Tom Hall. North Carolina State University, Department of Microbiology. This is likely to be the final release of BioEdit. There may be some bugs. BioEdit is a mouse-driven, easy-to-use sequence alignment editor and sequence analysis program designed and written by a graduate student. BioEdit can also edit chromatograms, but I find Chromas to be nicer. MEGA also has an alignment editor, but I’ve not really used it very much. Double click on the .

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Open BioEdit from the start menu.

Sequence editing using BioEdit

To change settings first create a tutoriql alignment File, New Alignment or open an existing file. Depending on how well your reverse sequences overlap with your forwards, scroll right until they overlap with good sequences. There are 4 disks containing sequence files.

On the middle bieodit 2nd in the alignment window change mode to edit, change box next to it to insert. Drag residues with the mouse left button on. Now place the cursor in the same place in the consensus sequence. Indication of selected region on the aligment window not changed. Remove the existing sequences from the first sequence hit control-shift-end, then hit bioeitthen paste in the ones you just copied.

I paste these into Microsoft Word and use search and replace to get rid of extra details.

This highlights any columns that have different bases. I first group all the forwards together, then all the reverses. It is the only program I know of that allows you to edit, search and replace, and paste over the sequence title names independent of your sequences. Go View, save options as default. Note that sequences after bases become increasingly unreliable, and are not worth spending much time on.


Changing mode from others, the cursor moves one residue before. Select from the next next residue to the end. Click on the view menu, and check editable sequence. Highlight the residue to select. Note how many replacements it does, this is the number of samples. Then reverse compliment all of them and they should be perfectly aligned relative to the forwards.

This creates a duplicate sequence that can be edited without changing the original sequence. These are my preferences, you can use these or change them whatever you prefer. Click on Sequence menu, Pairwise alignmentAlign two sequence allow ends to slide.

Then I run a NJ analysis to see what is going on with the dataset. At the end of this phase you have done two data checks, one when you edited your original chromatogram, second when you checked any unique base pair changes.

Each group should choose one of the sequence files on the disk, and copy it from drive A to the desktop. Hit save control-shift-s and repeat for each group of sequences. When you first install BioEdit and Chromas, the default will be that BioEdit opens the chromatogram files. Save the reverse complement as a text file under a different name. Now when you double click on a chromatogram it will open in Chromas.

The reason why I paste them to a new file first is that importing from the clipboard File, Import from Clipboard will place them at the bottom of your file, which is usually not where I want them be.

If the program sticks the. I hate menus, so anything that I can use the keyboard for I tend to change it.

Guide to editing sequences with Chromas and BioEdit

It can be helpful to make sure any missing bases are labeled with an n, only use a – for indels so that you tutoriall easily distinguish which is which. Be careful to copy. There is no auto save function.


To fix this, right click on a chromatogram, select properties, it should say opens with BioEdit, hit change, browse to the Chromas executable, select it, choose always open with this program, hit ok. I then select those sequences control-shift-a bioedih, cut control-shift-c or copy them control-a and paste them control-s to the desired BioEdit file. Eventually the forwards will start to be a poor match to the reverses.

BioEdit Tutorials – Practical Bioinformatics

Paste Sequence s command pastes the sequence title and residues. BioEdit lets you modify just about anything that it does relative to menus and keyboard short cuts as well tutoriaal the default settings for displaying data.

In that case I try and get them close, but each individual one many require adjustment. Change the view type on the lower toolbar 3rd thtorial the alignment windowselect the third colored button from the left says Shade identities and similarities when you hold the mouse over it. Go Edit, Paste Over Titles.

Select all residues of all the sequences. Select them all control-acopy to clipboard control-cgo back to BioEdit, to paste these names over the existing ones. Move cursor between the residue and the previous residue. See sequence analysis references for full map.

Not copied to the system clipboard. Then I undo the cut, select all the sequences Edit, Select All Sequences, control-shift-acopy them control-a–note that copy and pasting sequences is different to any other copy and paste action.