Viral DNA-binding proteins have served as good models to study the biochemistry of transcription regulation and chromatin dynamics. Computational analysis of viral DNA-binding regulatory proteins and identification of their previously undetected homologs encoded by cellular genomes might lead to a better understanding of their function and evolution in both viral and cellular systems.
National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA. aravind@ncbi.nlm.nih.gov