The Kozak sequence is not to be confused with the ribosomal binding site (RBS), that being either the 5' cap of a messenger RNA or an Internal ribosome entry site (IRES).
A secuencia Kozak non debe confundirse co sitio de unión ribosomal (RBS), que pode ser o extremo 5' cap do ARNm ou un sitio de entrada ao ribosoma interno (IRES).