelial layer, hybridization signal is visible in sublayers containing cell bodies of basal cells and olfactory neurons. PMID: 21840349
connexin genes Gjd2 coding for mCx36, Gjc1 coding for mCx45 and Gja10 coding for mCx57 in the mouse, a subset of 4 connexin genes, including the unique GJA9 (Cx59) and GJA10 (Cx62), could be detected at least as transcript isoforms in the human retina. PMID: 20979653
The study confirmed the expression of Cx57 in the horizontal cells of the retinal outer plexiform layer, the cerebellum and pre-cerebellar. PMID: 20849935
Cx57 is the first connexin identified in mammalian horizontal cells and the first connexin whose expression is apparently restricted to only one type of neuron. PMID: 15147297
These data thus provide the first quantification of mouse horizontal cell receptive field size and confirm the unique role of Cx57 in horizontal cell coupling and physiology. PMID: 16820008
Decreased oocyte-granulosa cell gap junction communication and connexin expression in a type 1 diabetic mouse model. PMID: 18829945
study shows for the first time the detailed location of connexin57 expression within mouse horizontal cells PMID: 19177557
the open channel probability of Cx57 gap junctions can be modulated by pH(i) with very high efficiency in the physiologically relevant range and may explain pH-dependent regulation of cell-cell coupling in horizontal cell in the retina PMID: 19433576
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亞細胞定位:
Cell membrane; Multi-pass membrane protein. Cell junction, gap junction.
蛋白家族:
Connexin family, Alpha-type (group II) subfamily
組織特異性:
Low levels were detected in skin, heart, kidney, testis, ovary, intestine. Expression not detected in brain, sciatic nerve or liver. According to PubMed:15147297 expression is detected only in horizontal cells in the inner nuclear layer of the retina and