Ligation sequencing gDNA - Native Barcoding Kit 24 V14 (SQK-NBD114.24)
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MinION: Protocol
Ligation sequencing gDNA - Native Barcoding Kit 24 V14 (SQK-NBD114.24) V NBE_9169_v114_revT_19Dec2024
Barcoding of native genomic DNA libraries
- Requires the Native Barcoding Kit 24 V14 (SQK-NBD114.24)
- PCR-free protocol
- Using up to 24 barcodes
- Allows analysis of native DNA
- Compatible with R10.4.1 flow cells
For Research Use Only
FOR RESEARCH USE ONLY
Contents
Introduction to the protocol
Library preparation
- 4. DNA repair and end-prep
- 5. Native barcode ligation
- 6. Adapter ligation and clean-up
- 7. Priming and loading the SpotON flow cell
Sequencing and data analysis
- 8. Data acquisition and basecalling
- 9. ããŠã³ã¹ããªãŒã 解æ
- 10. ãããŒã»ã«ã®åå©çšãšè¿åŽ
Troubleshooting
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Barcoding of native genomic DNA libraries
- Requires the Native Barcoding Kit 24 V14 (SQK-NBD114.24)
- PCR-free protocol
- Using up to 24 barcodes
- Allows analysis of native DNA
- Compatible with R10.4.1 flow cells
For Research Use Only
1. Overview of the protocol
Introduction to the Native Barcoding Kit 24 V14 protocol
This protocol describes how to carry out native barcoding of genomic DNA (gDNA) using the Native Barcoding Kit 24 V14 (SQK-NBD114.24). There are 24 unique barcodes available, allowing the user to pool up to 24 different samples in one sequencing experiment. It is highly recommended that a Lambda control experiment is completed first to become familiar with the technology.
Steps in the sequencing workflow:
Prepare for your experiment
You will need to:
- Extract your DNA, and check its length, quantity and purity. The quality checks performed during the protocol are essential in ensuring experimental success.
- Ensure you have your sequencing kit, the correct equipment and third-party reagents
- Download the software for acquiring and analysing your data
- Check your flow cell to ensure it has enough pores for a good sequencing run
Prepare your library
You will need to:
- Repair the DNA, and prepare the DNA ends for adapter attachment
- Ligate Native barcodes supplied in the kit to the DNA ends
- Ligate sequencing adapters supplied in the kit to the DNA ends
- Prime the flow cell, and load your DNA library into the flow cell
Sequencing
You will need to:
- Start a sequencing run using the MinKNOW software, which will collect raw data from the device and convert it into basecalled reads
- Demultiplex barcoded reads in MinKNOW or the Guppy basecalling, choosing the SQK-NBD114.24 kit option
- Start the EPI2ME software and select a workflow for further analysis (this step is optional)
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We do not recommend mixing barcoded libraries with non-barcoded libraries prior to sequencing.
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Optional fragmentation and size selection
By default, the protocol contains no DNA fragmentation step, however in some cases it may be advantageous to fragment your sample. For example, when working with lower amounts of input gDNA (100 ng â 500 ng), fragmentation will increase the number of DNA molecules and therefore increase throughput. Instructions are available in the DNA Fragmentation section of Extraction methods.
Additionally, we offer several options for size-selecting your DNA sample to enrich for long fragments - instructions are available in the Size Selection section of Extraction methods.
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Compatibility of this protocol
This protocol should only be used in combination with:
- Native Barcoding Kit 24 V14 (SQK-NBD114.24)
- R10.4.1 flow cells (FLO-MIN114)
- Flow Cell Wash Kit (EXP-WSH004)
- Sequencing Auxiliary Vials V14 (EXP-AUX003)
- Native Barcoding Expansion V14 (EXP-NBA114)
2. Equipment and consumables
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- Native Barcoding Kit 24 V14 (SQK-NBD114.24)
- 400 ng gDNA per sample if using >4 barcodes
- OR 1000 ng gDNA per sample if using â€4 barcodes
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- NEB Blunt/TA Ligase Master Mix (NEB, M0367)
- NEBNext FFPE Repair Mix (NEB, M6630)
- NEBNext Ultra II End repair/dA-tailing Module (NEB, E7546)
- NEBNext Quick Ligation Module (NEB, E6056)
- Eppendorf twin.tec® PCR plate 96 LoBind, semi-skirted (Eppendorfâ¢, cat # 0030129504) with heat seals
- 1.5 ml Eppendorf DNA LoBind tubes
- 2 ml Eppendorf DNA LoBind tubes
- Nuclease-free water (e.g. ThermoFisher, AM9937)
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- Qubit⢠Assay Tubes (Invitrogen, Q32856)
- Qubit dsDNA HS Assay Kit (ThermoFisher, cat # Q32851)
- Bovine Serum Albumin (BSA) (50 mg/ml) (e.g Invitrogen⢠UltraPure⢠BSA 50 mg/ml, AM2616)
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- Hula mixerïŒç·©ããã«å転ãããããµãŒïŒ
- Microplate centrifuge, e.g. Fisherbrand⢠Mini Plate Spinner Centrifuge (Fisher Scientific, 11766427)
- Microfuge
- Magnetic rack
- ãã«ããã¯ã¹ãããµãŒ
- ãµãŒãã«ãµã€ã¯ã©ãŒ
- Multichannel pipette and tips
- P1000 ããããåã³ããã
- P200 ãããããšããã
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- P20 ãããããšããã
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- P2 ãããããšããã
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- ã¿ã€ããŒ
- Eppendorf 5424 centrifuge (or equivalent)
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- Nanodrop spectrophotometer
For this protocol, we recommend the following inputs:
- 400 ng per sample for >4 barcodes
- 1000 ng per sample for â€4 barcodes
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The Native Adapter (NA) used in this kit and protocol is not interchangeable with other sequencing adapters.
Native Barcoding Kit 24 V14 (SQK-NBD114.24) contents
Note: We are in the process of reformatting the barcodes provided in this kit into a plate format. This will reduce plastic waste and will facilitate automated applications.
Plate format
Name | Acronym | Cap colour | No. of vials | Fill volume per vial (µl) |
---|---|---|---|---|
DNA Control Sample | DCS | Yellow | 2 | 35 |
Native Adapter | NA | Green | 1 | 40 |
Sequencing Buffer | SB | Red | 1 | 700 |
Library Beads | LIB | Pink | 1 | 600 |
Library Solution | LIS | White cap, pink label | 1 | 600 |
Elution Buffer | EB | Black | 2 | 500 |
AMPure XP Beads | AXP | Clear cap, light teal label | 1 | 6,000 |
Long Fragment Buffer | LFB | Orange | 1 | 1,800 |
Short Fragment Buffer | SFB | Clear | 1 | 1,800 |
EDTA | EDTA | Blue | 1 | 700 |
Flow Cell Flush | FCF | Clear cap, light blue label | 1 | 8,000 |
Flow Cell Tether | FCT | Purple | 1 | 200 |
Native Barcode plate | NB01-24 | - | 2 plates, 3 sets of barcodes per plate | 5 µl per well |
Note: This Product Contains AMPure XP Reagent Manufactured by Beckman Coulter, Inc. and can be stored at -20°C with the kit without detriment to reagent stability.
Note: The DNA Control Sample (DCS) is a 3.6 kb standard amplicon mapping the 3' end of the Lambda genome.
Vial format
Name | Acronym | Cap colour | No. of vials | Fill volume per vial (µl) |
---|---|---|---|---|
Native Barcodes | NB01-24 | Clear | 24 (one per barcode) | 20 |
DNA Control Sample | DCS | Yellow | 2 | 35 |
Native Adapter | NA | Green | 1 | 40 |
Sequencing Buffer | SB | Red | 1 | 700 |
Library Beads | LIB | Pink | 1 | 600 |
Library Solution | LIS | White cap, pink label | 1 | 600 |
Elution Buffer | EB | Black | 2 | 500 |
AMPure XP Beads | AXP | Clear cap, light teal label | 1 | 6,000 |
Long Fragment Buffer | LFB | Orange | 1 | 1,800 |
Short Fragment Buffer | SFB | Clear | 1 | 1,800 |
EDTA | EDTA | Blue | 1 | 700 |
Flow Cell Flush | FCF | Clear cap, light blue label | 1 | 8,000 |
Flow Cell Tether | FCT | Purple | 1 | 200 |
Note: This Product Contains AMPure XP Reagent Manufactured by Beckman Coulter, Inc. and can be stored at -20°C with the kit without detriment to reagent stability.
Note: The DNA Control Sample (DCS) is a 3.6 kb standard amplicon mapping the 3' end of the Lambda genome.
To maximise the use of the Native Barcoding Kits, the Native Barcode Auxiliary V14 (EXP-NBA114) and the Sequencing Auxiliary Vials V14 (EXP-AUX003) expansion packs are available.
These expansions provide extra library preparation and flow cell priming reagents to allow users to utilise any unused barcodes for those running in smaller subsets.
Both expansion packs used together will provide enough reagents for 12 reactions. For customers requiring extra EDTA to maximise the use of barcodes, we recommend using 0.25 M EDTA and adding 4 µl for library preps using the SQK-NBD114.24 kit and 2 µl for preps using the SQK-NBD114.96 kit.
Native Barcode Auxiliary V14 (EXP-NBA114) contents:
Note: This Product contains AMPure XP Reagent manufactured by Beckman Coulter, Inc. and can be stored at -20°C with the kit without detriment to reagent stability.
Sequencing Auxiliary Vials V14 (EXP-AUX003) contents:
Native barcode sequences
Component | Forward sequence | Reverse sequence |
---|---|---|
NB01 | CACAAAGACACCGACAACTTTCTT | AAGAAAGTTGTCGGTGTCTTTGTG |
NB02 | ACAGACGACTACAAACGGAATCGA | TCGATTCCGTTTGTAGTCGTCTGT |
NB03 | CCTGGTAACTGGGACACAAGACTC | GAGTCTTGTGTCCCAGTTACCAGG |
NB04 | TAGGGAAACACGATAGAATCCGAA | TTCGGATTCTATCGTGTTTCCCTA |
NB05 | AAGGTTACACAAACCCTGGACAAG | CTTGTCCAGGGTTTGTGTAACCTT |
NB06 | GACTACTTTCTGCCTTTGCGAGAA | TTCTCGCAAAGGCAGAAAGTAGTC |
NB07 | AAGGATTCATTCCCACGGTAACAC | GTGTTACCGTGGGAATGAATCCTT |
NB08 | ACGTAACTTGGTTTGTTCCCTGAA | TTCAGGGAACAAACCAAGTTACGT |
NB09 | AACCAAGACTCGCTGTGCCTAGTT | AACTAGGCACAGCGAGTCTTGGTT |
NB10 | GAGAGGACAAAGGTTTCAACGCTT | AAGCGTTGAAACCTTTGTCCTCTC |
NB11 | TCCATTCCCTCCGATAGATGAAAC | GTTTCATCTATCGGAGGGAATGGA |
NB12 | TCCGATTCTGCTTCTTTCTACCTG | CAGGTAGAAAGAAGCAGAATCGGA |
NB13 | AGAACGACTTCCATACTCGTGTGA | TCACACGAGTATGGAAGTCGTTCT |
NB14 | AACGAGTCTCTTGGGACCCATAGA | TCTATGGGTCCCAAGAGACTCGTT |
NB15 | AGGTCTACCTCGCTAACACCACTG | CAGTGGTGTTAGCGAGGTAGACCT |
NB16 | CGTCAACTGACAGTGGTTCGTACT | AGTACGAACCACTGTCAGTTGACG |
NB17 | ACCCTCCAGGAAAGTACCTCTGAT | ATCAGAGGTACTTTCCTGGAGGGT |
NB18 | CCAAACCCAACAACCTAGATAGGC | GCCTATCTAGGTTGTTGGGTTTGG |
NB19 | GTTCCTCGTGCAGTGTCAAGAGAT | ATCTCTTGACACTGCACGAGGAAC |
NB20 | TTGCGTCCTGTTACGAGAACTCAT | ATGAGTTCTCGTAACAGGACGCAA |
NB21 | GAGCCTCTCATTGTCCGTTCTCTA | TAGAGAACGGACAATGAGAGGCTC |
NB22 | ACCACTGCCATGTATCAAAGTACG | CGTACTTTGATACATGGCAGTGGT |
NB23 | CTTACTACCCAGTGAACCTCCTCG | CGAGGAGGTTCACTGGGTAGTAAG |
NB24 | GCATAGTTCTGCATGATGGGTTAG | CTAACCCATCATGCAGAACTATGC |
3. Computer requirements and software
MinION Mk1B IT requirements
Sequencing on a MinION Mk1B requires a high-spec computer or laptop to keep up with the rate of data acquisition. For more information, refer to the MinION Mk1B IT requirements document.
MinION Mk1C IT requirements
The MinION Mk1C contains fully-integrated compute and screen, removing the need for any accessories to generate and analyse nanopore data. For more information refer to the MinION Mk1C IT requirements document.
MinION Mk1D IT requirements
Sequencing on a MinION Mk1D requires a high-spec computer or laptop to keep up with the rate of data acquisition. For more information, refer to the MinION Mk1D IT requirements document.
Software for nanopore sequencing
MinKNOW
The MinKNOW software controls the nanopore sequencing device, collects sequencing data and basecalls in real time. You will be using MinKNOW for every sequencing experiment to sequence, basecall and demultiplex if your samples were barcoded.
For instructions on how to run the MinKNOW software, please refer to the MinKNOW protocol.
EPI2ME (optional)
The EPI2ME cloud-based platform performs further analysis of basecalled data, for example alignment to the Lambda genome, barcoding, or taxonomic classification. You will use the EPI2ME platform only if you would like further analysis of your data post-basecalling.
For instructions on how to create an EPI2ME account and install the EPI2ME Desktop Agent, please refer to this link.
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Flongle Flow Cell | 50 |
MinION/GridION Flow Cell | 800 |
PromethION Flow Cell | 5000 |
4. DNA repair and end-prep
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- 400 ng gDNA per barcode
- OR 1000 ng gDNA per sample if using â€4 barcodes
- AMPure XP Beads (AXP)
- DNA Control Sample (DCS)
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- NEBNext FFPE DNA Repair Mix (NEB, M6630)
- NEBNext® Ultra II End Repair / dA-tailing Module (NEB, E7546)
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- 1.5 ml Eppendorf DNA LoBind tubes
- Eppendorf twin.tec® PCR plate 96 LoBind, semi-skirted (Eppendorfâ¢, cat # 0030129504) with heat seals
- OR 0.2 ml thin-walled PCR tubes
- Nuclease-free water (e.g. ThermoFisher, AM9937)
- Qubit⢠Assay Tubes (Invitrogen, Q32856)
- Qubit dsDNA HS Assay Kit (Invitrogen, Q32851)
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- P1000 ããããåã³ããã
- P200 pipette and tips
- P100 ãããããšããã
- P20 pipette and tips
- P10 ãããããšããã
- P2 pipette and tips
- Multichannel pipette and tips
- Thermal cycler
- Microplate centrifuge, e.g. Fisherbrand⢠Mini Plate Spinner Centrifuge (Fisher Scientific, 11766427)
- Microfuge
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- Magnetic rack
- ãã«ããã¯ã¹ãããµãŒ
- Hula mixer (rotator mixer)
- Qubit fluorometer (or equivalent)
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For samples containing long gDNA fragments, we recommend using wide-bore pipette tips for the mixing steps to preserve the DNA length.
Thaw the AMPure XP Beads (AXP) and DNA Control Sample (DCS) at room temperature and mix by vortexing. Keep the beads at room temperature and store the DNA Control Sample (DCS) on ice.
Prepare the NEBNext FFPE DNA Repair Mix and NEBNext Ultra II End Repair / dA-tailing Module reagents in accordance with manufacturerâs instructions, and place on ice.
For optimal performance, NEB recommend the following:
Thaw all reagents on ice.
Flick and/or invert the reagent tubes to ensure they are well mixed.
Note: Do not vortex the FFPE DNA Repair Mix or Ultra II End Prep Enzyme Mix.Always spin down tubes before opening for the first time each day.
The Ultra II End Prep Buffer and FFPE DNA Repair Buffer may have a little precipitate. Allow the mixture to come to room temperature and pipette the buffer up and down several times to break up the precipitate, followed by vortexing the tube for 30 seconds to solubilise any precipitate.
Note: It is important the buffers are mixed well by vortexing.The FFPE DNA Repair Buffer may have a yellow tinge and is fine to use if yellow.
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Do not vortex the NEBNext FFPE DNA Repair Mix or NEBNext Ultra II End Prep Enzyme Mix.
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It is important that the NEBNext FFPE DNA Repair Buffer and NEBNext Ultra II End Prep Reaction Buffer are mixed well by vortexing.
Check for any visible precipitate; vortexing for at least 30 seconds may be required to solubilise any precipitate.
Dilute your DNA Control Sample (DCS) by adding 105 µl Elution Buffer (EB) directly to one DCS tube. Mix gently by pipetting and spin down.
One tube of diluted DNA Control Sample (DCS) is enough for 140 samples. Excess can be stored at -20°C in the freezer.
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In clean 0.2 ml thin-walled PCR tubes (or a clean 96-well plate), prepare your DNA samples:
- For >4 barcodes, aliquot 400 ng per sample
- For â€4 barcodes, aliquot 1000 ng per sample
Make up each sample to 11 µl using nuclease-free water. Mix gently by pipetting and spin down.
Combine the following components per tube/well:
Between each addition, pipette mix 10 - 20 times.
Reagent | Volume |
---|---|
DNA sample | 11 µl |
Diluted DNA Control Sample (DCS) | 1 µl |
NEBNext FFPE DNA Repair Buffer | 0.875 µl |
Ultra II End-prep Reaction Buffer | 0.875 µl |
Ultra II End-prep Enzyme Mix | 0.75 µl |
NEBNext FFPE DNA Repair Mix | 0.5 µl |
Total | 15 µl |
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We recommend making up a mastermix of the end-prep and DNA repair reagents for the total number of samples and adding 3 µl to each well.
Ensure the components are thoroughly mixed by pipetting and spin down in a centrifuge.
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Transfer each sample into a clean 1.5 ml Eppendorf DNA LoBind tube.
Resuspend the AMPure XP beads (AXP) by vortexing.
Add 15 µl of resuspended AMPure XP Beads (AXP) to each end-prep reaction and mix by flicking the tube.
Incubate on a Hula mixer (rotator mixer) for 5 minutes at room temperature.
Prepare sufficient fresh 80% ethanol in nuclease-free water for all of your samples. Allow enough for 400 µl per sample, with some excess.
Spin down the samples and pellet the beads on a magnet until the eluate is clear and colourless. Keep the tubes on the magnet and pipette off the supernatant.
Keep the tube on the magnet and wash the beads with 200 µl of freshly prepared 80% ethanol without disturbing the pellet. Remove the ethanol using a pipette and discard.
If the pellet was disturbed, wait for beads to pellet again before removing the ethanol.
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Briefly spin down and place the tubes back on the magnet for the beads to pellet. Pipette off any residual ethanol. Allow to dry for 30 seconds, but do not dry the pellets to the point of cracking.
Remove the tubes from the magnetic rack and resuspend the pellet in 10 µl nuclease-free water. Spin down and incubate for 2 minutes at room temperature.
Pellet the beads on a magnet until the eluate is clear and colourless.
Remove and retain 10 µl of eluate into a clean 1.5 ml Eppendorf DNA LoBind tube.
- Dispose of the pelleted beads
CHECKPOINT
Quantify 1 µl of each eluted sample using a Qubit fluorometer.
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Take forward an equimolar mass of each sample to be barcoded forward into the native barcode ligation step. However, you may store the samples at 4°C overnight.
5. Native barcode ligation
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- Native Barcodes (NB01-24)
- AMPure XP Beads (AXP)
- EDTA (EDTA)
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- NEB Blunt/TA Ligase Master Mix (NEB, M0367)
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- Nuclease-free water (e.g. ThermoFisher, AM9937)
- 1.5 ml Eppendorf DNA LoBind tubes
- Eppendorf twin.tec® PCR plate 96 LoBind, semi-skirted (Eppendorfâ¢, cat # 0030129504) with heat seals
- OR 0.2 ml thin-walled PCR tubes
- Qubit⢠Assay Tubes (Invitrogen, Q32856)
- Qubit dsDNA HS Assay Kit (ThermoFisher, cat # Q32851)
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- ã¢ã€ã¹ãã±ãïŒæ°·å ¥ãïŒ
- Multichannel pipette and tips
- P1000 ããããåã³ããã
- P200 pipette and tips
- P100 ãããããšããã
- P20 pipette and tips
- P10 ãããããšããã
- P2 pipette and tips
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Prepare the NEB Blunt/TA Ligase Master Mix according to the manufacturer's instructions, and place on ice:
Thaw the reagents at room temperature.
Spin down the reagent tubes for 5 seconds.
Ensure the reagents are fully mixed by performing 10 full volume pipette mixes.
Thaw the EDTA at room temperature and mix by vortexing. Then spin down and place on ice.
Thaw the Native Barcodes (NB01-24) at room temperature. Briefly spin down, individually mix the barcodes required for your number of samples by pipetting, and place them on ice.
Select a unique barcode for each sample to be run together on the same flow cell. Up to 24 samples can be barcoded and combined in one experiment.
Please note: Only use one barcode per sample.
In clean 0.2 ml PCR-tubes or a 96-well plate, add the reagents in the following order per well:
Between each addition, pipette mix 10 - 20 times.
Reagent | Volume |
---|---|
End-prepped DNA | 7.5 µl |
Native Barcode (NB01-24) | 2.5 µl |
Blunt/TA Ligase Master Mix | 10 µl |
Total | 20 µl |
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Incubate for 20 minutes at room temperature.
Add the following volume of EDTA to each well and mix thoroughly by pipetting and spin down briefly.
Note: Ensure you follow the instructions for the cap colour of your EDTA tube.
EDTA cap colour | Volume per well |
---|---|
For clear cap EDTA | 2 µl |
For blue cap EDTA | 4 µl |
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EDTA is added at this step to stop the reaction.
Pool all the barcoded samples in a 1.5 ml Eppendorf DNA LoBind tube.
Note: Ensure you follow the instructions for the cap colour of your EDTA tube.
Volume per sample | For 6 samples | For 12 samples | For 24 samples | |
---|---|---|---|---|
Total volume for preps using clear cap EDTA | 22 µl | 132 µl | 264 µl | 528 µl |
Total volume for preps using blue cap EDTA | 24 µl | 144 µl | 288 µl | 576 µl |
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We recommend checking the base of your tubes/plate are all the same volume before pooling and after to ensure all the liquid has been taken forward.
Resuspend the AMPure XP Beads (AXP) by vortexing.
Add 0.4X AMPure XP Beads (AXP) to the pooled reaction, and mix by pipetting.
Note: Ensure you follow the instructions for the cap colour of your EDTA tube.
Volume per sample | For 6 samples | For 12 samples | For 24 samples | |
---|---|---|---|---|
Volume of AXP for preps using clear cap EDTA | 9 µl | 53 µl | 106 µl | 211 µl |
Volume of AXP for preps using blue cap EDTA | 10 µl | 58 µl | 115 µl | 230 µl |
Incubate on a Hula mixer (rotator mixer) for 10 minutes at room temperature.
Prepare 2 ml of fresh 80% ethanol in nuclease-free water.
Spin down the sample and pellet on a magnet for 5 minutes. Keep the tube on the magnetic rack until the eluate is clear and colourless, and pipette off the supernatant.
Keep the tube on the magnetic rack and wash the beads with 700 µl of freshly prepared 80% ethanol without disturbing the pellet. Remove the ethanol using a pipette and discard.
If the pellet was disturbed, wait for beads to pellet again before removing the ethanol.
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Spin down and place the tube back on the magnetic rack. Pipette off any residual ethanol. Allow the pellet to dry for ~30 seconds, but do not dry the pellet to the point of cracking.
Remove the tube from the magnetic rack and resuspend the pellet in 35 µl nuclease-free water by gently flicking.
Incubate for 10 minutes at 37°C. Every 2 minutes, agitate the sample by gently flicking for 10 seconds to encourage DNA elution.
Pellet the beads on a magnetic rack until the eluate is clear and colourless.
Remove and retain 35 µl of eluate into a clean 1.5 ml Eppendorf DNA LoBind tube.
CHECKPOINT
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Take forward the barcoded DNA library to the adapter ligation and clean-up step. However, you may store the sample at 4°C overnight.
6. Adapter ligation and clean-up
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- Long Fragment Buffer (LFB)
- Short Fragment Buffer (SFB)
- Elution Buffer (EB)
- Native Adapter (NA)
- AMPure XP Beads (AXP)
æ¶èå
- NEBNext® Quick Ligation Module (NEB, E6056)
- 1.5 ml Eppendorf DNA LoBind tubes
- Qubit⢠Assay Tubes (Invitrogen, Q32856)
- Qubit dsDNA HS Assay Kit (ThermoFisher, cat # Q32851)
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- ãã°ãããã©ãã¯
- ãã«ããã¯ã¹ãããµãŒ
- Hula mixerïŒç·©ããã«å転ãããããµãŒïŒ
- ãµãŒãã«ãµã€ã¯ã©ãŒ
- P1000 ããããåã³ããã
- P200 ãããããšããã
- P100 ãããããšããã
- P20 ãããããšããã
- P10 ãããããšããã
- Ice bucket with ice
- Qubitèå å 床èšïŒãŸãã¯QCãã§ãã¯ã®ããã®åçåïŒ
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The Native Adapter (NA) used in this kit and protocol is not interchangeable with other sequencing adapters.
Prepare the NEBNext Quick Ligation Reaction Module according to the manufacturer's instructions, and place on ice:
Thaw the reagents at room temperature.
Spin down the reagent tubes for 5 seconds.
Ensure the reagents are fully mixed by performing 10 full volume pipette mixes. Note: Do NOT vortex the Quick T4 DNA Ligase.
The NEBNext Quick Ligation Reaction Buffer (5x) may have a little precipitate. Allow the mixture to come to room temperature and pipette the buffer up and down several times to break up the precipitate, followed by vortexing the tube for several seconds to ensure the reagent is thoroughly mixed.
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Do not vortex the Quick T4 DNA Ligase.
Spin down the Native Adapter (NA) and Quick T4 DNA Ligase, pipette mix and place on ice.
Thaw the Elution Buffer (EB) at room temperature and mix by vortexing. Then spin down and place on ice.
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䜿çšãããŠã©ãã·ã¥ãããã¡ãŒïŒLFBãŸãã¯SFBïŒã«å¿ããŠãã¢ããã¿ãŒã©ã€ã²ãŒã·ã§ã³åŸã®ã¯ãªãŒã³ã¢ããã¹ãããã¯ã3 kb以äžã®DNAã®æçãæ¿çž®ããããå šãŠã®æçé·ãåçã«ç²Ÿè£œããããã«èšèšãããŠããŸãã
- 3kb以äžã®DNAæçãæ¿çž®ããã«ã¯ãLong Fragment Buffer (LFB)ã䜿çšããŠãã ããã
- äžæ¹ã§ãããããµã€ãºã® DNA æçãä¿æããã«ã¯ãShort Fragment Buffer (SFB) ã䜿çšããŠãã ããã
Long Fragment BufferïŒLFBïŒãŸã㯠Short Fragment BufferïŒSFBïŒã®ããããã宀枩ã§è§£åãããã«ããã¯ã¹ã§æ··åããŸãããã®åŸãã¹ãã³ããŠã³ããŠæ°·ã®äžã«çœ®ããŸãã
In a 1.5 ml Eppendorf LoBind tube, mix in the following order:
Between each addition, pipette mix 10 - 20 times.
Reagent | Volume |
---|---|
Pooled barcoded sample | 30 µl |
Native Adapter (NA) | 5 µl |
NEBNext Quick Ligation Reaction Buffer (5X) | 10 µl |
Quick T4 DNA Ligase | 5 µl |
Total | 50 µl |
åå¿æ¶²ãå®å šã«æ··åããããã«ããã£ãããšããããã£ã³ã°ãçæéã¹ãã³ããŠã³ããŠäžããã
Incubate the reaction for 20 minutes at room temperature.
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The next clean-up step uses Long Fragment Buffer (LFB) or Short Fragment Buffer (SFB) rather than 80% ethanol to wash the beads. The use of ethanol will be detrimental to the sequencing reaction.
Resuspend the AMPure XP Beads (AXP) by vortexing.
Add 20 µl of resuspended AMPure XP Beads (AXP) to the reaction and mix by pipetting.
Incubate on a Hula mixer (rotator mixer) for 10 minutes at room temperature.
Spin down the sample and pellet on the magnetic rack. Keep the tube on the magnet and pipette off the supernatant.
Wash the beads by adding either 125 ÎŒl Long Fragment Buffer (LFB) or Short Fragment Buffer (SFB). Flick the beads to resuspend, spin down, then return the tube to the magnetic rack and allow the beads to pellet. Remove the supernatant using a pipette and discard.
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Spin down and place the tube back on the magnet. Pipette off any residual supernatant.
Remove the tube from the magnetic rack and resuspend pellet in 15 µl Elution Buffer (EB).
Spin down and incubate for 10 minutes at 37°C. Every 2 minutes, agitate the sample by gently flicking for 10 seconds to encourage DNA elution.
溶åºæ¶²ãç¡è²éæã«ãªããŸã§ãå°ãªããšã1åéãã°ãããäžã§ããŒãºããã¬ããåããŸãã
DNA ã©ã€ãã©ãªãŒãå«ã 15 µl ã®æº¶åºæ¶²ãåãåºããæž æœãª 1.5 ml Eppendorf DNA LoBind tube ã«ç§»ãæ¿ããŸãã
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CHECKPOINT
Qubitèå å 床èšã䜿çšããŠã溶åºãããµã³ãã«1 µlãå®éããŸãã
DNA ã©ã€ãã©ãªãŒã®æçãµã€ãºã«å¿ããŠã12 µl ã® Elution Buffer (EB) ã§æçµã®ã©ã€ãã©ãªãŒã調補ããŸãã
DNAã©ã€ãã©ãªãŒæçé· | ãããŒã»ã«ããŒãã£ã³ã°ã®é |
---|---|
éåžžã«çã (<1 kb) | 100 fmol |
çã (1-10 kb) | 35â50 fmol |
é·ã(>10 kb) | 300 ng |
(æ³šïŒ ã©ã€ãã©ãªãŒã®åéãæšå¥šå ¥åå€ä»¥äžã®å Žåã¯ãã©ã€ãã©ãªãŒã®å šéšã®éãããŒãããŠäžããã
NEB calculatorãªã©ã®èšç®æ©ã䜿ã£ãŠMassãšMolã®èšç®ãããããšãæšå¥šããŸã.
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The prepared library is used for loading onto the flow cell. Store the library on ice or at 4°C until ready to load.
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çæéã®ä¿åãç¹°ãè¿ã䜿çšããå Žåã¯__ïŒäŸããããŒã»ã«ããŠãªãã·ã¥ããŠå床ããŒãããå ŽåïŒã¯ãã©ã€ãã©ãªãŒãEppendorf DNA LoBindãã¥ãŒãã«å ¥ãã__4âã§ä¿å ããããšããå§ãããŸãã __3ãæ以äžã®é·æä¿åã®å Žåã¯ã____ã©ã€ãã©ãªãŒãEppendorf DNA LoBindãã¥ãŒãã« -80 ° Cã§ä¿å ããããšããå§ãããŸãã
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If quantities allow, the library may be diluted in Elution Buffer (EB) for splitting across multiple flow cells.
Depending on how many flow cells the library will be split across, more Elution Buffer (EB) than what is supplied in the kit will be required.
7. Priming and loading the SpotON flow cell
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- Flow Cell Flush (FCF)
- Flow Cell Tether (FCT)
- Library Solution (LIS)
- Library Beads (LIB)
- Sequencing Buffer (SB)
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- 1.5 ml Eppendorf DNA LoBind tubes
- MinIONãšGridIONã®Flow Cell
- Nuclease-free water (e.g. ThermoFisher, AM9937)
- Bovine Serum Albumin (BSA) (50 mg/ml) (e.g Invitrogen⢠UltraPure⢠BSA 50 mg/ml, AM2616)
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- MinIONãGridION ã®ããã€ã¹
- MinIONãšGridIONã®Flow Cell ã©ã€ãã·ãŒã«ã
- P1000 ããããåã³ããã
- P100 ãããããšããã
- P20 ãããããšããã
- P10 ãããããšããã
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泚æïŒæ¬ãããã¯R10.4.1ãããŒã»ã«ïŒFLO-MIN114ïŒã®ã¿ã«å¯Ÿå¿ããŠããŸãã
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æ°èŠãŠãŒã¶ãŒã¯ã åå䜿çšåã«'Priming and loading your flow cell' ã®ãããªãã芧ããã ãããšããå§ãããŸãã
Using the Library Solution
For most sequencing experiments, use the Library Beads (LIB) for loading your library onto the flow cell. However, for viscous libraries it may be difficult to load with the beads and may be appropriate to load using the Library Solution (LIS).
Sequencing BufferïŒSBïŒãLibrary BeadsïŒLIBïŒãŸãã¯Library SolutionïŒLISã䜿çšããå Žåã®ã¿ïŒãFlow Cell TetherïŒFCTïŒããã³Flow Cell FlushïŒFCFïŒã宀枩ã§è解ããŠããããã«ããã¯ã¹ã§æ··åããŸãããã®åŸãã¹ãã³ããŠã³ããŠæ°·äžã§ä¿åããŸãã
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MinION R10.4.1ãããŒã»ã«ïŒFLO-MIN114ïŒã§ã®æé©ãªã·ãŒã¯ãšã³ã¹æ§èœãšåºååäžã®ããã«ããããŒã»ã«ã®ãã©ã€ãã³ã°ããã¯ã¹ã«æçµæ¿åºŠ0.2 mg/mlã§Bovine Serum Albumin (BSA) ãæ·»å ããããšãæšå¥šããŸãã
(æ³šïŒ ãã®ä»ã®ã¢ã«ããã³ã®çš®é¡ïŒçµæãããè¡æž ã¢ã«ããã³ãªã©ïŒã®äœ¿çšã¯æšå¥šããŸããã
BSAå ¥ãã®ãããŒã»ã«ãã©ã€ãã³ã°ããã¯ã¹ã調補ããã«ã¯ãFlow Cell Flush ïŒFCFïŒãšFlow Cell TetherïŒFCTïŒã以äžã®æ瀺ã«åŸã£ãŠçµã¿åãããŸãã宀枩ã§ããããã£ã³ã°ããŠæ··åããŸãã
(æ³šïŒ ãããã®å®¹åšãå€æŽããŠããæäžã§ããä»ãŸã§ã¯å®éšã®åŸã«äœ¿ãæšãŠãã·ã³ã°ã«ãŠãŒãºãã¥ãŒãã䜿çšããŠããŸãããããããã¡ãŒåäœã®ããã«å®¹åšã«å€æŽããŠããŸãããææã¡ã®ãããã®äœ¿çšæ¹æ³ã«åŸã£ãŠãã ããã
ã·ã³ã°ã«ãŠãŒã¹ãã¥ãŒãã®å Žå: 50 mg/mlã®ãŠã·è¡æž ã¢ã«ããã³ïŒBSAïŒ5 µlãšFlow Cell Tether ïŒFCTïŒ30 µlãFlow Cell Flush ïŒFCFïŒãã¥ãŒãã«çŽæ¥å ããŸãã
ããã«å®¹åšã®å ŽåïŒ: ãããŒã»ã«ã®æ°ã«é©ãããã¥ãŒãã«ä»¥äžã®è©Šè¬ãçµã¿åãããŸãã
è©Šè¬ | ïŒãããŒã»ã«ãããã®å®¹é |
---|---|
Flow Cell Flush (FCF) | 1,170 µl |
Bovine Serum Albumin (BSA) at 50 mg/ml | 5 µl |
Flow Cell Tether (FCT) | 30 µl |
åèš | 1,205 µl |
MinIONãŸãã¯GridIONããã€ã¹ã®èãéãããããŒã»ã«ãã¯ãªããã®äžã«ã¹ã©ã€ããããŸãã ãããŒã»ã«ããã£ãããšæŒããããµãŒãã«ãã¬ãŒããšé»æ°æ¥è§Šãå¯çããŠãããã確èªããŠãã ããã
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ãããŒã»ã«ãããããã¡ãŒãåŒãäžããéã«ã¯æ³šæããŠãã ããã20ïœ30ÎŒl以äžã¯é€å»ããããã¢ã®ã¢ã¬ã€å šäœãåžžã«ãããã¡ãŒã§èŠãããŠããããšã確èªããŠäžãããã¢ã¬ã€ã«æ°æ³¡ãå ¥ããšããã¢ã«äžå¯éçãªãã¡ãŒãžãäžããå¯èœæ§ããããŸãã
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- P1000ããããã200 µ Lã«èšå®ããŠäžããã
- ããããã®å 端ããã©ã€ãã³ã°ããŒãã«å·®ã蟌ã¿ãŸãã
- ç®çãã220-230 ulãšè¡šç€ºããããŸã§ãã€ã€ã«ãåããŠã20-30 ulãåžãäžããããå°éã®ãããã¡ãŒãããããã®å
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(æ³šïŒ ãã©ã€ãã³ã°ããŒãããã»ã³ãµãŒã¢ã¬ã€å šäœã«ãããã¡ãŒãããããšã確èªããŠãã ããã
æ°æ³¡ãæ··å ¥ããªãããã«ããã©ã€ãã³ã°ããŒããããããŒã»ã«ã«ãã©ã€ãã³ã°ããã¯ã¹ã800µlæ³šå ¥ãã 5åéåŸ ã¡ãŸãããã®ïŒåéã®éã«ã以äžã®æé ã§ã©ã€ãã©ãªãŒãããŒãããæºåãããŠäžããã
Library Beads(LIB)ã®æ¶²ãããããã£ã³ã°ããããšã§ååã«æ··åããŠäžããã
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Library BeadsïŒLIBïŒãã¥ãŒãã«ã¯ããŒãºã®æžæ¿æ¶²ãå ¥ã£ãŠããŸãããããã®ããŒãºã¯ããã«æ²æ®¿ããã®ã§ã䜿çšçŽåã«æ··åããããšãéèŠã§ãã
ã»ãšãã©ã®ã·ãŒã±ã³ã¹å®éšã«ã¯Library Beads ïŒLIBïŒã®äœ¿çšãæšå¥šããŸããããããããç²æ§ã®é«ãã©ã€ãã©ãªãŒã«ã¯Library SolutionïŒLISïŒã䜿ã£ãŠãã ããã
æ°ãã1.5mlã®Eppendorf DNA LoBindãã¥ãŒãã«ãŠã©ã€ãã©ãªãŒãããŒãããæºåãããŸããïŒè©³çŽ°ã¯ä»¥äžã«èšèŒãããŠããŸããïŒ
è©Šè¬ | ïŒãããŒã»ã«ãããã®å®¹é |
---|---|
Sequencing Buffer (SB) | 37.5 µl |
Library Beads ïŒLIBïŒãŸãã¯Library SolutionïŒLISïŒïŒäœ¿çšããå ŽåïŒã¯ã䜿çšçŽåã«æ··åããŠäžããã | 25.5 µl |
DNA library | 12 µl |
åèš | 75 µl |
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- SpotON ãµã³ãã«ããŒãã«ããŒããã£ãããšæã¡äžããSpotON ãµã³ãã«ããŒãã«ã¢ã¯ã»ã¹ã§ããããã«ããŸãã
- 200ÎŒlã®ãã©ã€ãã³ã°ããã¯ã¹ããããŒã»ã«ã®ãã©ã€ãã³ã°ããŒãïŒSpotONãµã³ãã«ããŒãã§ã¯ãããŸããïŒã«æ°æ³¡ãå ¥ããªãããã«æ³šå ¥ããŸãã
調補ããã©ã€ãã©ãªãŒã¯ãããŒãããçŽåã«ããããã£ã³ã°æ··åããŠäžããã
調補ããã©ã€ãã©ãªãŒ75ÎŒlãSpotONãµã³ãã«ããŒããããããŒã»ã«ã«æ»ŽäžããŸãã次ã®äžæ»Žãè¿œå ããåã«åäžæ»ŽãããŒãã«å ¥ã£ãŠããããšã確èªããŠäžããã
SpotONãµã³ãã«ããŒãã«ããŒããã£ãããšå ã«æ»ãããã³ã°ïŒã«ããŒã®å ïŒãSpotONããŒãã«å ¥ãããšã確èªãããã©ã€ãã³ã°ããŒããéããŸãã
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ã©ã€ãã·ãŒã«ãã®å 端ãæ éã«ã¯ãªããã«åœãŠãŸãã (æ³šïŒ ã©ã€ãã·ãŒã«ããã¯ãªããã®äžã«ç¡çã«æŒã蟌ãŸãªãã§ãã ããã
ã©ã€ãã·ãŒã«ãããããŒã»ã«ã«ãã£ãããšäžãããŸããã©ã€ãã·ãŒã«ãã¯ããããŒã»ã«ã®äžéšå šäœãèŠãããã«SpotONã«ããŒã®åšå²ã«åãä»ããŸãã
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MinIONãããŒã»ã«ã©ã€ãã·ãŒã«ãã¯ããããŒã»ã«ã«åºå®ãããŠããªããããåãä»ãåŸã®åãæ±ãã«ã¯æ³šæãå¿ èŠã§ãã
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8. Data acquisition and basecalling
Overview of nanopore data analysis
For a full overview of nanopore data analysis, which includes options for basecalling and post-basecalling analysis, please refer to the Data Analysis document.
How to start sequencing
The sequencing device control, data acquisition and real-time basecalling are carried out by the MinKNOW software. Please ensure MinKNOW is installed on your computer or device. There are multiple options for how to carry out sequencing:
1. Data acquisition and basecalling in real-time using MinKNOW on a computer
Follow the instructions in the MinKNOW protocol beginning from the "Starting a sequencing run" section until the end of the "Completing a MinKNOW run" section.
2. Data acquisition and basecalling in real-time using the MinION Mk1B/Mk1D device
Follow the instructions in the MinION Mk1B user manual or the MinION Mk1D user manual.
3. Data acquisition and basecalling in real-time using the MinION Mk1C device
Follow the instructions in the MinION Mk1C user manual.
4. Data acquisition and basecalling in real-time using the GridION device
Follow the instructions in the GridION user manual.
5. Data acquisition and basecalling in real-time using the PromethION device
Follow the instructions in the PromethION user manual or the PromethION 2 Solo user manual.
6. Data acquisition using MinKNOW on a computer and basecalling at a later time using MinKNOW
Follow the instructions in the MinKNOW protocol beginning from the "Starting a sequencing run" section until the end of the "Completing a MinKNOW run" section. When setting your experiment parameters, set the Basecalling tab to OFF. After the sequencing experiment has completed, follow the instructions in the Post-run analysis section of the MinKNOW protocol.
9. ããŠã³ã¹ããªãŒã 解æ
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10. ãããŒã»ã«ã®åå©çšãšè¿åŽ
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11. Issues during DNA/RNA extraction and library preparation for Kit 14
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12. Issues during the sequencing run for Kit 14
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MinKNOW ã« ãScript failedããšè¡šç€ºãããŠãã" | ã³ã³ãã¥ãŒã¿ãŒãåèµ·åããMinKNOWãåèµ·åããŸããåé¡ã解決ããªãå Žå㯠MinKNOW log files MinKNOWãã°ãã¡ã€ã«ãåéã ããã¯ãã«ã«ãµããŒãã«ãé£çµ¡ãã ãããä»ã®ã·ãŒã¯ãšã³ã·ã³ã°ããã€ã¹ããæã¡ã§ãªãå Žåã¯ã ãããŒã»ã«ãšããŒãããã©ã€ãã©ãªãŒã4âã§ä¿ç®¡ããããšããå§ãããŸãã詳现ãªä¿ç®¡æ¹æ³ã«ã€ããŠã¯ããã¯ãã«ã«ãµããŒãã«ãåãåãããã ããã |
Pore occupancy below 40%
Observation | Possible cause | Comments and actions |
---|---|---|
Pore occupancy <40% | Not enough library was loaded on the flow cell | 10â20 fmol of good quality library can be loaded on to a MinION/GridION flow cell. Please quantify the library before loading and calculate mols using tools like the Promega Biomath Calculator, choosing "dsDNA: µg to pmol" |
Pore occupancy close to 0 | The Native Barcoding Kit was used, and ethanol was used instead of LFB or SFB at the wash step after sequencing adapter ligation | Ethanol can denature the motor protein on the sequencing adapters. Make sure the LFB or SFB buffer was used after ligation of sequencing adapters. |
Pore occupancy close to 0 | No tether on the flow cell | Tethers are adding during flow cell priming (FCT tube). Make sure FCT was added to FCF before priming. |
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å©çšã§ããªããã¢ã®å²åãå€ãå Žå | ãµã³ãã«DNAã«å«ãŸããäžçŽç© | æ¢ç¥ã®ååç©åé¡ã§ããµã³ãã«DNAã«å€ç³é¡ãå«ãŸããäºã§ãæ€ç©ã®ã²ãã DNAãšçµåããã¢ããããã¯ããã 1. æ€ç©èDNAæœåºæ³ Plant leaf DNA extraction methodããåç §ãã ããã 2. QIAGEN PowerClean Pro ãããã䜿çšããŠã¯ãªãŒã³ã¢ããããŠäžããã 3. QIAGEN REPLI-g kit.ãããã䜿çšããŠãå ã®gDNAãµã³ãã«ã§å šã²ãã å¢å¹ ãå®è¡ããŸãã |
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Reduction in sequencing speed and q-score later into the run
Observation | Possible cause | Comments and actions |
---|---|---|
Reduction in sequencing speed and q-score later into the run | Fast fuel consumption is typically seen in Kit 9 chemistry (e.g. SQK-LSK109) when the flow cell is overloaded with library. Please see the appropriate protocol for your DNA library to find the recommendation. | Add more fuel to the flow cell by following the instructions in the MinKNOW protocol. In future experiments, load lower amounts of library to the flow cell. |
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