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- Mfold web server for nucleic acid folding and hybridization prediction
- Rfam database of RNA families: consensus secondary structures and covariance models
- Oligo Calc: Oligonucleotide Properties Calculator
- RCSB PDB: A Structural View of Biology
- Expasy, the Swiss Bioinformatics Resource Portal
- Peptide Calculator
- Oligonucleotide Calculator