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Commit 3cc742d6 authored by Vermaat's avatar Vermaat
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......@@ -29,6 +29,7 @@
% Make the title page.
\bodytemplate
% Todo: Include table of contents before every section
\frame{
\frametitle{Alignment methods}
\tableofcontents
......@@ -49,6 +50,78 @@
\end{itemize}
\end{frame}
\section{Sequence alignment}
\begin{frame}
\frametitle{Pairwise alignment}
\begin{center}
\includegraphics[width=\textwidth]{pairwise}
% http://en.wikipedia.org/wiki/Sequence_alignment
\end{center}
\end{frame}
\begin{frame}
\frametitle{Multiple sequence alignment}
\begin{center}
\includegraphics[width=\textwidth]{msa}
% http://en.wikipedia.org/wiki/Multiple_sequence_alignment
\end{center}
\end{frame}
\begin{frame}
\frametitle{Global vs local alignment}
\begin{center}
\includegraphics[width=\textwidth]{global}
% http://www.pitt.edu/~mcs2/teaching/biocomp/tutorials/global.html
\end{center}
\end{frame}
\begin{frame}
\frametitle{Structural alignment}
\begin{center}
\includegraphics[width=0.7\textwidth]{structural}
% http://www.biology-direct.com/content/4/1/30/figure/F3?highres=y
\end{center}
\end{frame}
\section{Assembly vs alignment}
\begin{frame}
\vspace{1em}
{\bf \em Assembly}
\begin{center}
\includegraphics[width=\textwidth]{assembly}
% http://cbsu.tc.cornell.edu/ngw2010/day2_lecture1.pdf
\end{center}
{\bf \em Alignment}
\begin{center}
\includegraphics[width=\textwidth]{alignment}
% http://cbsu.tc.cornell.edu/ngw2010/day2_lecture1.pdf
\end{center}
\end{frame}
\begin{frame}
\vspace{1em}
{\bf \em Assembly}
\begin{itemize}
\item Memory hungry
\item Needs high coverage
\end{itemize}
\vspace{1em}
{\bf \em Alignment}
\begin{itemize}
\item Easy to do in parallel
\item Restricted by reference sequence
\begin{itemize}
\item highly polymorphic regions
\item large insertions
\end{itemize}
\end{itemize}
\end{frame}
\section{Alignment methods}
\begin{frame}[fragile]
......@@ -109,120 +182,59 @@ A&0&2&3&6&7&10&10&10&12
\end{center}
\end{frame}
\section{Common problems}
\begin{frame}
\frametitle{Sequence alignment types}
\vspace{1em}
Pairwise alignment\\
{\em vs}\\
Multiple sequence alignment (MSA)
\vspace{1em}
Global alignment\\
{\em vs}\\
Local alignment
\vspace{1em}
One-dimensional sequence alignment\\
{\em vs}\\
Structural alignment
\end{frame}
\begin{frame}
\frametitle{Pairwise alignment}
\begin{center}
\includegraphics[width=\textwidth]{pairwise}
% http://en.wikipedia.org/wiki/Sequence_alignment
\end{center}
\end{frame}
\begin{frame}
\frametitle{Multiple sequence alignment}
\begin{center}
\includegraphics[width=\textwidth]{msa}
% http://en.wikipedia.org/wiki/Multiple_sequence_alignment
\end{center}
\end{frame}
\begin{frame}
\frametitle{Global vs local alignment}
\begin{center}
\includegraphics[width=\textwidth]{global}
% http://www.pitt.edu/~mcs2/teaching/biocomp/tutorials/global.html
\end{center}
\end{frame}
\begin{frame}
\frametitle{Alignment of NGS reads}
Many pairwise one-dimensional sequence alignments
\vspace{1em}
Can be global or local w.r.t. the read
\frametitle{Insertions and deletions (indels)}
\begin{itemize}
\item Local realignment around indels
\item Per-Base Alignment Qualities (BAQ)
\end{itemize}
\vspace{0.8em}
\begin{center}
\includegraphics[width=\textwidth]{ngs}
% GoNL mtDNA in IGV
\includegraphics[width=0.8\textwidth]{indel}
% GoNL mtDNA alignment
\end{center}
\end{frame}
\begin{frame}
\frametitle{Platform specifics}
\frametitle{Non-unique alignment}
How to report non-unique alignments?
\begin{itemize}
\item Paired-end sequencing
\item Color-space sequencing
\item Error profile
\item Discard entirely
\item Choose one randomly
\item Report all
\begin{itemize}
\item with best quality
\item above some quality
\end{itemize}
\end{itemize}
\end{frame}
\section{Platform specifics}
\begin{frame}
\frametitle{Paired-end sequencing}
\begin{itemize}
\item Align reads separately
\item Choose from non-unique alignments based on pairing
\end{itemize}
\vspace{1em}
\begin{center}
\includegraphics[width=\textwidth]{paired}
% http://www.pnas.org/content/109/4/1347/F1.expansion.html
\end{center}
\end{frame}
\section{Assembly vs alignment}
\begin{frame}
\vspace{1em}
{\bf \em Assembly}
\begin{center}
\includegraphics[width=\textwidth]{assembly}
% http://cbsu.tc.cornell.edu/ngw2010/day2_lecture1.pdf
\end{center}
{\bf \em Alignment}
\begin{center}
\includegraphics[width=\textwidth]{alignment}
% http://cbsu.tc.cornell.edu/ngw2010/day2_lecture1.pdf
\end{center}
\end{frame}
\section{Todo}
\begin{frame}
\vspace{1em}
{\bf \em Assembly}
\begin{itemize}
\item Memory hungry
\item Needs high coverage
\end{itemize}
\vspace{1em}
\frametitle{Platform specifics}
{\bf \em Alignment}
\begin{itemize}
\item Easy to do in parallel
\item Restricted by reference sequence
\begin{itemize}
\item highly polymorphic regions
\item large insertions
\end{itemize}
\item Paired-end sequencing
\item Color-space sequencing
\item Error profile
\end{itemize}
\end{frame}
......@@ -230,14 +242,6 @@ A&0&2&3&6&7&10&10&10&12
\frametitle{Alignment file formats}
\end{frame}
\begin{frame}
\frametitle{Non-unique alignment}
Report none
Report all above some quality
Report all with best quality
Report one randomly
\end{frame}
\end{document}
% http://lh3lh3.users.sourceforge.net/NGSalign.shtml
......
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