Imject™ Maleimide-Activated BSA Spin Kit
Imject™ Maleimide-Activated BSA Spin Kit
Thermo Scientific™

Imject™ Maleimide-Activated BSA Spin Kit

The Thermo Scientific Imject Maleimide-Activated BSA Spin Kit contains stabilized, lyophilized Maleimide-Activated BSA (in PBS with stabilizer) and accessory components深入閱讀
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產品號碼Quantity
776675 x 2 mg
產品號碼 77667
價格 (HKD)
6,246.00
Each
新增至購物車
Quantity:
5 x 2 mg
價格 (HKD)
6,246.00
Each
新增至購物車
The Thermo Scientific Imject Maleimide-Activated BSA Spin Kit contains stabilized, lyophilized Maleimide-Activated BSA (in PBS with stabilizer) and accessory components to easily prepare ready-to-use immunogens for immunization. Our Imject Maleimide-Activated BSA enables conjugation of sulfhydryl-containing peptide antigens to immunogenic bovine serum albumin carrier protein for immunization and antibody production.

Features of Imject Maleimide-Activated BSA:

Optimized activation— specifications require that each lot is activated with 15 to 20 moles of sulhydryl-reactive maleimide per mole of BSA, ensuring consistently high levels of conjugation
Sulfhydryl-reactive— engineered for conjugating cysteine-containing peptide antigens to make effective immunogens for high-titer antibody production
Simple, rapid procedure— complete the hapten-carrier conjugation reaction in two hours to yield sufficient immunogen for several injections and booster immunizations of host animals
High-quality carrier protein— pure BSA (Fraction V) is activated using high-quality Thermo Scientific Sulfo-SMCC crosslinker and formulated to ensure high stability and consistent performance
Immunogenic and soluble— moderately immunogenic and highly soluble, BSA is useful for preparation of the primary immunogen or as an irrelevant hapten-carrier for antibody screening and immunoassays after using KLH as the carrier protein to generate the immune response against the hapten

Purified, carrier-grade BSA is rendered sulfhydryl-reactive by chemical modification with Sulfo-SMCC crosslinker, and the resulting maleimide-activated protein is then stabilized and lyophilized in phosphate buffer. Maleimide groups form covalent crosslinks with sulfhydryl (-SH) moieties on cysteine residues of peptides and other thiol-containing haptens. Several antigen molecules can be conjugated to each BSA molecule to increase their immunogenicity and likelihood of eliciting immunized animals to produce high-titer antisera to the epitopes of interest. Select from among several package sizes of activated BSA protein, or choose the complete conjugation kit that includes optimized buffers and trouble-free spin desalting columns.

Carrier proteins are large, complex molecules capable of stimulating an immune response upon injection. Successful production of antibodies specific to small antigens (i.e., peptides or drug compounds) requires that these haptens be covalently conjugated to a larger, more complex molecule (usually a protein) to make them immunogenic. Carrier proteins are chosen based on immunogenicity, solubility, and whether an adequate level of hapten-carrier conjugation can be achieved.

Bovine serum albumin (BSA) is a convenient protein for a variety of uses in the laboratory because, like most abundant plasma proteins, it is very stable and soluble. Numerous carboxyl groups account for the net negative charge (pI 5.1) of BSA and its high solubility (compare to positively-charged, cationized BSA). In addition, the 67kDa protein is sufficiently large and complex to be fully immunogenic. Consequently, BSA is a popular carrier protein for conjugation to haptens and other weak antigens to make them more immunogenic for the purpose of antibody production. If not used to prepare the primary immunogen, BSA is a useful carrier protein to make antigens more amenable to analysis (e.g., screening assays involving plate coating) of antibodies that were produced using KLH or another more immunogenic carrier protein.

More Product Data
Carrier protein activation and conjugation data for immunogen preparation

Related Products
Imject™ Maleimide-Activated BSA
For Research Use Only. Not for use in diagnostic procedures.
規格
DescriptionImject Maleimide-Activated BSA Spin Kit
FormatKit
Quantity5 x 2 mg
Product LineImject
Unit SizeEach
內容物與存放
Sufficient For: 5 conjugation reactions and complete immunogen preparations, each with up to 2 mg sulfhydryl-containing peptide
• Imject Maleimide-Activated BSA, 5 x 2 mg
• Imject Maleimide Conjugation Buffer, 30 mL
• Imject Purification Buffer Salts, 5 x 0.84 g
• Zeba Spin Desalting Columns, 7K MWCO, 2 mL, 5 columns

Store the Maleimide-Activated blue Carrier Protein at -20°C. Store remaining components at 4°C.

常見問答集 (常見問題)

What do I need to consider when designing a peptide for antibody production?

We recommend that hydrophobic residues comprise 50% or less of all the residues in your sequence. Make sure there is at least one charged residue for every five amino acids: this is generally known to enhance the solubility of the peptide. Peptides (compared to polypeptides, which fold and bury the hydrophobic amino acids) are too small to fold, so just a few hydrophobic amino acids may leave them insoluble.

Other guidelines include:
Peptides containing multiple Cys, Met, and Trp can be hard to synthesize.
Some sequences are problematic in solid-phase peptide synthesis or cleavage and are best avoided; these include Asp-Pro sequences or stretches of amino acids that require bulky protecting groups on their side chains during synthesis.
Glycine is often good for antigenicity as it has only a hydrogen side chain; this allows for complete rotation.
Please note that we offer a Custom Antibody Production service (https://www.thermofisher.com/us/en/home/life-science/antibodies/custom-antibodies/custom-antibody-production.html) that includes the use of our proprietary Antigen Profiler and Antigen Preparation tool (https://www.thermofisher.com/us/en/home/life-science/antibodies/custom-antibodies/custom-antibody-production/antigen-profiler-antigen-preparation.html).

What is the optimal peptide length for antibody production?

Most peptide antigens range in length from 12 to 16 residues and are relatively easy to synthesize. Peptides of 9 residues or shorter have been effective antigens for antibody production, but peptides longer than 16 amino acids may contain several epitopes and form secondary structures. Peptides in excess of 18 residues begin to present more synthetic challenges. Before you synthesize your peptide, we recommend doing a BLASTP search using your peptide sequence. This is to make sure that the peptide is not homologous or identical to a sequence in a completely unrelated protein in the host animal.

Please note that we offer a Custom Antibody Production service (https://www.thermofisher.com/us/en/home/life-science/antibodies/custom-antibodies/custom-antibody-production.html) that includes the use of our proprietary Antigen Profiler and Antigen Preparation tool (https://www.thermofisher.com/us/en/home/life-science/antibodies/custom-antibodies/custom-antibody-production/antigen-profiler-antigen-preparation.html).

What happens if antibodies are stored improperly?

Improper storage of antibodies can lead to:
- Degradation: Loss of activity and specificity
- Aggregation: Formation of precipitates or clumps
- Reduced performance: Poor results in assays or experiments

Find additional tips, troubleshooting help, and resources within our Antibodies and Immunoassays Support Center.

What do antibody pair kits contain, how many samples can I process, and how can I find a list of antibody pair kits by target?

Antibody pair kits contain capture antibody, detection antibody, recombinant standard and HRP conjugate. Each contains enough reagents to process forty 96-well plates. A list of Antibody Pair Kits (https://www.thermofisher.com/us/en/home/life-science/protein-biology/protein-assays-analysis/elisa/antibody-pair-kits.html) is available by target.

Find additional tips, troubleshooting help, and resources within our Antibodies and Immunoassays Support Center.

What do Reagent Sets contain, how many samples can I process, and how can I check if a Reagent Set is available for my target?

Reagent Sets contain Capture Antibody, Detection Antibody, Recombinant Standard, HRP Conjugate, TMB Substrate and Stop Solution. Each contains enough reagents to process five 96-well plates. Reagent Sets are included in the main list of ELISA (https://www.thermofisher.com/us/en/home/life-science/protein-biology/protein-assays-analysis/elisa/antibody-pair-kits.html) kits (search by “Reagent Set”).

Find additional tips, troubleshooting help, and resources within our Antibodies and Immunoassays Support Center.