2.7.1.B20	32804	-	2 * 32804, calculated from sequence	728780	
2.7.1.B20	33000	-	2 * 33000, SDS-PAGE, crystal structure	728780	
2.7.1.B20	34000	-	2 * 34000, SDS-PAGE	697882, 727430	
2.7.1.B20	64000	-	gel filtration	697882	
2.7.1.B20	68000	-	gel filtration	727430