Theoretical and practical metagenomic approaches to virus detection
IBI 5071 - 2017
Course program

Day
Period
Local
Class
Subject
Teacher
04/04

Tue

8:30-9:00 am

Room: Samuel Pessoa

Building: ICB2

-

Welcome and introduction

Bas and Arthur
9:00-10:15 am
Theory

Virus discovery by metagenomics - an introduction

Sample collection

Identifying viruses

Ethical issues

Bas

10:45-12:00 am
Theory

Assembly strategies for genomics and metagenomics

DNA sequencing and quality

Assembly algorithms

Assembly quality assessment

Bas
2:00-3:45 pm
Practice

Metagenome assembly

Using SSH e X2Go

Quality evaluation and trimming – FastQC, Cutadapt

Metagenome assembly – SPAdes, ABYSS

Read mapping – Bowtie, BWA

Assessing assembly quality – N50, Samtools

Data visualization – Tablet or IGV or Artemis

Bas
4:15-6:00 pm
Practice
05/04

Wed

9:00-10:15 am
Theory

Binning genomes from metagenomes

Cross-assembly

Binning signals

Estimating genome completeness

Core and flexible genome

Bas
10:45-12:00 am

Room: Samuel Pessoa

Building: ICB2

Theory

Identifying viral sequences in metagenomes

Nucleotide usage

Gene order and directionality

Marker genes and unknownness

Bas

Viral profile HMMs as marker genes

Specificity of different databases

Viral databases of orthologous groups and profile HMMs: vFams, pVOGs, Viral OGs (viral section of eggNOG)

Arthur
2:00-3:45 pm

Room: 5

Building: ICB4

Practice

Binning metagenomic contigs

Cross-assembly – crAss

Depth profiles

Metagenome binning - Metabat

Bas
4:15-6:00 pm
Practice
06/04

Thu

 

9:00-10:15 am
Theory

Profile HMMs and viral discovery

Limitations of the currently available databases

Rational design of profile HMMs

Arthur
10:45-12:00 am

Room: Samuel Pessoa

Building: ICB2

Theory

Seed-driven progressive assembly

Using seed sequences for targeted assembly - GenSeed

Profile HMMs as seeds for progressive assembly - GenSeed-HMM

Progressive assembly x global assembly

Arthur
2:00-3:45 pm
Practice

Seed-driven progressive assembly

Genseed-HMM - sequence reconstruction using profile HMMs

Case 1 - reconstructing Alpavirinae phage genomes from fecal samples

Case 2 - reconstructing DENV and ZIKV genomes from human patient samples

Arthur
4:15-6:00 pm

Room: 5

Building: ICB4

Practice
07/04

Fri

 

9:00-10:15 am
Theory

Functional annotation

Basic concepts

Automated pipelines for functional annotation

Arthur
10:45-12:00 am

Room: Samuel Pessoa

Building: ICB2

Theory

Towards understanding the function of viruses

CRISPRs

Homology

Co-abundance

Bas
2:00-3:45 pm

Room: 5

Building: ICB4

Practice

Student's presentations

Deyvid Amgarten, Nicholas di Paula, Suzana Ezquina, Gabriel Peixoto

Function interpretation

Functional annotation – EGene2

CRISPR matching

Bas and Arthur
4:15-6:00 pm

Room: 5

Building: ICB4

Practice

© 2017 Arthur Gruber

Instituto de Ciências Biomédicas - Av. Prof. Lineu Prestes, 1374 - Cidade Universitária - SP

Last update: April 10, 2017