Table 2.

Proteins that were more abundant (change of >5-fold) at 5°C than at 22°C

Locus taga	Protein description	Functional categoryb	Normalized PCc		PC ratio (5°C/22°C)
			22°C	5°C
SCD_00181	Sulfur relay protein, TusE/DsrC/DsvC family	P	0.03548	1.12914	31.8
SCD_01927	Glutaredoxin-like protein	O	0.03040	0.57336	18.9
SCD_00850	Flagellin and related hook-associated proteins	N	0.00107	0.01660	15.5
SCD_01247	Fe-S cluster assembly scaffold IscU	C	0.00835	0.08731	10.5
SCD_00930	DEAD/DEAH box helicase domain-containing protein	LKJ	0.00281	0.02504	8.9
SCD_01712	Hypothetical protein	S	0.17117	1.39561	8.2
SCD_02129	Anaerobic ribonucleoside-triphosphate reductase	F	0.00207	0.01552	7.5
SCD_01704	Hydrogenase maturation factor	O	1.45679	10.89136	7.5
SCD_02710	Fe(II) trafficking protein YggX	CO	0.01884	0.12361	6.6
SCD_01982	Nitroreductase	C	0.00247	0.01570	6.4
SCD_00192	Guanylate kinase	F	0.00909	0.05573	6.1
SCD_02164	Cytochrome c553	C	0.09928	0.60598	6.1
SCD_03038	Protein tyrosine phosphatase	X	0.00882	0.05151	5.8
SCD_00637	RNA chaperone (CspD [CspA family protein])	K	0.01951	0.10436	5.3
SCD_02624	Pilus protein	T	0.01971	0.10504	5.3
SCD_00876	Beta-hydroxyacyl-(acyl carrier protein) dehydratase FabZ	I	0.00354	0.01772	5.0

^aLocus tags indicate gene localizations in the first version of the draft genome (GenBank accession no. BAFJ01000001 to BAFJ01000023).

^bOne-letter abbreviations indicate the COG functional categories.

^cPC values were calculated by excluding all ribosomal proteins.