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Título: | Homology modeling provides insights into the binding mode of the PAAD/DAPIN/pyrin domain, a fourth member of the CARD/DD/DED domain family |
Autor: | Lui, Tong; Rojas Mendoza, Ana M. CSIC ORCID ; Ye, Yuzhen; Godzik, Adam | Palabras clave: | PAAD/DAPIN/Pyrin domain Phylogenetic analysis Homology modeling Function prediction |
Fecha de publicación: | sep-2003 | Editor: | John Wiley & Sons | Citación: | Protein Science 12(9): 1872-1881 (2003) | Resumen: | The PAAD/DAPIN/pyrin domain is the fourth member of the death domain superfamily, but unlike other members of this family, it is involved not only in apoptosis but also in innate immunity and several other processes. We have identified 40 PAAD domain-containing proteins by extensively searching the genomes of higher eukaryotes and viruses. Phylogenetic analyses suggest that there are five categories of PAAD domains that correlate with the domain architecture of the entire proteins. Homology models built on CARD and DD structures identified functionally important residues by studying conservation patterns on the surface of the models. Surface maps of each subfamily show different distributions of these residues, suggesting that domains from different subfamilies do not interact with each other, forming independent regulatory networks. Helix3 of PAAD is predicted to be critical for dimerization. Multiple alignment analysis and modeling suggest that it may be partly disordered, following a new paradigm for interaction proteins that are stabilized by protein–protein interactions. | Versión del editor: | http://doi.org/10.1110/ps.0359603 | URI: | http://hdl.handle.net/10261/153782 | DOI: | 10.1110/ps.0359603 | ISSN: | 0961-8368 | E-ISSN: | 1469-896X |
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