Motif Discovery in Drosophila
This walkthrough uses FlyBase RNA-Seq Search and the MEME suite to discover motifs that are enriched in a collection of D. melanogaster Muller F element genes that show similar expression patterns.
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FlyBase
Annotation of Conserved Motifs in Drosophila
This walkthrough uses FlyBase, FlyFactorSurvey, and Patser to identify transcription factor binding sites in the region surrounding the transcription start site of onecut in D. biarmipes.
Annotation of Transcription Start Sites in Drosophila
This walkthrough illustrates the GEP protocol for the comparative annotation of transcription start sites (TSS) in D. biarmipes. The walkthrough also includes a sample GEP TSS Report for the TSS annotation of onecut.
Searching for Transcription Start Sites in Drosophila
This PowerPoint presentation describes the recommended annotation strategy for identifying transcription start sites in Drosophila. The presentation provides an overview of the promoter architecture in D. melanogaster and describes the types of evidence that can be used to support the transcription start sites annotations.
Annotation of Other Genomic Features within the F Element Project
This presentation illustrates the unusual genomic features that GEP students have encountered as part of their annotation of Muller F Elements from Drosophila ananassae and D. bipectinata. The Muller F Elements in these two species have undergone substantial expansion compared to D. melanogaster. The presentation describes the basic strategy for identifying pseudogenes, retrogenes, partial gene duplications, pseudogene clusters, and nuclear mitochondrial DNA segments (NUMT) within these F Element annotation projects.
Annotation Strategy Guide
This document illustrates how the strategies outlined in the Annotation Instruction Sheet can be applied to more challenging annotation cases.
Annotation Instruction Sheet
This document is a more in depth description of the evidence based annotation technique used by the GEP. This document is designed to complement and extend the basic technique described in the Annotation for D. virilis PowerPoint.
Annotation of Drosophila
This PowerPoint presentation describes the recommended annotation strategy for Drosophila projects. The presentation provides an overview of the goals of the GEP annotation project, an introduction to NCBI BLAST, web databases, and the issue of reading frames and phase.
Simple Annotation Problem
This worksheet will guide you through a series of basic steps that have been found to work well for annotation of species closely related to Drosophila melanogaster. It provides a technique that can also be the foundation of annotation in other, more divergent species but in those cases other special techniques will probably be needed.
Annotation of a Drosophila Gene
This walkthrough uses the annotation of a gene on the D. biarmipes Muller F element to illustrate the GEP comparative annotation strategy. This document shows how you can investigate a feature in an annotation project using FlyBase, the Gene Record Finder, and the gene prediction and RNA-Seq evidence tracks on the GEP UCSC Genome Browser. The walkthrough then shows how you can identify the coordinates of each coding exon using NCBI BLAST, and also includes a discussion on the phases of the donor and acceptor splice sites. The walkthrough concludes by verifying the proposed gene model using the Gene Model Checker; it also includes a sample GEP Annotation Report.