In genetics and biochemistry, sequencing means to determine the primary structure (or primary sequence) of an unbranched biopolymer. Sequencing results in a symbolic linear depiction known as a sequence which succinctly summarizes much of the atomic-level structure of the sequenced molecule.
In genetics terminology, sequencing is most often restricted to determining the nucleotides of a DNA or RNA strand. Methods to perform DNA or RNA sequencing include:
Methods for performing protein
Though polysaccharides are biopolymers, it is not so common to talk of
sequencing a polysaccharide, because a symbolic linear depiction cannot
capture their tendency to branch and to bond
to one other
in different ways.
See also Genetic code