Sequencing Technologies: Illumina BIG BIO Juan De la Hoz
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What is Life?
What is Life?
What is Life? Reproduction ● Cell division ○ DNA Replication
What is Life? Reproduction ● Cell division ○ DNA Replication https://socratic.org/questions/how-does-dna-replication-relate-to-mitosis
What is Life? Reproduction ● Cell division ○ DNA Replication https://socratic.org/questions/how-does-dna-replication-relate-to-mitosis
DNA Replication https://byjus.com/biology/dna-replication-machinery-enzymes
DNA Replication https://byjus.com/biology/dna-replication-machinery-enzymes
DNA Replication https://byjus.com/biology/dna-replication-machinery-enzymes
DNA Replication https://byjus.com/biology/dna-replication-machinery-enzymes
DNA Replication https://byjus.com/biology/dna-replication-machinery-enzymes
Sequencing by Synthesis
Seq by Synthesis Imagine a small DNA molecule attached to a surface. https://www.cegat.de/en/services/next-generation-sequencing
Seq by Synthesis 1. Add primers https://www.cegat.de/en/services/next-generation-sequencing
Seq by Synthesis 1. Add primers 2. Add free nucleotides 3. Add polymerase https://www.cegat.de/en/services/next-generation-sequencing
Seq by Synthesis 1. Add primers 2. Add free nucleotides 3. Add polymerase 4. Wash 5. Add light and take a photo https://www.cegat.de/en/services/next-generation-sequencing
Seq by Synthesis 1. Add primers 2. Add free nucleotides 3. Add polymerase 4. Wash 5. Add light and take a photo 6. go back to 2 https://www.cegat.de/en/services/next-generation-sequencing
Seq by Synthesis 1. Add primers 2. Add free nucleotides 3. Add polymerase 4. Wash 5. Add light and take a photo 6. go back to 2 https://www.cegat.de/en/services/next-generation-sequencing
Seq by Synthesis errors (1) https://www.cegat.de/en/services/next-generation-sequencing
DNA Replication errors (1): Main driver of evolution https://byjus.com/biology/dna-replication-machinery-enzymes
Seq by Synthesis errors (1) https://www.cegat.de/en/services/next-generation-sequencing
Seq by Synthesis https://www.cegat.de/en/services/next-generation-sequencing
Seq by Synthesis One big Advantage ● Parallelization One big Disadvantage ● Short Reads errors (2) https://www.cegat.de/en/services/next-generation-sequencing
PCR
PCR Signal Intensity can be Exponentially Amplified https://www.khanacademy.org/science/biology/biotech-dna-technology/dna-sequencing-pcr-electrophoresis/a/polymerase-chain-reaction-pcr
PCR Signal Intensity can be Exponentially Amplified https://www.khanacademy.org/science/biology/biotech-dna-technology/dna-sequencing-pcr-electrophoresis/a/polymerase-chain-reaction-pcr
PCR Adapters https://www.mclab.com/DNA-Library-Prep-Kit.html
PCR Adapters Unknown Known Known https://www.mclab.com/DNA-Library-Prep-Kit.html
PCR Adapters Cluster formation https://kscbioinformatics.wordpress.com/2017/02/13/illumina-sequencing-for-dummies-samples-are-sequenced
PCR errors (1) Adapters Cluster formation https://kscbioinformatics.wordpress.com/2017/02/13/illumina-sequencing-for-dummies-samples-are-sequenced
PCR https://kscbioinformatics.wordpress.com/2017/02/13/illumina-sequencing-for-dummies-samples-are-sequenced
Single-end or Paired-end? Fragment size (~500) Read length (150) https://support.illumina.com/bulletins/2016/04/adapter-trimming-why-are-adapter-sequences-trimmed-from-only-the--ends-of-reads.html
RECAP Library preparation Sequencing by synthesis Genomic DNA Extraction Elongation (1nt) Fragmentation Fluorescence + Photo Size selection Repeat Adapter ligation Attach to Plate (paired-end) Bridge PCR Invert molecule Repeat
FASTQ FORMAT
FASTQ FORMAT . . . . . . . . .
FASTQ FORMAT
FASTQ FORMAT
FASTQ FORMAT Quality Score Encoding: Phred+33 (0-41)
FASTQ FORMAT
FASTQ FORMAT
FASTQ FORMAT
FASTQ FORMAT
FASTQ FORMAT
FASTQ FORMAT
FASTQ FORMAT
READ ALIGNMENT Reference Genome https://binf.snipcademy.com/lessons/sequence-file-formats/sam-bam
READ ALIGNMENT Reference Genome https://binf.snipcademy.com/lessons/sequence-file-formats/sam-bam
READ ALIGNMENT Reference Genome https://binf.snipcademy.com/lessons/sequence-file-formats/sam-bam
READ ALIGNMENT Reference Genome https://binf.snipcademy.com/lessons/sequence-file-formats/sam-bam
READ ALIGNMENT Reference Genome Coverage (1X, 10X, 30X, 100X) https://binf.snipcademy.com/lessons/sequence-file-formats/sam-bam
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