+"4aa" typically functions as a brief identifier within specific scientific or technical fields. It often denotes a particular [Gene Locus](/wiki/Gene_Locus), a unique [Protein Variant](/wiki/Protein_Variant), or a designated marker in data analysis. Its interpretation is context-dependent, reflecting its role in specialized systems.
+## See also
+- [Biomarker](/wiki/Biomarker)
+- [Nomenclature](/wiki/Nomenclature)
+- [Genetic Code](/wiki/Genetic_Code)
... 1 more lines