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商品編號


016-650-084



品牌


Jackson



公司


Jackson ImmunoResearch Laboratories



公司分類(lèi)


Streptavidin and Conjugates



Conjugate

Alexa Fluor? 790


Unit

0.5 mg


Product

Streptavidin


產(chǎn)地

美國

商品信息

Steptavidin, a bacterial protein isolated from
Streptomyces avidinii
, is similar to egg-white avidin in its
ABI
lity to bind biotin, and has been used as a replacement for egg-white avidin because of its more favorable chemical properties.
Conjugates of streptavidin are recommended for use with Biotin-SP-conjugated antibodies and Biotin-SP-conjugated ChromPure proteins.
Physical State:
Freeze-dried solid
Storage:

Store freeze-dried powder at 2-8°C. When ready to use, rehydrate with indicated volume of d. water and centrifuge if not clear. Product is stable for about 6 weeks at 2-8°C as an undiluted liquid. Prepare working dilution fresh each day. For extended storage after rehydration, add an equal volume of glycerol (ACS grade or better) for a final concentration of 50%, and store at -20°C as a liquid. Note: after the addition of glycerol, the concentration of protein and buffer salts is one-half of the original. Alternatively, aliquot and freeze the product at -70°C or below in the absence of glycerol. Avoid repeated freezing and thawing.
Expiration date:
one year from date of rehydration. However, the expiration date may be extended if the product is stored according to the recommendation and the test results are acceptable for its intended use.
Buffer:
0.01M Sodium Phosphate, 0.25M NaCl, pH 7.6
St
ABI
lizer:
15 mg/ml Bovine Serum Albumin (IgG-Free, Protease-Free)
Preservative:
0.05% Sodium Azide
Suggested Working Concentration or Dilution Range:
Western Blot:- 0.5-2 ?g / ml
Histo-/Cyto-Chemistry:-0.5-2 ?g / ml
Dilution factors are presented in the form of a range because the optimal dilution is a function of many factors, such as antigen density, perme
ABI
lity, etc. The actual dilution used must be determined empirically.
Alexa Fluor? 790
Amax:
792
Emax:
803nm
Alexa Fluor? 680 and Alexa Fluor? 790 conjugates are used for very sensitive Western blots,
ELISA
s, and multiplexing arrays. Alexa Fluor? 680 conjugates are excited with a peak around 684 nm and fluoresce with a peak around 702 nm. Alexa Fluor? 790 conjugates are excited with a peak around 792 nm and fluoresce at a peak around 803 nm. They are the best choice for highly sensitive single or double labeling with fluorescence imaged in a
LI-COR
Odyssey? imager.