What do the file extensions mean that I get in m...

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What do the file extensions mean that I get in my results?

On our ClustalW submission page, when you submit a number of sequences using the default parameters, you retrieve a .aln and a .dnd file. The .aln file is the alignment and the .dnd file is a guide tree - it is not a phylogenetic tree.

To get an accurate phylogenetic tree, you need to use the .aln file as input and put this back into the ClustalW form. This time you need to choose one of the tree options - nj, phylip or dist (all methods for making phylogenetic trees). This time you will retrieve a .ph (always), .dst and/or .nj (depending on options), which are phylogenetic trees.

The .input is your input and the .output is the results that are output.

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Other Frequently Asked Questions

• How do I reference use of this service?
• How can I use ClustalW?
• How can I get the colour version of the alignment?
• How long are ClustalW results stored at the EBI?
• What type of sequences can ClustalW align?
• Why can I not see the guide tree in my browser?
• How can I see the parameter values that are used by the ClustalW program?
• Where can I download the ClustalW software from?
• Which method is used to draw the guide tree?
• Is it possible to perform bootstrap analysis or to get the Bootstrap values along with the nodes of each branch of the phylogram?
• More...