55.
The Genetic Code revisited
How to represent the genetic code? Despite the fact that it is extensively
known,
the DNA mapping into proteins remains as one of the relevant discoveries
of genetics.
However, modern genomic signal processing usually requires converting symbolic-DNA
strings into
complex-valued signals in order to take full advantage of a broad variety
of DSP techniques.
The genetic code is revisited in this paper, addressing alternative representations
for it,
which can be worthy for genomic signal processing. Three original representations
are discussed.
The inner-to-out map builds on the unbalanced role of nucleotides of a
codon, and it seems to be
suitable for handling information-theory-based matter.
The two-dimensional Gray map representation
is offered as a mathematically structured map that
can help interpreting spectrograms
and scalograms.
Finally, the world-map representation for the genetic code is investigated,
which can particularly
be valuable for educational purposes, besides furnishing plenty of room
for application of distance-based algorithms.