Title
BOCTOPUS: improved topology prediction of transmembrane β barrel proteins.
Abstract
Motivation: Transmembrane beta barrel proteins (TMBs) are found in the outer membrane of Gram-negative bacteria, chloroplast and mitochondria. They play a major role in the translocation machinery, pore formation, membrane anchoring and ion exchange. TMBs are also promising targets for antimicrobial drugs and vaccines. Given the difficulty in membrane protein structure determination, computational methods to identify TMBs and predict the topology of TMBs are important. Results: Here, we present BOCTOPUS; an improved method for the topology prediction of TMBs by employing a combination of support vector machines (SVMs) and Hidden Markov Models (HMMs). The SVMs and HMMs account for local and global residue preferences, respectively. Based on a 10-fold cross-validation test, BOCTOPUS performs better than all existing methods, reaching a Q3 accuracy of 87%. Further, BOCTOPUS predicted the correct number of strands for 83% proteins in the dataset. BOCTOPUS might also help in reliable identification of TMBs by using it as an additional filter to methods specialized in this task.
Year
DOI
Venue
2012
10.1093/bioinformatics/btr710
BIOINFORMATICS
Field
DocType
Volume
Transmembrane domain,Beta barrel,Chromosomal translocation,Biology,Mitochondrion,Cell biology,Transmembrane protein,Chloroplast,Bacteria,Bioinformatics,Bacterial outer membrane
Journal
28
Issue
ISSN
Citations 
4
1367-4803
10
PageRank 
References 
Authors
0.59
19
2
Name
Order
Citations
PageRank
Sikander Hayat1815.84
Arne Elofsson263356.98