Multiple Assemblies exist for SMTL entry 4xu1
Mycobacterium tuberculosis biotin ligase complexed with bisubstrate inhibitor 82 that incorporates a morpholine in place of the ribose; X-RAY DIFFRACTION 1.70 Å

	SMTL ID 4xu1.1 Ligands [(2S,6R)-6-(6-amino-9H-purin-9-yl)morpholin-2-yl]methyl {5-[(3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl]pentanoyl}sulfamate; 1,2-ETHANEDIOL; DIMETHYL SULFOXIDE Polypeptides Bifunctional ligase/repressor BirA Oligo-state monomer
	SMTL ID 4xu1.2 Ligands [(2S,6R)-6-(6-amino-9H-purin-9-yl)morpholin-2-yl]methyl {5-[(3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl]pentanoyl}sulfamate; DIMETHYL SULFOXIDE Polypeptides Bifunctional ligase/repressor BirA Oligo-state monomer