de> parses FASTA headers to extract key-value pairs,
denoted by =. For instance, in the below FASTA header it identifies
‘protein’ as ‘putative phosphoenolpyruvate synthase’ and similarly
processes other pairs. The ‘location’ tag is crucial because it allows
the extraction of ‘start’, ‘end’, and ‘strand’ information for each
gene.</p>
<pre class="text"><code>&gt;lcl|HQ3864.1_prot_ADX475.1_1 protein=putative phosphoenolpyruvate synthase protein_id=ADX66475.1 location=complement(&lt;1.