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Título: | SABERTOOTH: protein structural alignment based on a vectorial structure representation |
Autor: | Teichert, Florian; Bastolla, Ugo CSIC ORCID; Porto, Markus | Fecha de publicación: | 31-oct-2007 | Editor: | BioMed Central | Citación: | BMC Bioinformatics 2007, 8:425 | Resumen: | [Background] The task of computing highly accurate structural alignments of proteins in very short
computation time is still challenging. This is partly due to the complexity of protein structures.
Therefore, instead of manipulating coordinates directly, matrices of inter-atomic distances, sets of
vectors between protein backbone atoms, and other reduced representations are used. These
decrease the effort of comparing large sets of coordinates, but protein structural alignment still
remains computationally expensive. [Results] We represent the topology of a protein structure through a structural profile that expresses the global effective connectivity of each residue. We have shown recently that this representation allows explicitly expressing the relationship between protein structure and protein sequence. Based on this very condensed vectorial representation, we develop a structural alignment framework that recognizes structural similarities with accuracy comparable to established alignment tools. Furthermore, our algorithm has favourable scaling of computation time with chain length. Since the algorithm is independent of the details of the structural representation, our framework can be applied to sequence-to-sequence and sequence-to-structure comparison within the same setup, and it is therefore more general than other existing tools. |
Descripción: | This article is available from: http://www.biomedcentral.com/1471-2105/8/425 Consultar los ficheros adjuntos: http://www.biomedcentral.com/1471-2105/8/425/additional/ |
URI: | http://hdl.handle.net/10261/3329 | DOI: | 10.1186/1471-2105-8-425 | ISSN: | 1471-2105 |
Aparece en las colecciones: | (CBM) Artículos |
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1471-2105-8-425.pdf | Principal | 2,16 MB | Adobe PDF | Visualizar/Abrir |
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