Whole IgG antibodies are isolated as intact molecules from antisera by immunoaffinity chromatography. They have an Fc portion and two antigen binding Fab portions joined together by disulfide bonds and therefore they are divalent. The average molecular weight is reported to be about 160 kDa. The whole IgG form of antibodies is suitable for the majority of immunodetection procedures and is the most cost effective.
Usage Physical State: Freeze-dried solidStorage and Rehydration: Store freeze-dried solid at 2-8°C. Rehydrate with the indicated volume of dH2O (see product specification sheet) and centrifuge if not clear. Prepare working dilution on day of use. Product is stable for about 6 weeks at 2-8°C as an undiluted liquid.Extended Storage after Rehydration: Aliquot and freeze at -70°C or below. Avoid repeated freezing and thawing. Alternatively, add an equal volume of glycerol (ACS grade or better) for a final concentration of 50%, and store at -20°C as a liquid. Expiration date: one year from date of rehydration. The expiration date may be extended if test results are acceptable for the intended use.
Purity:The antibody was purified from antisera by immunoaffinity chromatography using antigens coupled to agarose beads. Buffer: 0.01M Sodium Phosphate, 0.25M NaCl, pH 7.6 Stabilizer:15 mg/ml Bovine Serum Albumin (IgG-Free, Protease-Free) Preservative:None(Warning:Use of sodium azide as a preservative will substantially inhibit the enzyme activity of horseradish peroxidase.) Suggested Working Concentration or Dilution Range:1:500 - 1:5,000 for immunohisto/cytochemistry 1:5,000 - 1:100,000 for ELISA and Western blotting with chromogenic substrates 1:10,000 - 1:200,000 for Western blotting with ECL substratesDilution factors are presented in the form of a range because the optimal dilution is a function of many factors, such as antigen density, permeability, etc. The actual dilution used must be determined empirically.
ConjugateHorseradish peroxidase (HRP) conjugates are prepared by a modified Nakane and Kawaoi procedure (J. Histochem. Cytochem. 1974. 22, 1084). Peroxidase conjugates are commonly used for immunohistochemistry, Western blotting, and ELISA. Affinity-purified anti-horseradish peroxidase and conjugates are available for detection of horseradish peroxidase antigen or for signal amplification of HRP-containing reagents. For immunostaining of mammalian cells, an advantage of using anti-horseradish peroxidase is reduced background, since the antibody does not recognize the endogenous peroxidase-like enzymes found in those cells.
Images & ReferencesThis product is for in vitro research use only. It is not a medical device and it is not intended for diagnostic or therapeutic purposes.
Integrated DNA Technologies sells short strands of DNA called oligonucleotides. In order to better understand how these are useful, you'll have to know a bit about DNA itself.
DNA is "the blueprint for life" and encodes instructions for all of life's processes. DNA is a complex long thin molecule (strand) that is made from 4 possible building blocks called "bases". These bases are called Adenine, Cytosine, Guanine and Thymine, and the precise order of these bases is a code for information. In living organisms, DNA strands can be millions of bases long and therefore contain huge amounts of information. This complexity is responsible for the vast complexity and diversity of life on earth.
The way that one strand of DNA specifically binds a second strand of DNA allows scientists to use short DNA strands (oligos) as research tools. A short synthetic piece of DNA (usually around 20 bases long) can be used to bind or find its matching sequence even in a complex mixture of millions of unrelated pieces of DNA. It is this unique fact that allows researchers to decode and study the genetic makeup of any living organism.
Using new oligo-based technologies, a revolution is underway where we are beginning to catalog the complete genetic makeup of hundreds of living things, ranging from bacteria to humans. The human genome alone contains over 3 billion bases of DNA, so projects of this kind tend to be very complex and often take years to complete.
Scientists often start the research knowing the DNA sequence for the organism that they are interested in studying. Given a known DNA sequence, they can easily design a short oligo that can be used to perform a variety of tasks. It is this short single-stranded DNA that the researcher orders from IDT. Living systems don't discriminate DNA that is synthesized chemically from DNA taken directly from an organism, allowing researchers to use IDT's custom made oligonucleotides as if they had existed naturally.
IDT manufactures the oligo using chemical DNA synthesis machines designed and built in-house. We've refined the process to the point where we can receive an order as late as 1:00pm and have the desired oligo in the researcher's hands the next morning. Our customers range from small university labs of only a few scientists to global pharmaceutical companies, and everything in between.
Some common uses for oligos include:
Diagnostic tests for genetic diseases, like breast cancer or cystic fibrosis.
Diagnostic tests for infectious diseases, like Hepatitis or AIDS.
Research to discover new drugs or treatments for a variety of diseases.
Producing safer and more plentiful agricultural products.
IDT is the largest manufacturer of custom oligo products in the US today. We became the industry leader in this competitive field by maintaining the highest standards of quality, service, and technical know-how