Multiple Assemblies exist for SMTL entry 1b2e
PH AFFECTS GLU B13 SWITCHING AND SULFATE BINDING IN CUBIC INSULIN CRYSTALS (PH 6.50 COORDINATES); X-RAY DIFFRACTION 1.90 Å

	SMTL ID 1b2e.1 Ligands SULFATE ION Polypeptides PROTEIN (INSULIN a chain); PROTEIN (INSULIN b chain) Oligo-state hetero-1-1-mer
	SMTL ID 1b2e.2 Ligands SULFATE ION Polypeptides PROTEIN (INSULIN a chain); PROTEIN (INSULIN b chain) Oligo-state hetero-3-3-mer
	SMTL ID 1b2e.3 Ligands SULFATE ION Polypeptides PROTEIN (INSULIN a chain); PROTEIN (INSULIN b chain) Oligo-state hetero-2-2-mer