SGP-1: Prediction and validation of homologous genes based on sequence alignments

Citation
T. Wiehe et al., SGP-1: Prediction and validation of homologous genes based on sequence alignments, GENOME RES, 11(9), 2001, pp. 1574-1583
Citations number
31
Categorie Soggetti
Molecular Biology & Genetics
Journal title
GENOME RESEARCH
ISSN journal
10889051 → ACNP
Volume
11
Issue
9
Year of publication
2001
Pages
1574 - 1583
Database
ISI
SICI code
1088-9051(200109)11:9<1574:SPAVOH>2.0.ZU;2-K
Abstract
Conventional methods of gene prediction rely on the recognition of DNA-sequ ence signals, the coding potential or the comparison of a genomic sequence with a cDNA, EST, or protein database. Reasons for limited accuracy in many circumstances are species-specific training and the incompleteness of refe rence databases. Lately, comparative genome analysis has attracted increasi ng attention. Several analysis tools that are based oil human/mouse compari sons are already available. Here, we present a program for the prediction o f protein-coding genes, termed SGP-1 (Syntenic Gene Prediction), which is b ased oil the similarity of homologous genomic sequences. In contrast to mos t existing tools, the accuracy Of SGP-1 depends little oil species-specific properties such as codon usage or the nucleotide distribution. SGP-1 may t herefore be applied to nonstandard model organisms in vertebrates as well a s in Plants, Without the need for extensive parameter training. In addition to predicting genes in large-scale genomic sequences, the program may be u seful to validate gene structure annotations from databases. To this end, S GP-1 Output also contains comparisons between predicted and annotated gene structures in HTML format. The program call be accessed via a Web server at http://soft.ice.mpg.de/sgp-1. The source code, written in ANSI C, is avail able oil request from the authors.