Department of Biology, The Bioinformatics Centre, University of Copenhagen, Ole Maaloes Vej 5, Copenhagen, DK2200, Denmark. albin@binf.ku.dk.|Department of Biology, The Bioinformatics Centre, University of Copenhagen, Ole Maaloes Vej 5, Copenhagen, DK2200, Denmark. albin@binf.ku.dk.|Department of Biology, The Bioinformatics Centre, University of Copenhagen, Ole Maaloes Vej 5, Copenhagen, DK2200, Denmark. albin@binf.ku.dk.|Department of Biology, The Bioinformatics Centre, University of Copenhagen, Ole Maaloes Vej 5, Copenhagen, DK2200, Denmark. albin@binf.ku.dk.|Department of Biology, The Bioinformatics Centre, University of Copenhagen, Ole Maaloes Vej 5, Copenhagen, DK2200, Denmark. albin@binf.ku.dk.|Department of Biology, The Bioinformatics Centre, University of Copenhagen, Ole Maaloes Vej 5, Copenhagen, DK2200, Denmark. albin@binf.ku.dk.|Department of Biology, The Bioinformatics Centre, University of Copenhagen, Ole Maaloes Vej 5, Copenhagen, DK2200, Denmark. albin@binf.ku.dk.|Department of Biology, The Bioinformatics Centre, University of Copenhagen, Ole Maaloes Vej 5, Copenhagen, DK2200, Denmark. albin@binf.ku.dk.|Department of Microbiology and Immunology, McGill, Montreal, CA. robert.murgita@mcgill.ca.