Bioinformatics Laboratory, International Institute of Cell and Molecular Biology, ul, ks, Trojdena 4, 02-109 Warsaw, Poland. iamb@bioinfo.pl|Bioinformatics Laboratory, International Institute of Cell and Molecular Biology, ul, ks, Trojdena 4, 02-109 Warsaw, Poland. iamb@bioinfo.pl|Bioinformatics Laboratory, International Institute of Cell and Molecular Biology, ul, ks, Trojdena 4, 02-109 Warsaw, Poland. iamb@bioinfo.pl|Bioinformatics Laboratory, International Institute of Cell and Molecular Biology, ul, ks, Trojdena 4, 02-109 Warsaw, Poland. iamb@bioinfo.pl