IIBBA   05544
INSTITUTO DE INVESTIGACIONES BIOQUIMICAS DE BUENOS AIRES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
MISTIC: a Mutual Information Server to Infer Coevolution
Autor/es:
FRANCO L. SIMONETTI; ELIN TEPPA; ARIEL CHERNOMORETZ; MORTEN NIELSEN; CRISTINA MARINO BUSLJE
Lugar:
Berlín
Reunión:
Conferencia; ISMB/ECCB 201; 2013
Institución organizadora:
The International Society for Computational Biology
Resumen:
Identifying functionally important residues of proteins has long been
investigated using multiple sequence alignments. Besides studying the
conserved residues, another information rich approach is to examine the
correlated mutational pattern between columns of the alignment. Mutual
information (MI) from information theory can be used to analyze this
type of covariation. We have previously developed an MI algorithm that
corrects several known biases in the MI signal, such as phylogeny,
sequence redundancy and low counts. Here we present MISTIC, a
publicly available Mutual Information Server To Infer Coevolution that
brings covariation analysis closer to non-computational biologists with a
friendly-user interface and an interactive view of the results.MISTIC
uses a multiple sequence alignment as the basis for calculating mutual
information and several residue-based scores, and can also integrate
structural data when a PDB structure is provided. The server outputs a
graph with several information-related quantities using a circos
representation. This offers an integrated view of the information
contained in the multiple sequence alignment in terms of mutual
information between residue-pairs, sequence conservation and cumulative
and proximity MI scores. Furthermore, analysis and characterization of
the MI network can be done using an interactive interface which includes
network-to-structure mapping and several other network oriented tools.We
have developed a web server to study coevolution in protein families
using mutual information. The different ways of visualizing the results
complement each other well, and the interactive and user-friendly
interface make MISTIC a novel tool among other coevolution web-servers.
MISTIC is available at http://mistic.leloir.org.ar.