You can search into the database on a peptide driven way: write a sequence in the | text field | up here, and then press the |  Search Peptides | button. You must use the aminoacid 1-letter symbols, and the maximum allowed chain is 25 characters long. You can also use the '*' wildcard for 'one or more' unknown aminoacids, and/or the '?' wildcard for 'only one' unknown aminoacid. The aminoacid symbols must be entered using upper case letters. You must only use lower case letters when you want to specify a phosphorilated residue: y, s, t (for phosphorylated forms of Tyrosine, Serine and Threonine).

You can also browse the whole peptide set, without entering any sequence, by pressing the |  Browse All Peptides | button.

You can search into the database for a protein or sub-set of proteins. In the | text field | up this sub-section, and then press the |  Search  Proteins | button. For the text-search you can use the SwissProt/TrEMBL Accession Numbers (ex.: 'P16402'/'Q1AAA9'), the SwissProt/TrEMBL ID (ex.: 'CYC_HUMAN'/'Q5JU06_HUMAN') or some part of the SwissProt/TrEMBL Description Line (ex.: 'Lipotropin beta (Beta-LPH); Lipotropin gamma (Gamma-LPH); Melanotropin'). The maximum allowed chain is 35 characters long. You can also use the '*' wildcard for 'one or more' unknown letters, and/or the '?' wildcard for 'only one' unknown letter. Some useful examples are: 'P164?0' , 'P16*', ' *kinase*'. Remember that all proteins are from human origin.

You can also browse the whole protein set, without entering any text, simply pressing the |  Browse  All Proteins | button.