Mascot 2.1 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The most popular versions of the program 2.3, 2.2 and 2.1. This software is an intellectual property of Matrix Science Ltd.
The program lies within Education Tools, more precisely Science Tools. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The program's installer files are commonly found as Assembly.exe, F50RUN32.EXE, MASCOT.exe, ms-service.exe or ttssh.exe etc.
From the developer:
Mascot is a powerful search engine which uses mass spectrometry data to identify proteins from primary sequence databases.
While a number of similar programs available, Mascot is unique in that it integrates all of the proven methods of searching.
The general approach for all types of search is to take a small sample of the protein of interest and digest it with a proteolytic enzyme.
You may want to check out more software, such as Mascot Daemon, Mascot Distiller or MaCoPiX, which might be similar to Mascot.