Abstract
OrthologID (http://nypg.bio.nyu.edu/orthologid/) allows for the rapid and accurate identification of gene orthology within a character-based phylogenetic framework. The Web application has two functions – an orthologous group search and a query orthology classification. The former determines orthologous gene sets for complete genomes and identifies diagnostic characters that define each orthologous gene set; and the latter allows for the classification of unknown query sequences to orthology groups. The first module of the Web application, the gene family generator, uses an E-value based approach to sort genes into gene families. An alignment constructor then aligns members of gene families and the resulting gene family alignments are submitted to the tree builder to obtain gene family guide trees. Finally, the diagnostics generator extracts diagnostic characters from guide trees and these diagnostics are used to determine gene orthology for query sequences.
Homology is either the cornerstone of biology or a term ripe for burning.
John Maynard Smith
Similar content being viewed by others
References
Chiu, J. C., Lee, E. K., Egan, M. G., Sarkar, I. N., Coruzzi, G. M., and DeSalle, R. (2006) OrthologID: automation of genome-scale ortholog identification within a parsimony framework. Bioinformatics 22, 699–707.
Koski, L. B., and Golding, G. B. (2001) The closest BLAST hit is often not the nearest neighbor. J Mol Evol 52, 540–42.
Sarkar, I. N., Thornton, J. W., Planet, P. J., Figurski, D. H., Schierwater, B., and DeSalle, R. (2002) An automated phylogenetic key for classifying homeoboxes. Mol Phylogenet Evol 24, 388–99.
Brower, A. V. Z., and Schawaroch, V. (1996) Three steps of homology assessment. Cladistics 12, 265–72.
Altschul, S. F., Gish, W., Miller, W., Meyers, E. W., and Lipman, D. J. (1990) Basic local alignment search tool. J Mol Biol 215, 403–10.
Tatusov, R. L., Galperin, M. Y., Natale, D. A., and Koonin, E. V. (2000) The COG database: a tool for genome-scale analysis of protein functions and evolution. Nucleic Acids Res 28, 33–6.
Dehal, P. S., and Boore, J. L. (2006) A phylogenomic gene cluster resource: the Phylogenetically Inferred Groups (PhIGs) Database. BMC Bioinformatics 7, 201.
Katoh, K., Kuma, K., Toh, H., and Miyata, T. (2005) MAFFT version 5: improvement in accuracy of multiple sequence alignment. Nucleic Acids Res 33, 511–18.
Swofford, D. L. (2003) PAUP* Phylogenetic Analysis Using Parsimony (*and Other Methods). Version 4. Sinauer Associates, Sunderland, Massachusetts.
Sarkar, I. N., Planet, P. J., Bael, T. E., Stanley, S. E., Siddall, M., DeSalle, R., and Figurski, D. H. (2002) Characteristic attributes in cancer microarrays. J Biomed Inform Apr/May; 35(2), 111–22
Eisen, J. A. (1998) Phylogenomics: improving functional predictions for uncharacterized genes by evolutionary analysis. Genome Res 8, 163–67.
Thornton, J. W., and DeSalle, R. (2000) Phylogenetics meets genomics: homology and evolution in gene families. Annu Rev Genomics Hum Gene 1, 43–72.
DePinna, M. C. C. (1991) Concepts and tests of homology in the cladistic paradigm. Cladistics 7, 367–94.
Lienau, E. K., DeSalle, R., Rosenfeld, J. A., and Planet, P. J. (2006) Reciprocal illumination in the gene content tree of life. Syst Biol 55, 441–53.
Fitch, W. M. (1970) Distinguishing homologous from analogous proteins. Syst Zool 19, 99–113.
Davis, J. J., and Nixon, K.C. (1992) Populations, genetic variation and the delimitation of phylogenetic species. Syst Biol 41, 121–35.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Humana Press, a part of Springer Science+Business Media, LLC
About this protocol
Cite this protocol
Egan, M., Lee, E.K., Chiu, J.C., Coruzzi, G., DeSalle, R. (2009). Gene Orthology Assessment with OrthologID . In: Posada, D. (eds) Bioinformatics for DNA Sequence Analysis. Methods in Molecular Biology, vol 537. Humana Press. https://doi.org/10.1007/978-1-59745-251-9_2
Download citation
DOI: https://doi.org/10.1007/978-1-59745-251-9_2
Published:
Publisher Name: Humana Press
Print ISBN: 978-1-58829-910-9
Online ISBN: 978-1-59745-251-9
eBook Packages: Springer Protocols