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Mascot is a software search engine that uses mass spectrometry data to identify proteins from peptide sequence databases. [ 1 ] [ 2 ] Mascot is widely used by research facilities around the world. Mascot uses a probabilistic scoring algorithm for protein identification that was adapted from the MOWSE algorithm.
The MOWSE algorithm was developed by Darryl Pappin at the Imperial Cancer Research Fund and Alan Bleasby at the SERC Daresbury Laboratory. [2] The probability-based MOWSE score formed the basis of development of Mascot, a proprietary software for protein identification from mass spectrometry data.
These methods determined the mass of peptides using mass spectrometry, and then used the mass to search protein databases to identify the proteins [3] [4] In 1999 a more complex program was released called Mascot that integrated three types of protein/database searches: peptide molecular weights, tandem mass spectrometry from one or more ...
A typical workflow of a peptide mass fingerprinting experiment. Peptide mass fingerprinting (PMF), also known as protein fingerprinting, is an analytical technique for protein identification in which the unknown protein of interest is first cleaved into smaller peptides, whose absolute masses can be accurately measured with a mass spectrometer such as MALDI-TOF or ESI-TOF. [1]
The mass spectrum serves as a fingerprint in the sense that it is a pattern that can serve to identify the protein. [1] The method for forming a peptide-mass fingerprint, developed in 1993, consists of isolating a protein, breaking it down into individual peptides, and determining the masses of the peptides through some form of mass ...
SEQUEST is a MS data analysis program used for protein identification. It correlates collections of tandem mass spectra to peptide sequences that have been generated from databases of protein sequences. [21] SIMS Open source: SIMS was designed to perform unrestricted PTM searches over tandem mass spectra. [22] SimTandem Freeware
It contains de novo sequencing, database search, PTM identification, homology search and quantification in data analysis. Ma et al. described a new model and algorithm for de novo sequencing in PEAKS, and compared the performance with Lutefisk of several tryptic peptides of standard proteins, by the quadrupole time-of-flight (Q-TOF) mass ...
Mascot (software), a search engine which uses mass spectrometry data to identify proteins from sequence databases; Mascot (sternwheeler), a steamboat in the Pacific Northwest, U.S., in the late 1800s and early 1900s "Mascot", the NATO reporting name for the training version of the Soviet Ilyushin Il-28 bomber; Modular Approach to Software ...