Tags: Protein.
In molecular biology S4 domain refers to a small protein domain found in a large ribosomal protein named S4. The S4 domain is a small domain approximately 60-65 amino acid residues long occurs in a single copy at various positions in different proteins and was originally found in pseudouridine synthases a bacterial ribosomal protein. The function of the ribosome is to read RNA and synthesise the correct protein. The S4 domain functions in RNA binding.
