-\exercise{Shading and sorting alignments using sequence features}{
-\label{shadingorderingfeatsex}
-\exstep{Re-load the alignment from \ref{dasfeatretrexcercise}.
-}
-\exstep{Open the
-feature settings panel, and, after first clearing the current
-selection, press the {\em Seq Sort by Density} button a few times.}
-\exstep{Use the DAS fetcher to retrieve the Kyte and Doolittle Hydrophobicity
-scores for the protein sequences in the alignment.
-{\sl Hint: the nickname for the das source is `KD$\_$hydrophobicity'.}}
-\exstep{Change the feature settings so only the hydrophobicity features are
-displayed. Mouse over the annotation and also export and examine the GFF and
-Jalview features file to better understand how the hydrophobicity measurements
-are recorded.}
-\exstep{Apply a {\sl Graduated Colour} to the hydrophobicity annotation to
-reveal the variation in average hydrophobicity across the alignment.}
-\exstep{Select a range of alignment columns, and use one of the sort by feature buttons to order the alignment according to that region's average
-hydrophobicity.}
-\exstep{Save the alignment as a project, for use in exercise
-\ref{threshgradfeaturesex}.} }
-
-\exercise{Shading alignments with combinations of graduated feature
-colourschemes}{
-\label{threshgradfeaturesex}
-\exstep{Reusing the annotated alignment from exercise
-\ref{shadingorderingfeatsex}, experiment with the colourscheme threshold to
-highlight the most, or least hydrophobic regions. Note how the {\sl Colour} icon for the {\sl Feature Type} changes when you change the threshold type and press OK.}
-\exstep{Change the colourscheme so
-that features at the threshold are always coloured grey, and the most
-hydrophobic residues are coloured red, regardless of the threshold value
-({\em hint - there is a switch on the dialog to do this for you}).}
-\exstep{Enable the Uniprot {\em chain} annotation in the feature settings
-display and re-order the features so it is visible under the hydrophobicity
-annotation.}
-\exstep{Apply a {\sl Graduated Colour} to the {\em chain}
-annotation so that it distinguishes the different canonical names associated
-with the mature polypeptide chains.}
-\exstep{Export the alignment's sequence features using the Jalview and GFF file formats, to see how the different types of graduated feature
-colour styles are encoded. }
-}
+% \exercise{Shading and sorting alignments using sequence features}{
+% \label{shadingorderingfeatsex}
+%
+% This exercise is currently not included in the tutorial because no DAS servers
+% currently exist that yield per-residue features for any Uniprot sequence.
+%
+% \exstep{Re-load the alignment from \ref{dasfeatretrexcercise}.
+% }
+% \exstep{Open the
+% feature settings panel, and, after first clearing the current
+% selection, press the {\em Seq Sort by Density} button a few times.}
+% \exstep{Use the DAS fetcher to retrieve the Kyte and Doolittle Hydrophobicity
+% scores for the protein sequences in the alignment.
+% {\sl Hint: the nickname for the das source is `KD$\_$hydrophobicity'.}}
+% \exstep{Change the feature settings so only the hydrophobicity features are
+% displayed. Mouse over the annotation and also export and examine the GFF and
+% Jalview features file to better understand how the hydrophobicity measurements
+% are recorded.}
+% \exstep{Apply a {\sl Graduated Colour} to the hydrophobicity annotation to
+% reveal the variation in average hydrophobicity across the alignment.}
+% \exstep{Select a range of alignment columns, and use one of the sort by feature buttons to order the alignment according to that region's average
+% hydrophobicity.}
+% \exstep{Save the alignment as a project, for use in exercise
+% \ref{threshgradfeaturesex}.} }
+%
+% \exercise{Shading alignments with combinations of graduated feature
+% colourschemes}{
+% \label{threshgradfeaturesex}
+% \exstep{Reusing the annotated alignment from exercise
+% \ref{shadingorderingfeatsex}, experiment with the colourscheme threshold to
+% highlight the most, or least hydrophobic regions. Note how the {\sl Colour} icon for the {\sl Feature Type} changes when you change the threshold type and press OK.}
+% \exstep{Change the colourscheme so
+% that features at the threshold are always coloured grey, and the most
+% hydrophobic residues are coloured red, regardless of the threshold value
+% ({\em hint - there is a switch on the dialog to do this for you}).}
+% \exstep{Enable the Uniprot {\em chain} annotation in the feature settings
+% display and re-order the features so it is visible under the hydrophobicity
+% annotation.}
+% \exstep{Apply a {\sl Graduated Colour} to the {\em chain}
+% annotation so that it distinguishes the different canonical names associated
+% with the mature polypeptide chains.}
+% \exstep{Export the alignment's sequence features using the Jalview and GFF file formats, to see how the different types of graduated feature
+% colour styles are encoded. }
+% }