Your Amino Acid Sequences are stored in a library, with the typical library functionalities. It includes some specific information such as size, extinction coefficient, histidine tag, isoelectric point, molecular weight, UniProt ID, and region annotations.

Other options specific to this library are displayed when right-clicking on an entry. There, you can "Create Part from Sequence" and reverse translate using a custom or remote codon table.

When using this option, a new DNA Sequence will be created containing your reverse translation.

When opening an entry, you will see the sequence, coding sequences associated, and functional protein units. In addition, the editor will be shown on a small window, which you can open to work with your sequence.

You can manually add Amino Acid Sequences by clicking on the "New" option on the library, or uploading them in bulk by selecting the Upload > Amino Acid Sequences option. Similar to other libraries, you can add tags to identify your entries.

From an entry, you can open the editor:

This shows you the Sequence Maps and Properties, including features, parts, and GenBank information. Notice that you can add features to the sequence by selecting it, and clicking on Create > New Feature when right-clicking on it.