N-(t-butyl ester-PEG4)-N-bis(PEG4-Propargyl) is a trifunctional PEG linker that combines a t-butyl ester with two terminal alkynes. The alkynes can be applied in copper-click chemistry with azides to form stable triazole linkages with a target molecule, while the t-butyl ester can be deprotected and reacted with amines or alcohols to form amides or esters.
N-(t-butyl ester-PEG4)-N-bis(PEG4-Propargyl) is a trifunctional PEG linker that combines a t-butyl ester with two terminal alkynes. The alkynes can be applied in copper-click chemistry with azides to form stable triazole linkages with a target molecule, while the t-butyl ester can be deprotected and reacted with amines or alcohols to form amides or esters.
Mastitis is the single most costly disease of dairy cattle resulting in the reduction of milk yield and quality. The inflammation of the udder is mainly caused by infection of various bacteria. One of such mastitis bacteria, Streptococcus agalactiae, is highly infectious and causes mainly subclinical infections, which are not identified by the herdsman. As a result, S. agalactiae can spread widely within a herd, causing immediate loss due to reduced milk. S. agalactiae is a gram-positive bacteria belonging to the Group B streptococci. Traditional cultural identification of S. agalactiae is based on S. agalactiae being beta-hemolytic as well as presence of group B Lancefield antigen and by its ability to hydrolyze sodium hippurate.
Streptococcus agalactiae TaqMan PCR Kit, 100 reactions
Streptococcus agalactiae TaqMan PCR Probe/Primer Set and Controls, 100 reactions
For research use only and NOT intended for in vitro diagnostics.
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Storage Conditions and Product Stability
All kit components can be stored for 2 years after the date of production without showing any reduction in performance.
All kit components should be stored at -20°C upon arrival. Repeated thawing and freezing (> 2 x) of the Master Mix and Positive Control should be avoided, as this may affect the performance of the assay. If the reagents are to be used only intermittently, they should be frozen in aliquots.
| Component | Cat. TM30650 (100 preps) | Cat. TM30610 (100 preps) |
|---|---|---|
| MDx TaqMan 2X PCR Master Mix | 2 x 700 μL | – |
| S. agalactiae Primer & Probe Mix | 280 μL | 280 μL |
| S. agalactiae Positive Control | 150 μL | 150 μL |
| Nuclease-Free Water (Negative Control) | 1.25 mL | 1.25 mL |
| Product Insert | 1 | 1 |
The CloneSizer 100 bp DNA Ladder is prepared to ensure quality and batch-to-batch consistency. Our CloneSizer contains fourteen discrete fragments ranging from 100 bp to 2000 bp in 100 bp increments, double intensity reference bands at 500 and 1000 bp and an additional 2686 bp (pUC19) reference band for easy clone identification.
Contents:
1mL of premixed DNA ladder (0.5µg/10µL) in loading buffer (10mM EDTA, 10% glycerol, 0.015% bromophenol blue, and 0.17% SDS).
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CloneSizer 100 bp DNA Ladder (Cat# 11600) – 100 loads
Ladder Properties:
| Fragment | Size (bp) | Mass (ng) |
| 1 | 2686 | 72 |
| 2 | 2000 | 53 |
| 3 | 1500 | 41 |
| 4 | 1200 | 42 |
| 5 | 1000 | 56 |
| 6 | 900 | 30 |
| 7 | 800 | 29 |
| 8 | 700 | 25 |
| 9 | 600 | 25 |
| 10 | 500 | 52 |
| 11 | 400 | 19 |
| 12 | 300 | 20 |
| 13 | 200 | 19 |
| 14 | 100 | 17 |
Recommended Use:
Mix thoroughly. For best results, load 10µL of DNA ladder per well. For precise mass determination with a densitometer, stain gel after electrophoresis using 0.5µg/mL ethidium bromide for 30-40 minutes. The table above shows the size and mass for each band based on 10µL ladder per well.
Storage:
Stable at room temperature. For longer term storage, -20°C is recommended.
This ladder was standardized using 10µL of DNA per lane on a 0.8 cm thick, 13 x 15 cm, 1.0% agarose gel run in TAE buffer.
