Table 2.

Representative subset of proteins identified by mass spectrometry

Cell type	ORF19a	C. albicans gene	S. cerevisiae homologb	Description of functionc
Bud	5759	SNQ2	SNQ2	ABC transporter protein involved in multidrug resistance
	1415	FRE10	FRE1	Cell-surface ferric reductase
	4118	CNT	None	Cation-coupled nucleoside transporter
	3765	RAX2	RAX2	Transmembrane protein involved in bipolar bud site selection
	7001	—	YCK1,2	Casein kinase I
Germ tube	7094	HGT12	SNF3	MFS superfamily glucose sensor/transporter
	4335	TNA1	TNA1	Nicotinic acid transporter
	2614	RSR1	RSR1	RAS-related protein
	176	OPT4	OPT2	Oligopeptide transporter
	7030	SSR1	CCW14	GPI anchor protein with a role in cell wall structure
Both	5383	PMA1	PMA1,2	Plasma membrane H(+)-ATPase
	4456	GAP4	GAP1	Putative amino acid permease; hyphal induced
	3829	PHR1	GAS1,2	GPI-anchored glycoside; role in cell wall structure
	3646	CTR1	CTR1	Copper transporter
	1760	RAS1	RAS1,2	RAS signal transduction GTPase

^a Open reading frame designation from ORF19 release of the C. albicans genome database.

^b Closest homolog found in the S. cerevisiae genome.

^c Function as indicated by experimental work or by close similarity to known genes in other organisms.