Example: Sequence Statistics :: Sequence Analysis (Bioinformatics Toolbox)

Bioinformatics Toolbox

Example: Sequence Statistics

After sequencing a piece of DNA, one of the first tasks is to investigate the nucleotide content in the sequence. Starting with a DNA sequence, this example uses sequence statistics functions to determine mono-, di-, and trinucleotide content, and to locate open reading frames.

Determining Nucleotide Content — Use the MATLAB Help browser to search the Web for information.
Getting Sequence Information into MATLAB — Find a nucleotide sequence in a public database and read the sequence information into MATLAB.
Determining Nucleotide Composition — Determine the monomers and dimers, and then visualize data in graphs and bar plots.
Determining Codon Composition — Look at codons for the six reading frames.
Open Reading Frames — Locate the open reading frames using a specific genetic code.
Amino Acid Conversion and Composition — Extract the protein-coding sequence from a gene sequence and convert it to the amino acid sequence for the protein.

Sequence Analysis

Determining Nucleotide Content