Human Single Site Analysis (SSA) is designed to detect over-represented conserved single sites in human and mouse genes.
Reference: Ho Sui, et al. (2005). oPOSSUM: Identification of over-represented
transcription factor binding sites in co-expressed genes. NAR,
33(10):3154-64. PMID: 15933209
Human Combination Site Analysis (CSA) identifies over-represented combinations of
conserved transcription factor binding sites in sets of human and mouse genes.
Reference: Huang, S., Fulton, D., et al. (2006). Identification of over-represented combinations of
transcription factor binding sites in sets of co-expressed genes. In Advances in
Bioinformatics and Computational Biology, Vol. 3. Imperial College Press, London, UK. 247-56. PDF.