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Exercise3_DiffExpression.md

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Exercise III – Quantification & Differential Expression

  1. Select dataset from STAR mapping (STAR_...) in Sushi and run ‚FeatureCountApp’ with default options.

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  1. Run CountQCApp on resulting dataset with option runGO=true

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  1. Explore resulting ‚Static Report’:

Are the samples clustering by biological condition (dendrograms in ‚Sample Clustering’)?

Is it worth to generate more reads for underrepresented libraries?

Hint: Compare under Count Statistics ‚totalReads’ vs. ‚GenomicFeaturesWithReadsAboveThreshold’

  1. Run EdgeRApp on featureCounts-dataset with options

sampleGroup=Glyc_Eth

refGroup=Glucose

runGO=true

It will compare Glyc_Eth vs. Glucose.

  1. Explore ‚Static Report’:

How many genes are regulated with FC>2 & pValue<0.001 in comparison to all present genes?

Are more genes up- or down-regulated?

What is foldChange and pValue for YHR094C (HXT1, Glucose Transporter)?