Table 1.

Expression-invariant genes in E. coli during DNA damage as identified by the DP scheme and used for moose ²

Gene	Product	Process/Function
cysG a	uroporphyrin III C-methyltransferase	Other
dnaG	DNA primase	DNA replication
dtpB	dipeptide/tripeptide:H+ symporter DtpB	Transport
ftsX	Cell division protein ftsX	Cell division
ftsY	Cell division protein ftsY	Cell division
glyY	tRNAglyY	Translation
gyrB	DNA gyrase, subunit B	DNA replication
hcaT a	putative transport protein, major facilitator superfamily (MFS)	Transport
idnT a	L-idonate / 5-ketogluconate / gluconate transporter IdnT	Transport
ihfB a	integration host factor (IHF), beta subunit	Transcription
lhr	member of ATP-dependent helicase superfamily II	DNA replication
mutM	formamidopyrimidine DNA glycosylase	DNA repair
mutY	A/G-specific adenine glycosylase	DNA repair
ndk	nucleoside diphosphate kinase	Other
nfuA	iron-sulfur cluster scaffold protein	Other
pnp	polynucleotide phosphorylase monomer	RNA processing
rbbA	ribosome-associated ATPase	Translation
rhsB	RhsB protein in rhs element	Other
rpsU	30S ribosomal subunit protein S21	Translation
rrsA a	16S ribosomal RNA (rrsA)	Translation
rrsE	16S ribosomal RNA (rrsE)	Translation
rrsG	16S ribosomal RNA (rrsG)	Translation
secB	SecB chaperone	Protein localization
spoT	Guanosine-3′,5′-bis(diphosphate) 3′-pyrophosphohydrolase	Other
ssrA a	tmRNA	Trans-translation
tfaR	Rac prophage; predicted tail fiber assembly protein	Prophage
thrW	tRNAthrW	Translation
valS	Valyl-tRNA synthetase	Translation
yedJ	predicted phosphohydrolase	Other
ynaE	Rac prophage; cold shock protein, function unknown	Prophage
yphG	conserved protein	Unknown
zntA	zinc, cadmium and lead efflux system	Transport
zupT	heavy metal divalent cation transporter ZupT	Transport

^aEstablished reference genes in E. coli (see main text and Fig. 2b) were used as an input for moose ²