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### Data analysis | ||
### Data analysis | ||
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<img src="/images/materials/bioinformatics/3.svg" width="400"> | ||
<img src="/images/protocols/beer-data-analysis/krona.png" width="400"> | ||
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### Schedule | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I would not put the schedule here (but in the handbook), because we could use the slides not only for a 2-days workshop and also we are not sure about the timing There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. check |
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#### Part 1 | ||
- 10 min Social introduction | ||
- 25 min Introduction Presentation | ||
- 40 min Lab safety and Lab exercises | ||
- Pipetting | ||
- Centrifuge | ||
- Vortex Mixer | ||
- 10 min Introduction to the DNA extraction | ||
- ** 30 min Hands-on 1: Beer preparation ** | ||
- Break 45 min | ||
- ** 60 min Hands-on 2: Beer preparation ** | ||
- Break 15 min | ||
- ** 60 min Hands-on 3: DNA Extraction ** | ||
- Break 15 min | ||
- 10 min Introduction to Lirbary Preparation | ||
- ** 30 min Hands-on 4: Lirbary Preparation ** | ||
- 10 min Introduction to Nanopore Sequencing | ||
- ** 60 min Hands-on 5: Sequencing ** | ||
- 10 min Final Words and Clean Up | ||
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### Schedule | ||
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#### Part 2 | ||
- 20 min Bioinformatics Introduction | ||
- 20 min Galaxy Introduction | ||
- ** 30 min Hands-on 1: Data Analyis ** | ||
- 30 min Question and Feedback Round |
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layout: slides | ||||||||||
title: "What is Nanopore-Sequencing?" | ||||||||||
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### How to Read DNA | ||||||||||
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### How to Read DNA | ||||||||||
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[Video](https://nanoporetech.com/applications/dna-nanopore-sequencing) | ||||||||||
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### Ingredients | ||||||||||
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- **Fragmentation Mix (FRA):** Ligases (Exonucleases) to cut DNA into shorter pieces. Will cut at certain sequences. | ||||||||||
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- **Rapid Sequencing Adapter (RAP):** Ligation of adapters to the DNA fragments (leader and hairpin adapter). The leader adapter will allow the DNA to dock to the nanopore. The hairpin adapter is then for the complement strand. | ||||||||||
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- **Flush Tether (FLT):** Guides the motorprotein to the pores. | ||||||||||
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- **Seqeuncing Buffer (SQB):** For the ionic current. | ||||||||||
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- **Flush Buffer (FB):** For washing. | ||||||||||
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- **Loading Beads (LB):** To increase the molecular weight of the DNA. Helps to suck the DNA from the loading port into the flowcell. | ||||||||||
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layout: slides | ||||||||||||||||||||
title: "What is Bioinformatics?" | ||||||||||||||||||||
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### Discuss: Where can you find Bioinformatics? | ||||||||||||||||||||
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### Where can you find Bioinformatics? | ||||||||||||||||||||
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#### Chemistry, Biology, Physics: Creating Software for Devices | ||||||||||||||||||||
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<img src="/images/materials/introduction/evolution_seq_technologies.svg" width="400"> | ||||||||||||||||||||
<img src="/images/materials/bioinformatics/Blood_Glucose_Testing.jpeg" width="200"> | ||||||||||||||||||||
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### Where can you find Bioinformatics? | ||||||||||||||||||||
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#### Chemistry, Biology, Physics: Analysis of Sequence Data | ||||||||||||||||||||
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### Where can you find Bioinformatics? | ||||||||||||||||||||
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#### Chemistry, Biology, Physics: Analysis of Image Data | ||||||||||||||||||||
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<img src="/images/protocols/beer-data-analysis/krona.png" width="400"> | ||||||||||||||||||||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I am not sure to understand why krona for Image data. Maybe cell imaging would be a better example There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. check |
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### Where can you find Bioinformatics? | ||||||||||||||||||||
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#### Mathematics: Computer Science, Algorithms | ||||||||||||||||||||
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<img src="/images/materials/bioinformatics/AI.png" width="400"> | ||||||||||||||||||||
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### Bioinformatics is the Bridge | ||||||||||||||||||||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I would put also Mathematics/Statistics with Computer Science There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Check |
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### Discuss: What kind of data will we encounter? | ||||||||||||||||||||
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### Types of Data We Will Have | ||||||||||||||||||||
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- **Raw Signal** (e.g., current/time-data of MinION) | ||||||||||||||||||||
- **Sequence Data** (e.g., FASTQ data) | ||||||||||||||||||||
- **Interpreted Data** (i.e., results of Kraken) | ||||||||||||||||||||
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### Raw Signal Data | ||||||||||||||||||||
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### Sequence Data: FASTQ Format | ||||||||||||||||||||
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``` | ||||||||||||||||||||
@SEQ_ID | ||||||||||||||||||||
GATTTGGGGTTCAAAGCAGTATCGATCAAATAGTAAATCCATTTGTTCAACTCACAGTTT | ||||||||||||||||||||
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!''*((((***+))%%%++)(%%%%).1***-+*''))**55CCF>>>>>>CCCCCCC65 | ||||||||||||||||||||
``` | ||||||||||||||||||||
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- **Line 1:** Read ID | ||||||||||||||||||||
- **Line 2:** Sequence | ||||||||||||||||||||
- **Line 3:** Additional Information | ||||||||||||||||||||
- **Line 4:** Quality String; ASCII formated q-scores. | ||||||||||||||||||||
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I am afraid it is too technical (ASCII + Q-score) There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Check |
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### Interpreted Data: Kraken | ||||||||||||||||||||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Maybe better here to show the output table of Kraken, like
And after a slide with the Krona chart. What do you think? There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. check |
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. As the content here is mostly text, not slides, we could maybe move it to the Sequencing protocol as a comment for the teachers |
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layout: slides | ||||||
title: "Further Imformation about Nanopore-Sequencing" | ||||||
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### Technical Remarks | ||||||
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- Double strands are required for nanopore-sequencing, because single strands would stop at the point where you have your adapter (ds position). | ||||||
- The nanopore itself is strong enough to open up the ds. A helicase is not necessary. | ||||||
- The MinION has 4 pores for 512 channels (in total 2048 pores). | ||||||
- During the sequencing the MinION uses only one pore per channel. Every hour the lane will be checked and perhaps the MinION swaps to a different pore. | ||||||
- The quality of the reads decreases at the end of a read like in Illumina Sequencing. | ||||||
- Average length 2-10 kb reads. Error Rate 15-40%. | ||||||
- Change between template and complement strand is recognized by a specific signal of a site located in the hairpin adapter. | ||||||
- [Literature](https://www.researchgate.net/publication/317848322_Nanopore_sequencing_data_analysis_state_of_the_art_applications_and_challenges) | ||||||
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### Base Calling | ||||||
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- Decoding the raw current signal into a base. | ||||||
- Long stretches of the same base might induce a higher error (e.g., Poly-A-Tail problem). | ||||||
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### RNA Sequencing | ||||||
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- RNA sequencing is possible but so far you need to do a RNA PCR into ds strands (see technical remarks). | ||||||
- Also possible is the standard way of a reverse trascription into cDNA and then a cDNA PCR. | ||||||
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### Max Scan | ||||||
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- It is the name for Nanopore's Current Checking. | ||||||
- It will automatically determine which pores has the best electric field. | ||||||
- Then the MinION will pick those pores for seqeuncing. | ||||||
- This feature is important, since the quality can change over time for the base calling of the each pore. |
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This image is not really true. Most of the time we do not have the reference genome of the bacteria, so we look for the closest relatives. And we do not really care where it maps on the reference.
What we are more interesting is to identify a taxonomic assignation for the reads
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check