Western blotting allows visualization of antibodies directed against specific viral proteins.
- Available for SIV, HTLV I/II, HIV and Helicobacter pylori
- Easy to use, complete kits containing everything needed for antibody detection
- Nitrocellulose strips available for use with your own detection system*
*for SIV and HTLV I/II

SIV BLOT
SIV STRIPS

Simian Immunodeficiency Virus (SIV) is the most closely related lentivirus to Human Immunodeficiency (HIV), therefore, SIV infection in monkeys has become the best animal model for studying the pathogenesis and efficacy of vaccines against HIV infection in humans. The SIV Western Blot assay is a qualitative enzyme immunoassay for the in vitro detection of antibodies to SIV in serum or plasma. 

HTLV BLOT 2.4* 
HTLV I/II STRIPS

The MP Biomedicals ® HTLV BLOT 2.4 is a qualitative enzyme immunoassay for detecting antibodies to HTLV-I and HTLV-II in human serum or plasma. The HTLV blot 2.4 incorporates MTA-1, a unique HTLV-1 envelope recombinant protein (rgp46-I), K55, a unique HTLV-II envelope recombinant protein (rgp46-II) and GD21, a common yet specific HTLV-I and HTLV-II epitope recombinant protein on the blot. This test is supplied for research purposes only. 

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HELICO BLOT 2.1*

The MP Biomedicals ® HELICO BLOT 2.1 Western blot kit is a qualitative assay for the detection of IgG antibodies to Helicobacter pylori (H. pylori) in human serum or plasma. In addition to bacterial lysate there is a recombinant antigen with high predictive value for the indication of current H. pylori infection. The assay is intended for use as a serological test for the detection of both current and past infection with H. pylori. Unlike an ELISA, the HELICO BLOT 2.1 allows for the detection of antibodies to specific proteins of H. pylori, including antigens associated with pathology such as CagA and VacA. This kit is supplied for research purposes only. 

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HIV-1 BLOT 1.3 * 

The MP Biomedicals ® HIV-1 BLOT 1.3 is a qualitative enzyme immunoassay for the detection of antibodies to HIV-1 in human serum or plasma. The assay supplied for research use only and is not intended for use in diagnosis and prognosis of disease. 

A.   Problem

While working with proteins and nucleic acids, it is very often necessary to eliminate small molecular weight substances such as reducing agents [dithiothreitol (DTT), 2-mercaptoethanol (BME), urea], un-reacted crosslinking or labeling reagents (sulfo-SMCC, biotin) and preservatives (sodium azide, thimerosal) that might interfere in subsequent steps of the experimental protocol. Methods such as dialysis and electro-elution (for extraction of nucleic acids from gels) have long been used to purify proteins and nucleic acids. However, these traditional methods are riddled with numerous problems which may lead to tremendous time consumption, sample loss, contamination and high sample dilutions requiring further concentration.

B.   Solution

DiaEasy™ Dialyzer tubes product line offers a solution to most of these issues. Our Dialysis tubes come in easy to use sets of 10, 25 and 100 tubes each, catering to different molecular weight cut-offs of 1 kDa, 3.5 kDa, 6-8 kDa, 12-14 kDa, 25 kDa and 50 kDa for different sample volumes ranging from 10 µl to 20 ml.  These sets also contain floating racks and/or supporting trays for convenient handling of the tubes in the exchange buffer and electroelution. The combination of DiaEasy™ Dialyzer tubes and the electroelution accessories provides a unique tool for extraction of any protein, protein-protein, or protein DNA complexes from non-denaturing and denaturing (SDS) polyacrylamide gels, and for extraction of oligonucleotides, RNA, and DNA from both polyacrylamide and agarose gels. The DiaEasy™ tube’s membranes are ultra-clean, sulfur and heavy metal free and EDTA treated which makes the harvested proteins and nucleic acids suitable for molecular biology experiments. These DiaEasy™ tubes allow rapid, secure and simple loading and recovery. They are very high performance dialysis tubes and are the most convenient, user friendly dialysis system on the market. We offer these tubes with related accessories like supporting trays and floating racks for easy use.

C.   Applications of DiaEasy™ Dialyzer tubes

• •      Dialysis or buffer exchange of six different samples volumes: 10-250 µl, 50-800 µl, 0.1-3 ml, 10 ml, 15 ml and 20 ml.
• •      High throughput dialysis (using a single beaker with several DiaEasy™ tubes on one floating pad).
• •      Preparation of protein samples for MALDI-MS.
• •      Samples concentration.
• •      Large-scale protein dialysis such as antibodies and recombinant protein purification.
• •      Peptide dialysis as small as 10 amino acids.
• •      Virus-particle purification.
• •      Removal of contaminating micro molecules.
• •      Tissue culture extracts purification.
• •      Removal of salts, surfactants, solvents & detergents.
• •      Complex formation studies (protein-protein, protein-DNA and protein-RNA).
• •      pH and buffer adjustment of sample solution, protein extract or cell extract.
• •      2D gel dots extraction.
• •      Extraction of proteins, RNA, DNA or oligonucleotides (>20 nt) from polyacrylamide, agarose or any gel matrix in any running buffer.  

D.   Advantages of DiaEasy™ Dialyzer tubes

• •       Most convenient, efficient and user-friendly dialysis sets on the market.
• •       Single step efficient dialysis saves time and eliminates the need for additional equipment.
• •       Samples pass through the tubes once, eliminating repeated dilutions and concentrations.
• •       Single step decreases the risk of potential protein aggregation and precipitation and ensures high activity retention.
• •       Elution times are as low as 10 minutes and range upto 150 minutes based on multiple criteria including the sample content, size and volume.
• •       These sets are HTP compatible.

E.   Typical Recovery Rates

F.   Advantages of DiaEasy™ Dialyzer tubes over conventional dialysis methods:

Specification

Throughput: 400 tests/hour, 800 test with ISE

Measuring wavelength: 340 to 800, 12 wavelengths invariable.

Assay tapes: End point, Kinetics, Fixed time, Immunoturbidimetry, Monochromatic, Bi-chromatic & Multi-standard Analysis, Linearity & Nonlinearity, Calibration, Single & Dual Reagents can be used

Calibration Mode: Linear (one-point, two-point and multi-point), Logit-log4p, logit-log5p Spine, Exponential, Polynomial, Parabola.

Light source: Halogen lamp 6v/10w, life span ≥3000 hours

Cuvette: light pass length: 6mm

Reaction disk: Turntable

Reaction temperature: 37℃± 0.1 ℃

Sample Volume: 2 to 35μL (in steps of 0.1μL)

Power supply: 220V AC,50/60 Hz

Price: 23 500 Euro

More: Biochemistry Analyzer