RNA is responsible for moving the code for a protein out of the nucleus and into the endoplasmic reticulum, where it is read by ribosomes. The parser also should ignore any character that cannot be a nucleotide residue, allowing the author to include numbers and other symbols that make reading the file easier. This example is not complete, however. These details would be the identity of the organism, literature references for this gene, notes on the function of the gene, its placement in a chromosome, et cetera . Section 3.4 explains how this can be done.
Genes are fundamental to describing how chromosomes work.
The current method for locating a gene on a chromosome is to first identify a region of DNA on a chromosome that contains the gene. The locus will contain all of the DNA necessary to code for a gene, but it also contains regulatory DNA and other regions of DNA that are of unknown function. If you need to attach annotation to one of these domains, then enclose the annotation with the appropriate domain start and end tags. Take a look at the insulin example to see how this type of scheme works. TOC 3.3 Protein elements Send your comments.