3.1.7.2	48000	-	SDS-PAGE	
3.1.7.2	65000	-	sucrose density gradient centrifugation	
3.1.7.2	80000	-	calculation from sequence of the spotT gene	
3.1.7.2	130000	-	dimeric enzyme form, gel filtration	
3.1.7.2	260000	-	tetrameric enzyme form, gel filtration