The GetClone™ PCR Cloning Vector II is a positive selection system for high efficiency cloning of blunt end DNA or amplicons. This cloning vector contains a lethal gene which can be disrupted by ligation of a blunt end DNA insert into the cloning site. Only colonies with inserted vectors are able to propagate, eliminating the additional needs of IPTG and X-Gal for blue/white screening. This cloning vector includes ampicillin and kanamycin resistance genes that can meet the needs of most users.
Detail
Description
The GetClone™ PCR Cloning Vector II is a positive selection system for high efficiency cloning of blunt end DNA or amplicons. This cloning vector contains a lethal gene which can be disrupted by ligation of a blunt end DNA insert into the cloning site. Only colonies with inserted vectors are able to propagate, eliminating the additional needs of IPTG and X-Gal for blue/white screening. This cloning vector includes ampicillin and kanamycin resistance genes that can meet the needs of most users.
Features
Cloning efficiency greater than 90%
IPTG and X-Gal are not required
Accepts a wide range of insert/vector ratios 0.5:1 to 12:1
Accepts insert size from 6 bp to 11 kb
The phosphorylation of PCR fragments is not required
Accepts blunt end amplicon or DNA fragment (not for sticky ends)
Tau proteins are abundant in neurons of the central nervous system, and function in microtubule stability and organization. Defects in Tau functioning and aggregation of these proteins have been clinically linked to a number of neurodegenerative disorders including Alzheimer’s disease, Parkinson’s disease, Pick’s disease (PiD), progressive supranuclear palsy (PSP), cortical basal degeneration (CBD), and frontotemporal dementia with parkinsonism linked to chromosome 17 (FTDP-17).
Mastitis is the single most costly disease of dairy cattle resulting in the reduction of milk yield and quality. The inflammation of the utter is mainly caused by infection of various bacteria. Streptococcus uberis is a gram-positive bacterium that is known worldwide as an environmental pathogen responsible for a high proportion of cases of mastitis in lactating cows and is also the predominant organism isolated from mammary glands during the non-lactating period. Often it is resistant to treatment and causes persistent high somatic cell counts without clinical mastitis.
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.
For the determination of Escherichia coli in drinking water and its source water by multiple tube fermentation method.
Principle and Interpretation
MUG permits the rapid detection of Escherichia coli when the medium is observed for fluorescence using a UV light. MUG is hydrolyzed by the enzyme β-glucuronidase which is produced by E. coli to yield a fluorescent end product 4- methylumbelliferone. Trypticase provides the essential nutrients. Lactose is the fermentable carbohydrate. Sodium chloride maintains the osmotic equilibrium. The medium has a strong buffering system to control the pH in the presence of fermentative action. The bile salts inhibit gram-positive bacteria especially the Bacillus species and faecalStreptococci.
Formulation
Ingredients
/liter
Trypticase or tryptose
20 g
Bile salts No. 3
1.5 g
Lactose
5 g
K2HPO4
4 g
KH2PO4
1.5 g
NaCl
5 g
4-methylumbelliferyl-β-D-glucuronide (MUG)
50mg
pH6.9±0.2 at 25°C
Preparation
Weigh 37g of dry powder of this product, add 1L of distilled water or deionized water, stir, heat and boil until
completely dissolved, sterilize at 115℃ for 20min, cool to room temperature and set aside.
Quality Control
The following quality control strains were inoculated and cultured at 44.5℃±0.5℃ for 24h. The results are as follows:
Quality control strains
Growth
Escherichia coli ATCC25922
Blue-white fluorescence is produced under 366nm UV light
Salmonella typhimurium ATCC14028
No fluorescence under 366nm UV light
Enterococcus faecalis ATCC29212
Clear, no fluorescence
Storage and Shelf Life
2-30℃，Keep container tightly closed, avoid direct sunlight.
Use before expiry date on the label.
Precautions
1. When weighing the dehydrated medium, please wear masks to avoid causing respiratory system discomfort
2. Keep container tightly closed after using to prevent clumping.
Waste Disposal
Microbiological contamination was disposed by autoclaving at 121°C for 30 minutes.
Document
Intended Use For the determination of Escherichia coli in drinking water and its source water by multiple tube fermentation method. Principle and Interpretation MUG permits the rapid detec……
