Table 2.

Growth and complementation of the xox and mxaF mutant strains^a

Strain	Growth with carbon source			Complementation in methanol medium
	MeOH	MA	Formate	pCM80b	pCM86	pAP3c	pES500
WT	++	++	+	++	++	++	++
mxaF	−	++	+	−	+	−	−
xoxF1	+	++	+	ND	ND	ND	ND
xoxF2	++	++	+	ND	ND	ND	ND
xoxF1 xoxF2	−	++	+	−	−	−	++
xoxG	++	++	+	ND	ND	ND	ND
xoxF2 xoxG	++	++	+	ND	ND	ND	ND

^aAbbreviations are as follows: MeOH, methanol; MA, methylamine; WT, wild type; ND, not determined. −, no growth; + or ++, growth (a single plus indicates that colony size is about half that seen for a wild-type strain on methanol medium).

^bpCM80 is the empty parent vector for pCM86, which harbors mxaF (20).

^cpAP3 is the empty parent vector for pES500, which harbors the xoxF, xoxG, and xoxJ genes.