|   | NUCLEIC COMPOSITION | 
Composition of nucleotide sequences
| Program name | Description | 
|---|---|
| banana | Plot bending and curvature data for B-DNA | 
| btwisted | Calculate the twisting in a B-DNA sequence | 
| chaos | Draw a chaos game representation plot for a nucleotide sequence | 
| compseq | Calculate the composition of unique words in sequences | 
| dan | Calculates nucleic acid melting temperature | 
| density | Draw a nucleic acid density plot | 
| freak | Generate residue/base frequency table or plot | 
| isochore | Plots isochores in DNA sequences | 
| sirna | Finds siRNA duplexes in mRNA | 
| wordcount | Count and extract unique words in DNA sequence(s) |