Multiple Assemblies exist for SMTL entry 1b2a
PH AFFECTS GLU B13 SWITCHING AND SULFATE BINDING IN CUBIC INSULIN CRYSTALS (PH 6.00 COORDINATES); X-RAY DIFFRACTION 1.70 Å

	SMTL ID 1b2a.1 Ligands SULFATE ION Polypeptides PROTEIN (INSULIN A CHAIN); PROTEIN (INSULIN B CHAIN) Oligo-state hetero-1-1-mer
	SMTL ID 1b2a.2 Ligands SULFATE ION Polypeptides PROTEIN (INSULIN A CHAIN); PROTEIN (INSULIN B CHAIN) Oligo-state hetero-3-3-mer
	SMTL ID 1b2a.3 Ligands SULFATE ION Polypeptides PROTEIN (INSULIN A CHAIN); PROTEIN (INSULIN B CHAIN) Oligo-state hetero-2-2-mer