Welcome to the 3DM walkthrough. A 3DM system is a data integration platform, we collect and integrate data about a protein superfamily.
For now we're going to work on a human androgen receptor (UniProt accession P10275) - follow this link to go to its protein detail page.
In the case of search proteins by position motif, we're looking for specific motifs on specific positions - for example we might want to find all proteins that have a tyrosine on alignment position 35 and an isoleucine on alignment position 90, then we will use the search term "Y35,I90"
You can simplify your work with the protein of interest even more by creating a custom numbering scheme - that will cause the alignment positions to be renumbered to match the residue numbering of your protein.