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GENTAUR Europe BVBA Voortstraat 49, 1910 Kampenhout BELGIUM Tel 0032 16 58 90 45 Fax 0032 16 50 90 45 This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. |
GENTAUR BULGARIA
53 Iskar Str. 1191 Kokalyane, Sofia
Tel 0035924682280
Fax 0035929830072
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GENTAUR France SARL
9, rue Lagrange, 75005 Paris
Tel 01 43 25 01 50
Fax 01 43 25 01 60
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GmbH Marienbongard 20
52062 Aachen Deutschland
Tel (+49) 0241 56 00 99 68
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GENTAUR Ltd.
Howard Frank Turnberry House
1404-1410 High Road
Whetstone London N20 9BH
Tel 020 3393 8531
Fax 020 8445 9411
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GENTAUR Poland Sp. z o.o.
ul. Grunwaldzka 88/A m.2
81-771 Sopot, Poland
Tel 058 710 33 44
Fax 058 710 33 48
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GENTAUR Nederland BV
Kuiper 1
5521 DG Eersel Nederland
Tel 0208-080893
Fax 0497-517897
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GENTAUR SRL IVA IT03841300167
Piazza Giacomo Matteotti, 6, 24122 Bergamo
Tel 02 36 00 65 93
Fax 02 36 00 65 94
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GENTAUR Spain
Tel 0911876558
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Genprice Inc, Logistics
547, Yurok Circle
San Jose, CA 95123
Phone/Fax:
(408) 780-0908
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GENPRICE Inc. invoicing/ accounting:
6017 Snell Ave, Suite 357
San Jose, CA. 96123
Serbia, Macedonia,
Montenegro, Croatia:
Tel 0035929830070
Fax 0035929830072
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GENTAUR Romania
Tel 0035929830070
Fax 0035929830072
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GENTAUR Greece
Tel 00302111768494
Fax 0032 16 50 90 45
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Luxembourg +35220880274
Schweiz Züri +41435006251
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Ireland Dublin +35316526556
Norge Oslo +4721031366
Finland Helsset +358942419041
Sverige Stockholm +46852503438
Magyarország Budapest +3619980547
AccuPower samples available!
More: AccuPower
Rapid Fecal Occult Blood Test
Cat. Num.: ABT-FOB-B22
INTENDED USE :
Rapid FOB Test is a rapid, visual immunochromatographic test for the qualitative detection of human blood hemoglobin in fecal samples. This test is intended as an aid in the diagnosis of lower gastrointestinal (g.i.) disorders. The test is recommended for rofessional use.
FOR IN VITRO DIAGNOSTIC USE ONLY.
The principal use of FOB test is to screen for lower g.i. pathologies, such as colorectal cancers and large adenomas thatbleed. Colorectal cancer is one of the most commonly diagnosedcancers and a leading cause of cancer death in the UnitedStates (Lieberman, 994; MMWP, 1995). Screening for colorectal cancer probably increases the cancer detection at an early stage, therefore reduces the mortality (Dam et. al., 1995; Miller, 1995; and Lang, 1996). Earlier commercially availableFOB tests utilized the guaiac test, which equires special dietary restriction to minimize false positive and false negative results.One Step FOB Test are specially designed to detect humanhemoglobin in fecal samples using Immunochemical methods,which improved specificity for the detection of lower g.i. isordersincluding colorectal cancers and adenomas (Frommer et. al., 1988; St. John et. al., 1993).
More: Blood Tests
AccuPower RocketScript Cycle RT PreMix
AccuPower RocketScript Cycle RT PreMix is a ready-to-use lyophilized mastermix containing all components for first-strand cDNA synthesis from purified Poly(A) or total RNA template.
The premix contains Gentaur's exclusive M-MLV based thermostable reverse transcriptase (RTase), RocketScript, and oligo dT20 for added convenience. Conditions are optimized for Gentaur's patented Cyclic Temperature Reverse Transcription (CTRT) in a premix form.
Native M-MLV RTase has maximum activity at relatively low temperatures (42°C), causing several problems in reverse
transcription of RNA molecules with complex secondary structure. AccuPower RocketScript Cycle RT PreMix has thermostable activity across a wide temperature range, (42°C – 70°C), allowing efficient cDNA synthesis from virtually any RNA.
The lyophilized PreMix contains all components necessary for a successful CTRT reaction, including RTase, RNase inhibitor and buffer components. Just add template RNA, primers and water, and the RT reaction is ready to go.
Schematic representation of the 5' UTR of a gene, with complex secondary structure, at three different temperatures. Note that RocketScript shows full activity at 70°C allowing it to synthesize the complete gene sequence where M-MLV and other Reverse Transcriptase's fail.
Features and Benefits
Thermostable Activity: RocketScript is able to perform reverse transcription reactions throughout a wide range
of temperatures from 42°C to 70°C.
Enhanced Performance: RocketScript has enhanced performance to handle high and low input RNA concentrations
as well as short and long RT target sizes.
Easy-to-use: The product contains the enzyme itself, plus RNase inhibitors and all other components necessary for the best reverse transcription results in the tube.
Reproducibility: Gentaur's strict quality controlled production system ensures that your results will be reproducible experiment after experiment.
Flexible Reaction Conditions: Both CTRT and first-strand cDNA synthesis are both possible, with reaction temperatures
ranging from 42°C to 70°C.
Convenient: Just add template and primers and start your reaction. dNTPs, buffer and enzyme are provided.
Stability: Stable at room temperature for a month one year at 4°C and for 2 years in a -20°C freezer
RNase, DNase and Proteinase-free: Ensures the integrity of your samples.
Broad range of working temperatures: For RNAs that are G:C rich or significant secondary structure
Stable for 2 years at -20°C: Long shelf life
Specifications
5' to 3' exonuclease: No
3' to 5' exonuclease: No
3’ – A Overhang: No
Fragment Size: Up to 10 kb
Application
- First-strand synthesis of cDNA from RNA molecules (Reverse Transcription)
- RT-PCR
- Random priming reaction
- Library construction
- Probe labeling
- mRNA 5’end mapping by primer extension analysis
- Real time PCR
Experimental data
Figure 1. Comparison of amplification efficiency between AccuPower RocketScript Cycle RT PreMix and competitors’ RTases
(a) Sensitivity test
Primer set: Human TFRC set
Lane M: 1 kb DNA Ladder
Lane1: 100 ng Human total RNA from HeLa cell
Lane 2: 10 ng Human total RNA from HeLa cell
Lane3: 1 ng Human total RNA from HeLa cell
Lane4: 100 pg Human total RNA from HeLa cell
RT reaction condition is performed according to each manufacturer’s recommendations
(b) Full-Length cDNA synthesis test
RT reactions were performed according to each manufacturer’s recommendation. All cDNAs were amplified with AccuPower Hotstart PCR Premix (K-5050) from Gentaur
Note: Competitor products show inhibition at high input concentrations of total RNA
Lane 1: 1 μg Human total RNA from HeLa cell
Lane 2: 100 ng Human total RNA from HeLa cell
Lane 3: 10 ng Human total RNA from HeLa cell
Figure 2. Complex RNA amplification results of RocketScript Cycle RT PreMix
Each target gene was amplified after performing reverse transcription with AccuPower RocketScript Cycle RT PreMix.
Reverse transcription conditions: Conventional 1 hr incubation at 42°C, 50°C, or 60°C, deactivation at 95°C for 5 min
A: M-MLV Reverse Transcriptase
B: AccuPower RocketScript Cycle RT PreMix with Oligo (dT)20
Lane 1: 100 ng Human total RNA from HeLa cell
Lane 2: 10 ng Human total RNA from HeLa cell
Concentration (copies/rxn) | FTRT (Ct) | CTRT with 1 cycle (Ct) | CTRT with 10 cycles (Ct) |
10,000 | 19.46 | 18.77 | 18.51 |
1,000 | 24.11 | 24.04 | 22.93 |
100 | 29.78 | 28.35 | 28.19 |
10 | 32.87 | 33.00 | 31.05 |
Figure 3. Low copy species enrichment by cycle.
Comparing FTRT (Fixed Temperature Reverse Transcription) to 1 and 10 cycle(s) of CTRT reveal progressive improvement in detected cDNA yield as input copies decrease.
FTRT: 60 min incubation at 50°C followed by 5 min deactivation at 95°C
CTRT: Cycles of 37°C annealing 10 sec, 50°C cDNA synthesis 4 min, 55°C secondary structure melting and cDNA synthesis
30 sec
Primer set: Human GAPDH
Human Total RNA from HeLa cells
qPCR with AccuPower GreenStar qPCR PreMix (K-6210)
Figure 4. Amplification comparison by cycle
FTRT (Fixed Temperature Reverse Transcription) conditions:
Step | Temperature | Time | No. of Cycles |
dT20 | |||
cDNA synthesis | 50°C | 60 min | 1 |
Heat inactivation | 95°C | 5 min | 1 |
CTRT (Cyclic Temperature Reverse Transcription) conditions:
Step | Time | Temperature | No. of Cycles |
dT20 | |||
Primer annealing | 37°C | 10~30 sec | 1, 5, 10, or 15 |
cDNA synthesis | 50°C | 4 min | |
Melting secondary structure & cDNA synthesis | 55°C | 30 sec | |
Heat inactivation | 95°C | 5 min | 1 |
Primer set: Human GAPDH and myc set
Lane M: 1 kb DNA Ladder
Lane1: 10 ng Human Total RNA from HeLa Cell
Lane 2: 1 ng Human Total RNA from HeLa Cell
Lane 3: 100 pg Human Total RNA from HeLa Cell
Lane 4: 10 pg Human Total RNA from HeLa Cell
Figure 5. Comparison of amplification results between Gentaur RocketScriptTM Cycle RT PreMix and competitor RTases
All cDNAs were amplified with AccuPower Hotstart PCR Premix (K-5050) from Gentaur
Primer set: human Myc498 bp set
Lane M: 1 kb DNA Ladder
Lane1: 10 ng Human total RNA from HeLa Cell
Lane 2: 1 ng Human total RNA from HeLa Cell
Lane 3: 100 pg Human total RNA from HeLa Cell
Lane 4: 10 pg Human total RNA from HeLa Cell
AccuPower RocketScript RT PreMix
AccuPower RocketScript RT PreMix contains Gentaur’s exclusive M-MLV based thermostable reverse transcriptase (RTase), RocketScript. Native M-MLV RTase has maximum activity at relatively low temperatures (42°C), causing several problems in reverse transcription of RNA molecules with complex secondary structure.
RocketScript has thermostable activity (42°C~70°C), allowing efficient cDNA synthesis from virtually any RNA. The lyophilized PreMix contains all components necessary for a successful reverse transcription reaction, including RTase, RNase inhibitor and buffer components. Just add template RNA, primers and water, and the RT reaction is ready to go.
Schematic representation of the 5’UTR of a gene, with complex secondary structure, at three different temperatures. Note that RocketScript shows full activity at 70°C allowing it to synthesize the complete gene sequence where M-MLV and other Reverse Transcriptase's fail.
Features and Benefits
Thermostable Activity: RocketScript is able to perform reverse transcription reactions throughout a wide range
of temperatures from 42°C to 70°C.
Enhanced Performance: RocketScript has enhanced performance to handle both high and low input RNA
concentrations as well as short and long RT target sizes.
Easy-to-use: The product contains the enzyme itself, plus RNase inhibitors and all other components necessary for the best reverse transcription results in the tube.
Reproducibility: Gentaur's strict quality controlled production system ensures that your results will be reproducible experiment after experiment.
Convenient: Just add template and primers and start your reaction. dNTPs, buffer and enzyme are provided.
Stability: Stable at room temperature for a month one year at 4°C and for 2 years in a -20°C freezer
RNase, DNase and Proteinase-free: Ensures the integrity of your samples.
Broad range of working temperatures: For RNAs that are G:C rich or significant secondary structure
Stable for 2 years at -20°C: Long shelf life
Specifications
5' to 3' exonuclease: No
3' to 5' exonuclease: No
3’ – A Overhang: No
Fragment Size: Up to 10 kb
Application
- First-strand synthesis of cDNA from RNA molecules (RT)
- RT-PCR
- Random priming reaction
- Library construction
- Probe labeling
- mRNA 5end Mapping by Primer Extension Analysis
- Real time PCR
Figure 1. Sensitivity comparison between AccuPower RocketScript RT PreMix and M-MLV RTase
Sensitivity results of AccuPower RocketScript RT PreMix using GAPDH compared with conventional Reverse transcriptases.
Each 100 ng – 10 fg of total RNA used for RT and the same amount of RT products used for electrophoresis.
Lane 1: 10 fg Human total RNA from HeLa cell Lane 2: 100 fg Human total RNA from HeLa cell
Lane 3: 1 pg Human total RNA from HeLa cell Lane 4: 10 pg Human total RNA from HeLa cell
Lane 5: 100 pg Human total RNA from HeLa cell Lane 6: 1 ng Human total RNA from HeLa cell
Lane 7: 10 ng Human total RNA from HeLa cell Lane 8: 100 ng Human total RNA from HeLa cell
Figure 2. Comparison of amplification efficiency between AccuPower RocketScript RT PreMix and competitorsM-MLV RTase.
RocketScript is able to handle a wide range of sample concentrations and transcript lengths so your downstream applications are minimally effected by the reverse transcription step.
Lanes 1-3: 1,000 ng, 100 ng and 10 ng of total RNA from HeLa cells, respectively.
Figure 3. Sensitivity comparison between AccuPower RocketScript RT PreMix and competitor RTases using Real Time PCR
Reverse transcription conditions: conventional 1 hr incubation at 60°C, deactivation at 95°C for 5 min All cDNAs were amplified with AccuPower DualStar™ qPCR PreMix (K-6110) from Gentaur.
Concentration | RocketScript RT PreMix | Supplier Q | Supplier I |
10,000 | 23.91 | 25.63 | 24.43 |
1,000 | 27.33 | 28.92 | 28.03 |
100 | 30.62 | 32.42 | 30.88 |
10 | 33.63 | 35.43 | 33.95 |
Efficiency | 104% | 103% | 108% |
Linearity | 0.99999 | 0.9996 | 0.9995 |
AccuPower CycleScript RT PreMix
AccuPower CycleScript RT (available with: dT20, dN12, or dN6 primers) PreMix is an easy to resuspend lyophilized PCR Master Mix of CycleScript Reverse Transcriptase, a primer, and all of the other components for cDNA synthesis conveniently packaged in individual tubes. Simply add template RNA, and water. Then, the reverse transcription is performed by either a Cyclic RT reaction (patent pending) or conventional reverse transcription PCR. The use of Cyclic RT produces cDNA amplification and better results compared to conventional reverse transcription PCR – especially for rare transcripts. The resulting cDNA can be used in a variety of applications such as reverse transcription PCR (RT-PCR). The AccuPower CycleScript RT (dT20, dN12, or dN6) PreMix series is stable for 2 years at - 20°C due to a patented stabilizer.
AccuPower CycleScript RT was developed for both a conventional reverse transcription PCR at a fixed temperature at 42°C as well as Cyclic Reverse Transcription that is carried out like a PCR (please see the following comparison table). Gentaur’s Cyclic RT is an innovative technology to synthesize more homogeneous cDNA in less time compared to the conventional reverse transcription.
Conventional Reverse Transcription
Step 1: | RNA denaturation at 65°C for 10 minutes |
Step 2: | cDNA synthesis at a temperature between 37°C ~ 55°C for 15 ~ 60 minutes |
Cyclic Reverse Transcription
Step 1: | Primer annealing at a temperature between 15°C and 40°C for 30 seconds |
Step 2: | cDNA synthesis at a temperature between 42°C and 48°C for 4 minutes |
Step 3 (optional): | Denaturation of the secondary structure of the RNA template and cDNA synthesis at a temperature between 50°C and 55°C for 30 seconds |
Features and Benefits
Convenient lyophilized RT premix: | Simply add your purified RNA and start your reaction. Enzyme, dNTPs, reaction buffer, and oligo (dT)20 are provided. |
Broad range of working temperatures: | For RNAs that are G:C rich or significant secondary structure |
Novel Cyclic Reverse Transcription: | Ensures that you isolate even the rarest transcripts |
High yield of cDNA: | For genes up to 9 kb within 10 minutes |
Stable for 2 years at -20°C: | Long life |
RNase, DNase and Proteinase-free: | Ensures the integrity of your samples |
Specifications
3' to 5' exonuclease: No
3’ – A Overhang: No
Fragment size: 9 kb
Application
cDNA synthesis
Figure 1. Reaction condition comparison of Cyclic Reverse Transcription versus conventional reverse transcription PCR. 800 ng of HeLa cell total RNA was reverse transcribed using different reaction conditions and then 800 bp, 1.5 kb, 2.0 kb, and 2.6 kb of human transferrin receptor gene were amplified using AccuPower PCR PreMix.
M: 1 kb DNA Ladder (D-1040)
Lane 1 - 4: Conventional RT with dT20 at 42°C
Lane 5 – 8: Conventional RT with dN12 at 42°C
Lane 9 - 12: Conventional RT with dT20 at 55°C
Lane 13 - 16: Conventional RT with dN12 at 55°C
Lane 17 - 20: Cyclic RT with dT20 by 55°C
Lane 21 - 24: Cyclic RT with dN12 at 55°C
Figure 2. Coxsackie virus A9 (AJ295200) 5’-UTR region amplification with different reverse transcription products. Coxsackie virus RNA was reverse transcribed with different reverse transcription products and then amplified with PCR with AccuPower PCR PreMix. All materials were used in accordance with manufacturer’s instructions.
M: 100 bp DNA Ladder (D-1030)
Lane 1: Reverse transcription with AccuPower RT PreMix and oligo dT primer
Lane 2: Reverse transcription with AccuPower RT PreMix and random primer
Lane 3 – 4, 7 – 8, 11 – 12: Reverse transcription with AccuPower CycleScript RT PreMix and dT20
Lane 5 – 6, 9 – 10, 13 – 14: Reverse transcription with AccuPower CycleScript RT PreMix and dN12
Lane 15 – 16: Reverse transcription with RT product from company C and oligo dT primer
Lane 17 – 18: Reverse transcription with RT product from company C and random primer
Lane 19 – 20: Reverse transcription with RT product from company I and oligo dT primer
Lane 21 – 22: Reverse transcription with RT product from company I and random primer
Figure 3. Long transcript production comparison. Reverse transcription was carried out with various reverse transcription products prior to PCR with AccuPower PCR PreMix.
M: 100 bp DNA Ladder (D-1030)
Gentaur: Gentaur / 1 hour incubation at 55°C
C: Company C / 1 hour incubation at 42°C
I: Company I / 1 hour incubation at 45°C
Lane 1, 3, 5: Product reverse transcribed with oligo dT primer
Lane 2, 4, 6: Product reverse transcribed with random primer
Figure 4. Transferrin receptor gene amplification with various reverse transcription products. Reverse transcription was carried out with four different reverse transcription products according to manufacturer’s instructions and then cDNA was amplified with AccuPower PCR PreMix.
M: 1 kb DNA Ladder (D-1040)
Lane 1 – 5: Reverse transcribed with AccuPower CycleScript RT PreMix (dT20) / 1 hour at 55°C
Lane 6 – 10: Reverse transcribed with AccuPower CycleScript RT PreMix (dN12) / 1 hour at 55°C
Lane 11 – 15: Reverse transcribed with Company C product and oligo dT primer / 1 hour at 42°C
Lane 16 – 20: Reverse transcribed with Company C product and random primer / 1 hour at 42°C
Lane 21 – 25: Reverse transcribed with Company I product and dT primer / 1 hour at 45°C
Lane 26 – 30: Reverse transcribed with Company I product and random primer / 1 hour at 45°C
Figure 5. Reaction temperatures and time comparison. Data A and B demonstrate high thermal stability of AccuPowerCycleScript RT PreMix.
A: Reverse transcription carried out with AccuPower CycleScript RT PreMix and dT20
B: Reverse transcription carried out with AccuPower CycleScript RT PreMix and dN12
Conventional RT #1: 1 hour incubation at 42°C
Cyclic RT #1: Repeat 12 times of 2 minutes at 37°C and 3 minutes at 50°C
Conventional RT #2: 1 hour incubation at 55°C
Cyclic RT #2: Repeat 12 times of 1 minutes at 37°C, 3 minutes at 47°C, and 3 minutes at 55°C
M: 100 bp DNA Ladder (D-1030)
Lane 1, 5, 9, 13, 17, 21, 25, 29: 100 ng of HeLa cell total RNA used for reaction
Lane 2, 6, 10, 14, 18, 22, 26, 20: 10 ng of HeLa cell total RNA used for reaction
Lane 3, 7, 11, 15, 19, 23, 27, 31: 1 ng of HeLa cell total RNA used for reaction
Lane 4, 8, 12, 16, 20, 24, 28, 32: 100 pg of HeLa cell total RNA used for reaction
Figure 6. Data C and D demonstrate superior productivity of AccuPower CycleScript RT PreMix..
C: Reverse transcription carried out with AccuPower CycleScript RT PreMix and dT20
D: Reverse transcription carried out with AccuPower CycleScript RT PreMix and dN12
10 min: 2 times of 2 minutes at 37°C and 3 minutes at 50°C
20 min: 4 times of 2 minutes at 37°C and 3 minutes at 50°C
60 min: 12 times of 2 minutes at 37°C and 3 minutes at 50°C
M: 100 bp DNA Ladder (D-1030)
Lane 1, 5, 9, 13, 17, 21: 100 ng of HeLa cell total RNA used for reaction
Lane 2, 6, 10, 14, 18, 22: 10 ng of HeLa cell total RNA used for reaction
Lane 3, 7, 11, 15, 19, 2: 1 ng of HeLa cell total RNA used for reaction
Lane 4, 8, 12, 16, 20, 24, 28, 32: 100 pg of HeLa cell total RNA used for reaction