Multiple Assemblies exist for SMTL entry 1bir
RIBONUCLEASE T1, PHE 100 TO ALA MUTANT COMPLEXED WITH 2' GMP; X-RAY DIFFRACTION 1.80 Å

	SMTL ID 1bir.1 Ligands CALCIUM ION; GUANOSINE-2'-MONOPHOSPHATE Polypeptides RIBONUCLEASE T1 Oligo-state monomer
	SMTL ID 1bir.2 Ligands CALCIUM ION; GUANOSINE-2'-MONOPHOSPHATE Polypeptides RIBONUCLEASE T1 Oligo-state monomer