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Written by / Agency / Source: AnaSpec, Inc.

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AnaSpec Introduces New Line of HABA-Biotin Quantitation Kits - AnaSpec has introduced a new line of HABA Biotin Quantitation Kits. They provide a convenient method for estimating the molar ratio of biotin to protein on biotinylated conjugates and also be used to quantitate the biotin concentration in a solution
AnaSpec Introduces New Line of HABA-Biotin Quantitation Kits

 

NewswireToday - /newswire/ - San Jose, CA, United States, 2008/01/22 - AnaSpec has introduced a new line of HABA Biotin Quantitation Kits. They provide a convenient method for estimating the molar ratio of biotin to protein on biotinylated conjugates and also be used to quantitate the biotin concentration in a solution.

   
 
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Available in two sizes: 120 Assays 72096-120 (120 assays in a 96-well format or 25 assays in a cuvette format)
500 Assays 72096-500 (500 assays in a 96-well format or 100 assays in a cuvette format)

Biotin and avidin (or streptavidin) bind non-covalently with a higher binding affinity than most antigen-antibody interactions. This very tight binding makes labeling proteins with biotin a useful tool for applications such as affinity chromatography and immunoanalytical assays.

The assay utilizes the observation that HABA (4¡¦-hydroxyazobenzene-2-carboxylic acid) shows dramatic spectral changes when it binds to avidin. Free HABA has an absorption peak at 348 nm, while the HABA/avidin complex has strong absorption at 500 nm. Since the affinity between HABA and avidin is relatively weak (Kd=5.8 x 10-6 M) compared to the affinity between biotin and avidin (Kd=1 x 10-15 M), biotin can easily replace HABA from the HABA/avidin complex, resulting in a decrease of absorption at 500 nm. Avidin and HABA at an optimal ratio are included in the assay kit. The kit has a linear range of 2 to 16 ƒÝM.

About AnaSpec, Inc.

AnaSpec, Inc. is a leading provider of integrated proteomics solutions to pharmaceutical, biotech, and academic research institutions throughout the world. With a vision for innovation through synergy, AnaSpec focuses on three core technologies: peptides, detection reagents (dyes, assay kits, & antibodies), and combinatorial chemistry.

 
 
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Written by / Agency / Source: AnaSpec, Inc.

 
 

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AnaSpec Introduces New Line of HABA-Biotin Quantitation Kits

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Publisher Contact: Ping Yang 
1-408-452-5055 ping[.]anaspec.com
 
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