TABLE 1.

Relative activities of enzymes related to methanol metabolism during growth on various carbon and nitrogen sources^a

N source/C source	Relative activity (%)
	DHAS	AOD	FDH	FLD
NH4Cl/methanol	100	100	100	92
NH4Cl/glucose	NDb	ND	ND	ND
NH4Cl/glycerol	ND	20	3.3	22
NH4Cl/oleate	ND	ND	4.4	4.5
NH4Cl/d-alanine	ND	ND	3.3	25
NH4Cl/glucose + methanol	ND	ND	ND	ND
NH4Cl/glycerol + methanol	67	90	32	67
MAc/glycerol	40	32	36	80
Chld/glycerol	42	63	49	100
MA/glucose	ND	ND	31	89
Chl/glucose	ND	ND	78	75

^aCells were grown and disrupted as described in Materials and Methods. Specific activities of DHAS, AOD, FLD, and FDH for methanol medium are 0.22 ± 0.06, 2.3 ± 0.18, 0.82 ± 0.10, and 0.55 ± 0.08 U/mg of protein, respectively. 

^bND, not detected. 

^cMA, methylamine. 

^dChl, choline.