1. Animated Structure: The chemical formula of the currently selected amnio acid is displayed.

2. Properties : The properties of the currently selected amnio acid are displayed.

3. Sorting Criteria: Amnio acids can be sorted by class, alphabetically or by molecular weight.

4. Switch Views: Tap to switch between the library and the calculator.

1. Sequence View:

The result and the sequence view are displayed. To add an amnio acid tap an amino acid field at the bottom. To change the sequence tap the according sequence part. A table will appear. It is possible to delete an amino acid or replace an amino acid. To replace an amino acid tap and select the desired amino acid.


2. Toolbar:

Delete sequence: Tap to delete the entire sequence

Uniprot: Import sequences from uniprot.org

Delete last AA: Tap to delete the last amino acid

Monoisotopic/average: Tap to switch between the monoisotopic or average mass

PTM: Tap to add post-translational modifications