3.1.13.1	-	134050, 134061, 682697	
3.1.13.1	100fold	134057	
3.1.13.1	200fold	134054	
3.1.13.1	28.6fold	134055	
3.1.13.1	30fold	134049	
3.1.13.1	370fold, nearly to homogeneity	134058	
3.1.13.1	5300-26500fold, to homogeneity	134063	
3.1.13.1	all mutants, with the exception of R500K, by histidine affinity chromatography and the AKTA fast protein liquid chromatography system	709032	
3.1.13.1	anion exchange chromatography at denaturing conditions, in some cases followed by isoelectric focusing and dye binding chromatography	666317	
3.1.13.1	by affinity chromatography	700000