OMICS PUBLICATIONS
About this Journal Contact this Journal Current issue Archive Search
Omics Publications   »  Life Sciences    »    Volume 1.1  

© The Author 2008. Published by OMICS Publishing Group. All rights reserved. For Permissions, email:journals.permissions@omicsonline.com

 
Automated Calculation of Unique Peptide Sequences for Unambiguous Identification of Highly Homologous Proteins by Mass Spectrometry
Michael Kohl,* , Gorden Redlich,*, Martin Eisenacher, Anke Schnabel, Helmut E. Meyer, Katrin Marcus and Christian Stephan
Abstract
In regular proteomics approaches proteases are used to digest the proteome into a set of peptides. Unfortunately, determining proteins on the basis of peptides implies some uncertainty since a peptide may be part of different proteins. Therefore, a targeted detection of unique peptides of particular proteins is a promising task for an unambiguous identification of a specific protein. Here we present a software solution that offers the possibility for a highly efficient and simple detection of such unique peptides. In a first step a SQL-based database of theoretically digested peptides from a given FASTA file formatted protein database is generated by choosing a protease. In a second step, in silico generated peptides from a pre-defined protein sequence are compared to this peptide database in order to identify unique peptides. Amongst others, possible applications are identification of proteins when only sparse peptide information is available or advanced proteomics techniques that require information about the uniqueness of peptides such as Multiple Reaction Monitoring (MRM).
  This Artical
» Full text
Services
» Similar articles in scholar google
» Similar articles in Pub Med
Google Scholar
» Articles by Christian Stephan
» Articles by Michael Kohl
» Articles by Helmut E. Meyer
Pub Med
» Articles by Christian Stephan
» Articles by Michael Kohl
» Articles by Helmut E. Meyer
 
Contact:phone:+49-234-32-29275; Fax: +49-234-32-14554