1.1.99.22	expression in Escherichia coli BL21 as His-tag fusion protein	
1.1.99.22	expression in Escherichia coli BL21(DE3)pLysS as His-tag fusion protein	
1.1.99.22	gene sldBA, DNA and amino acid sequence determination and analysis	
1.1.99.22	genes sldB and sldA encoding the small and the large subunit of the enzyme