Fourteen discrete fragments ranging from 100 bp to 2000 bp in 100 bp increments
Higher intensity reference bands at 500 bp and 1000 bp
2686 bp (pUC19) reference band for easy clone identification
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).
CloneSizer 100 bp DNA Ladder (Cat# 11600) – 100 loads
Ladder Properties:
Fourteen discrete fragments ranging from 100 bp to 2000 bp in 100 bp increments
Higher intensity reference bands at 500 bp and 1000 bp
2686 bp (pUC19) reference band for easy clone identification
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.
Other Products
Bioprocessing with Salt Active Nucleases – High Salt Conditions
Product Info
Document
Product Info
Bioprocessing with Salt Active Nucleases – High Salt Conditions
OverView
For SAN HQ, SAN HQ ELISA Kit, and now SAN HQ GMP
SAN HQ GMP is biochemically identical to SAN HQ but produced under GMP conditions.
Applications
Purification of biologics from residual nucleic acids in biopharma manufacturing
Purification of recombinant proteins and enzymes for research and diagnostic use
Removal of unwanted nucleic acids contamination in molecular biology reagents in challenging conditions
Reduction of viscosity in biological samples during production and automation
Vaccine manufacturing and viral vector preparation
DNA removal in high-salt lysates
SAN HQ – Peak performance at high salt conditions
Salt Active Nuclease High Quality (SAN HQ) is a Bioprocessing Grade nuclease developed as the most efficient solution for removal of both single and double stranded DNA and RNA at high salt conditions.
This nonspecific endonuclease has peak activity at salt concentrations between 400 – 700 mM (Fig. 1)
Non-enveloped viruses like Adenoviruses and Adeno-Associated Viruses (AAV’s) are inherently more robust with two distinct advantages: 1) They exhibit higher tolerance to additives like salt and detergents and 2) their production often involves the lysis of host cells, allowing for harvesting non-secreted vectors.
For Adeno-Associated Viruses (AAVs), which are often harvested from crude cell lysate, the high salt tolerance of SAN HQ is particularly beneficial. Salt is typically added to such lysates to reduce viral aggregation, facilitating more effective nuclease action to digest residual DNA.
SAN HQ’s is engineered for optimum activity in these high salt environments ensuring that you achieve unparalleled DNA removal without compromising the integrity of these robust viral vectors.
Key Benefits
Optimized Residual DNA Removal: Ensures efficient degradation of residual DNA in high-salt conditions, meeting stringent quality requirements for biologics and vaccines.
Boosted AAV Vector Purification: Enhances the purification process for adeno-associated viral vectors in high-salt conditions, improving quality and yield.
Streamlined Workflow: Eliminates the need for desalting stages, simplifying the bioprocessing protocol and saving time and resources.
Enable High-Throughput Processes: Facilitates scale-up and automation by working effectively in high-salt environments, increasing operational throughput.
Potential Surge in Virus Yield: Operates under conditions that may boost the titer yield of AAV production, potentially enhancing overall viral yield.
Economized Enzyme Usage: Reduces the need for excess enzyme and additional process adjustments, resulting in significant cost savings.
Minimized Risk of Process Disruptions: Offers reliable performance in various high-salt bioprocessing conditions, reducing the likelihood of disruptions due to enzyme inhibition.
Reliability: Provides consistent enzyme activity in challenging high-salt conditions, adding a layer of predictability and dependability to your operations.
Broader Applicability: Versatile enough to be used in a wide range of viral vector systems, expanding your research and production capabilities.
Enhanced Viral Stability: High-salt levels stabilize viral vectors, and SAN HQ operates effectively in these conditions, maintaining high yield and quality.
Host Cell Lysis: Facilitates efficient lysis of host cells in high-salt conditions, optimizing the harvest of both secreted and non-secreted viral vectors.
Key Features
High purity (≥ 98%)
No protease detected
Supplied with extended product documentation
Compatible with SAN HQ ELISA
The Challenge in Removing Host Cell Chromatin Impurities
In bioprocessing, the primary role of a nuclease is to efficiently digest and fragment host-cell DNA into sufficiently small pieces, facilitating its removal during downstream processing. While most nucleases can effectively degrade naked DNA into tiny fragments under optimal conditions—as demonstrated by M-SAN HQ and SAN HQ, which can digest dsDNA into fragments smaller than 6 nt—the reality in bioprocessing is more complex. (See fig. 5)
The DNA targeted for removal often exists as chromatin, embedded in a complex matrix containing remnants of the lysed host cell as well as large amounts of the therapeutic product.The product may or may not have an affinity for the chromatin you aim to remove.
High salt is often applied to mitigate issues like aggregation. The real challenge lies in a nuclease’s ability to efficiently fragment chromatin under these more complicated, high-salt, conditions—not merely degrading naked DNA under ideal circumstances.
SAN HQ ELISA kit is developed for the detection and quantification of SAN HQ and SAN HQ GMP. The kit is designed as a classical sandwich ELISA, with two monoclonal antibodies specific towards SAN HQ nuclease (fig 6).
Features
Sensitive: 0.4 – 25.6 ng/ml
Precise: RSD ≤ 15%
Accurate: 100% ± 15%
Stability: 12 months when stored between +2°C to +8°C
Document
For SAN HQ, SAN HQ ELISA Kit, and now SAN HQ GMP
SAN HQ GMP is biochemically identical to SAN HQ but produced under GMP conditions.
Principle: Peptone provide carbon and nitrogen sources to meet the needs of bacterial growth; sodium chloride maintains osmotic equilibrium; potassium dihydrogen phosphate and disodium hydrogen phosphate as buffer.
How to use: 1. Suspend 20g of product, adding 1L of distilled or deionized water, heated to boiling stirring until completely dissolved, dispensing into flask, autoclave at 121 for 15min, set aside. 2.Diluted and treated samples.
Quality control:
Item The name and number of strain Growth Colony Color 1 Salmonella typhi CMCC (B) 50071 good Cloudy broth 2 Salmonella typhimurium CMCC (B) 50115 good Cloudy broth 3 Paratyphoid Salmonella CMCC (B) 50093 good Cloudy broth
Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.
Usages: For determination of total bacterial count .
Principle: Tryptone provide carbon and nitrogen; yeast extract powder provides B vitamins; glucose to provide energy, agar is the solidifying agent. Formulation(per liter): Tryptone 5.0g Yeast extract powder 2.5g Glucose 1.0g Agar 15.0g Final pH 7.0 ± 0.2
How to use: 1.Suspend 23.5g in 1 L of distilled water , stirring heated to boiling until completely dissolved, dispensing flask, 121 autoclave for 15min. 2.Diluted and treated samples.
Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.
