1.21.3.1	26500	-	gel filtration	440314	
1.21.3.1	36500	38000	gel filtration and SDS-PAGE	440316	
1.21.3.1	37800	-	x * 37800, DNA sequence determination	440326	
1.21.3.1	38000	-	x * 38000, wild-type and mutants, SDS-PAGE	440319