Multiple Assemblies exist for SMTL entry 2x4s
Crystal structure of MHC CLass I HLA-A2.1 bound to a peptide representing the epitope of the H5N1 (Avian Flu) Nucleoprotein; X-RAY DIFFRACTION 2.55 Å

	SMTL ID 2x4s.1 Ligands H5N1 INFLUENZA A NUCLEOPROTEIN; GLYCEROL; 2-(N-MORPHOLINO)-ETHANESULFONIC ACID Polypeptides HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2.1; BETA-2-MICROGLOBULIN Oligo-state hetero-1-1-mer
	SMTL ID 2x4s.2 Ligands H5N1 INFLUENZA A NUCLEOPROTEIN; 2-(N-MORPHOLINO)-ETHANESULFONIC ACID Polypeptides HLA CLASS I HISTOCOMPATIBILITY ANTIGEN, A-2.1; BETA-2-MICROGLOBULIN Oligo-state hetero-1-1-mer