The Plant Chromatin Database http://www.chromdb.org/
Chromatin Structure & Function Page http://www.chromatin.us/chrom.html
HMG Protein Nomenclature Page http://www.nlm.nih.gov/mesh/hmg.html
The Arabidopsis Information Resource http://www.arabidopsis.org/

Plant GDB http://www.plantgdb.org/

Plaza, a resource for plant comparative genomics http://bioinformatics.psb.ugent.be/plaza/
Plant Genomics http://www.jcvi.org/cms/research/groups/plant-genomics/
European Bioinformatics Institute http://www.ebi.ac.uk/

Entrez cross-database search page http://www.ncbi.nlm.nih.gov/sites/gquery

ExPASy Proteomics tools http://www.expasy.ch/tools/

Gesellschaft für Biochemie und Molekularbiologie http://www.gbm.uni-frankfurt.de/

Deutsche Botanische Gesellschaft http://www.deutsche-botanische-gesellschaft.de/
Federation of European Societies of Plant Biology http://fespb.org/
European Plant Science Organisation http://www.epsoweb.org/

Regensburg online http://www.regensburg.de/