TABLE 1.

Possible functions of the proteins encoded by SrfA-dependent genes^a

cDNA (gene)	GenBank accession no.	Product	Closest homologa	Gene expression patternb
Stress response
SLK452	AY386221	Catalase B		1, spores
SSF584	AY392429	Peroxinectin		1
SLA632	AY392430	Heat shock protein 88		2
SSB695	AU037272	Unknown	Low-temperature or -salt response (46)	1
SSG693	AY392431	Unknown	DNA ligase (29)	1
SSE445	AY392432	Unknown	DNA helicase (39)	1
SLF664	AY392438	Unknown	DNA repair protein RAD50 (19)	1, spores
Cell signaling
SSK576	AY392433	Phospholipase C		2, spores
SSE393	AY392434	Unknown	5′ AMP-activated gamma subunit (27)	2
Cytoskeleton and spore coat
SSF455	D37981	Cofilin B		2, spores
SLB616	X54452	SpiAc		1, spores
SSK268/SLJ453	AY392441	Unknown	Blackjack protein, microtubule associated (19)	2, spores
sigD	AY387647	Unknownc	Spore coat proteins (28)	1, spores
Vesicle trafficking
SSM796	AY392436	Unknown	Synaptobrevin (40)	2
SSB611	AY392437	Unknown	Mitochondrial carrier protein RIM (31)	1
Cell adhesion
SSJ826	AY392438	Unknown	Tenascin X (31)	1, stalks
SSG726	AY392439	Unknown	P-selectin (24)	1, stalks
Metabolism
SLE765	AY387644	SigA malic enzymec		2, spores
SSA535	AY392440	3-Oxoacyl-acyl carrier		2, stalks
SSJ666	AY392442	Unknown	Alkaline dihydroceramidase (22)	2
Other proteins
SLA429	AY392443	Unknown	endotoxin (23)	2
SSB379	AY392444	Unknownc	RNA-binding proteins (33)	1, spores
sigB	AY387645	Unknownc	GP63 metalloproteinase (27)	1, spores
sigC	AY387646	Phg1bc		2

^aThe percentage of amino acid identity is given in parentheses.

^bExpression pattern 1 indicates genes that are detected exclusively at late developmental stages while expression pattern 2 indicates genes also detected at earlier stages.

^cGenes previously identified as SrfA dependent (3). The genes coding for SigD, SigC (phg1b), and SigB were not present on the microarrays.