Table 1. Purification of M. alpina desaturases.

Step	FADS15 protein		FADS12 protein		FADS9-I protein
	Conc. (mg/L)	Yield (%)	Conc. (mg/L)	Yield (%)	Conc. (mg/L)	Yield (%)
Cell lysate	130.0	100.0	110.0	100.0	350.0	100.0
Centrifugation (500–10,000 g)	112.0	86.2	82.0	72.7	254.0	72.6
Detergent extract	76.0	58.5	74.8	68.2	223.0	63.7
Ni-NTA 20 mM ID(5 mM ID)	4.6(5.5)	3.5(4.2)	2.5(4.0)	2.3(3.6)	37.5(92.4)	10.7(26.4)

ID: imidazole.