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Walkthrough

Parasitoid Wasps Project: Annotation Walkthrough

This exercise will walkthrough an example of annotating a wasp venom gene for the Parasitoid Wasps Project. It will discuss wasp versions of common GEP annotation tools—Genome Browser, Gene Record Finder, and Gene Model Checker—and provide background for the interpretation of data tracks that are unique to the Parasitoid Wasps Project.

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.

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 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.

A Complex Drosophila Fosmid

This fosmid from Drosophila virilis assembles into three contigs (a yellow clone). In this exercise, students must generate a final assembly by closing a gap, dealing with a mis-assembly, and improving low quality regions. Snapshots of the different stages of the assembly are stored as separate ace files.

A Simple Drosophila Fosmid

This fosmid from Drosophila virilis assembles into a single contig (a green clone). In this exercise, students will need to identify regions in the assembly where additional data is needed and design additional sequencing reactions to bring the contig up to quality standards.

Identifying and Sorting Tandem Duplications and an Inverted Repeat

Developed by the professional finishers at the WU Genome Institute (Holly Kotkiewicz and Jennifer Hodges), this walkthrough illustrates how you can use high quality discrepancies, Miniassembly, and cross_match to resolve a major misassembly in a D. ananassae project.

GEP Hybrid Assembly Walkthrough

This document illustrates how students can apply the sequence improvement protocol described in the “Sequence Improvement Protocol for GEP Hybrid Assembly Projects” document to specific problems in a D. biarmipes sequence improvement project. Specifically, the walkthrough describes techniques for correcting consensus errors and for closing gaps.

Using Consed Graphically

A training document similar to “An Introduction to Consed,” this document contains a more detailed walkthrough that explores additional functions available in Consed.