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. 2000 Apr;66(4):1429–1434. doi: 10.1128/aem.66.4.1429-1434.2000

TABLE 2.

Specific activities of the flavin reductase and the azo reductase in cell extracts

Enzyme Sp act (U/mg of protein) of cell extract
E. coli JM109 E. coli JM109(DE3)(pEE1001) E. coli K38(pEE1001) Sphingomonas sp. strain BN6 Sphingomonas sp. strain BN6(pRJR34)
Flavin reductase 0.09 2.0 4.0 0.008 0.7
Azo reductase 0.007 0.3 1.3 0.004 0.14