logo
logo
Streptavidin (FITC)

Cat no: S7973-89F

Streptavidin (FITC)

Streptavidin (MW ~66kD) binds specifically with biotin (244D). It is derived from the bacterium Streptomyces avidinii and bears a remarkable similarity to chicken egg-white avidin both in three-dimensional structure and its ability to bind biotin with extremely high affinity (Kd=10e-15M). It is a tetrameric protein capable of binding up to 4 biotin molecules. Unlike avidin, Streptavidin is non-glycosylated and is essentially neutral in charge, whereas avidin (pH 10.5) is basic at neutral pH. Because of this, streptavidin has considerably less non-specific binding resulting in less background. It has replaced avidin as the reagent of choice for most applications where protein interactions may cause background.\n\nSource: Streptomyces avidinii\n\nABSORBANCE RATIO (A 495 nm/A 280 nm) = 1.1\nMOLAR F/P RATIO = 4.152\n\nAPPLICATIONS:\nSuitable for the detection or localization of biotinylated biomolecules. \nOptimal dilution to be determined by the researcher.\n\nStorage:\nStore at 4 degrees C. Avoid exposure to light.

Prices direct from United States Biological

Quick response times

Exclusive Biosave savings/discounts

SPECIFICATIONS

Catalog Number

S7973-89F

Size

1mg

Form

Supplied as a liquid in PBS, pH 7.4, containing 1% bovine serum albumin, 40% glycerol and 0.05% sodium azide. Labeled with FITC.

Purity

Purified by molecular sieving and is completely free of unbound FITC.

Read more on Supplier website
Advertisehere
MtoZ Horizontal banner
MtoZ Biolabs

Latest promotion FROM:

MtoZ Biolabs
View promotion

Latest promotions

Spend less time on DNA cleanup so you can do more science. The MSB Spin PCRapace is the fastest way to purify your DNA from PCR, restriction digestion, and...

New brilliant antibodies, and new lower prices!For flow cytometry reagents in general, \"bright is better.\" The violet-excitable BD Horizon™ BV421 and...

As an incentive to qualify our BSA, we are offering a 20% discount when you purchase your first 100g, 500g or 1000g of any grade of Bovine Serum Albumin....

It is not every day that you are given something for nothing. We are giving away additional spectrophotometer software.Cecil Instruments have enhanced the...

We're so sure that you'll prefer Cayman Assay kits over your present brand that we're willing to give you a free assay kit to prove it!

10% Discount on 2 Rabbit Polyclonal Antibody Service. With over 20 years experience, SDIX has developed into the premier US custom antibody producer,...

For the past decade scientists have extensively used ATS secondary toxin conjugates to make their own targeted toxins for in vitro use.The ability to combine...

Did your supplier increase the price of Fetal Bovine Serum? Did they substitute the US Origin with USDA? Well say no more! Innovative Research is still...

Bulk Cytokines with Custom Vialing.20 - 50% off cytokines, growth factors, chemokines and more...For a limited time Cell Sciences is offering substantial...

Jenway’s 73 series spectrophotometer range provides four models with a narrow spectral bandwidth of 5nm and an absorbance range of –0.3 to 2.5A,...

Are you planning to have a customised antibody made for your research?Since 2000, Everest has been producing a catalog containing thousands of affinity...