Title
CisMols Analyzer: identification of compositionally similar cis-element clusters in ortholog conserved regions of coordinately expressed genes.
Abstract
Combinatorial interactions of sequence-specific trans-acting factors with localized genomic cis-element clusters are the principal mechanism for regulating tissue-specific and developmental gene expression. With the emergence of expanding numbers of genome-wide expression analyses, the identification of the cis-elements responsible for specific patterns of transcriptional regulation represents a critical area of investigation. Computational methods for the identification of functional cis-regulatory modules are difficult to devise, principally because of the short length and degenerate nature of individual cis-element binding sites and the inherent complexity that is generated by combinatorial interactions within cis-clusters. Filtering candidate cis-element clusters based on phylogenetic conservation is helpful for an individual ortholog gene pair, but combining data from cis-conservation and coordinate expression across multiple genes is a more difficult problem. To approach this, we have extended an ortholog gene-pair database with additional analytical architecture to allow for the analysis and identification of maximal numbers of compositionally similar and phylogenetically conserved cis-regulatory element clusters from a list of user-selected genes. The system has been successfully tested with a series of functionally related and microarray profile-based co-expressed ortholog pairs of promoters and genes using known regulatory regions as training sets and co-expressed genes in the olfactory and immunohematologic systems as test sets. CisMols Analyzer is accessible via a Web interface at http://cismols.cchmc.org/.
Year
DOI
Venue
2005
10.1093/nar/gki486
NUCLEIC ACIDS RESEARCH
Keywords
Field
DocType
gene expression,binding site,transcription regulation,web interface
Promoter,Conserved sequence,Transcriptional regulation,Phylogenetic tree,Gene,Biology,Genomics,Regulation of gene expression,Genetics,Regulatory sequence
Journal
Volume
Issue
ISSN
33
SUPnan
0305-1048
Citations 
PageRank 
References 
3
0.70
0
Authors
7
Name
Order
Citations
PageRank
Anil G Jegga141724.88
Ashima Gupta2939.17
Sivakumar Gowrisankar3352.36
Mrunal A. Deshmukh451.09
Steven Connolly530.70
Kevin Finley630.70
Bruce J Aronow735719.70