Format

Send to

Choose Destination
See comment in PubMed Commons below
Bioinformatics. 2008 Aug 1;24(15):1662-8. doi: 10.1093/bioinformatics/btn221. Epub 2008 May 12.

OCTOPUS: improving topology prediction by two-track ANN-based preference scores and an extended topological grammar.

Author information

  • 1Department of Biochemistry and Biophysics/Center for Biomembrane Research/Stockholm Bioinformatics Center, The Arrhenius Laboratories for Natural Sciences, Stockholm University, SE-10691 Stockholm, Sweden.

Abstract

MOTIVATION:

As alpha-helical transmembrane proteins constitute roughly 25% of a typical genome and are vital parts of many essential biological processes, structural knowledge of these proteins is necessary for increasing our understanding of such processes. Because structural knowledge of transmembrane proteins is difficult to attain experimentally, improved methods for prediction of structural features of these proteins are important.

RESULTS:

OCTOPUS, a new method for predicting transmembrane protein topology is presented and benchmarked using a dataset of 124 sequences with known structures. Using a novel combination of hidden Markov models and artificial neural networks, OCTOPUS predicts the correct topology for 94% of the sequences. In particular, OCTOPUS is the first topology predictor to fully integrate modeling of reentrant/membrane-dipping regions and transmembrane hairpins in the topological grammar.

AVAILABILITY:

OCTOPUS is available as a web server at http://octopus.cbr.su.se.

PMID:
18474507
DOI:
10.1093/bioinformatics/btn221
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Silverchair Information Systems
    Loading ...
    Support Center