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.
Zona pellucida sperm-binding protein 2; Zona pellucida glycoprotein 2; Zp-2; Zona pellucida protein A; [Cleaved into: Processed zona pellucida sperm-binding protein 2] ZP2 ZPA
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:
Liquid or 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(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.
Component of the zona pellucida, an extracellular matrix surrounding oocytes which mediates sperm binding, induction of the acrosome reaction and prevents post-fertilization polyspermy. The zona pellucida is composed of 3 to 4 glycoproteins, ZP1, ZP2, ZP3, and ZP4. ZP2 may act as a secondary sperm receptor.
基因功能參考文獻:
Mutations in ZP2 and ZP3 have dosage effects which can cause female infertility in humans. PMID: 28646452
ZP2(51-149) sperm-binding domain is necessary for human gamete recognition and penetration through the zona pellucida. PMID: 24934154
Studies indicate that eggs from mice lacking an ortholog of ZP2 do not contain a zona pellucida (ZP), and the mice are completely infertile due to a severely reduced number of ovulated eggs in their oviducts. PMID: 23417405
observed sequence variations in exons of ZP2 gene in women with infertility of unknown origin who exhibit abnormal zona pellucida; sperm-ovum interactions appear relatively normal in these patients [CASE REPORTS] PMID: 22889493
Of all zona pellucida (ZP) proteins, recombinant human ZPA demonstrates the highest binding activity toward acrosin PMID: 15950651
Exposure of sperm to ZP proteins promoted acrosomal exocytosis and changed motility patterns. PMID: 16407501
ZP proteins were detected in both the oocyte and the granulosa cells as early as the primordial follicle stage in the human. The detection of ZP proteins in the quiescent primordial follicle suggests that these proteins have been present since oogenesis. PMID: 18033806
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亞細胞定位:
[Processed zona pellucida sperm-binding protein 2]: Zona pellucida.; Cell membrane; Single-pass type I membrane protein.