Table 1 Selected genes with down-regulated expression profiles in the Δso2426 mutant relative to wild-type MR-1

Cellular processes

SO2280

Bicyclomycin resistance protein

0.64

0.36

0.43

0.23

0.24

0.39

SO4274

Undecaprenol kinase, putative

0.67

0.7*

0.57

0.56*

0.8*

0.36

Energy metabolism

SO0101

Formate dehydrogenase (fdnG)

0.3

0.32

0.55

0.56

0.29

0.36

SO0102

Formate dehydrogenase (fdnH)

0.37

0.31

0.72

0.53

0.25

0.67*

SO0104

FdhE protein (fdhE)

0.32

0.74*

0.45

0.61*

0.43

0.76*

SO0809

Azurin precursor (azu)

0.44

0.69

0.28

0.84

0.3

0.4

SO3034

Ferric iron reductase protein, putative

1.09*

0.61

0.91*

0.25

0.45

0.42

SO4151

Polysaccharide deacetylase family protein

0.29

0.3

0.35

0.6

0.24

0.23

SO4503

Formate dehydrogenase accessory protein FdhD

1.13*

0.56

0.53

0.5

0.28

0.36

SO4506

Iron-sulfur cluster-binding protein

0.42

0.28

0.77

0.45

0.47

0.39

SO4509

Formate dehydrogenase, alpha subunit

0.4

0.29

0.63

0.38

0.23

0.37

Hypothetical

SOA0058

Hypothetical protein

1.19

0.82*

1.0*

0.37*

0.29

0.27

SO0496

Conserved hypothetical protein

0.59

0.4

0.48

0.45

0.46

0.66*

SO1188

Conserved hypothetical protein

0.01

0.013

0.007

0.006

0.004

1.52*

SO1189

Conserved hypothetical protein

0.003

0.022

0.006

0.004

0.005

1.68*

SO1190

Conserved hypothetical protein

0.01

0.014

0.02

0.009

0.02

1.03*

SO1770

Glycerate kinase, putative

0.56

0.48

0.35

0.18

0.22

0.72*

SO1967

Hypothetical protein

0.97*

0.78*

0.34

0.55*

0.72

0.42

SO2128

Hypothetical protein

0.38

0.43

0.32

1.21

0.54

0.89*

SO2425

Hypothetical protein

0.21

0.29

0.23

0.09

0.14

1.63*

SO2469

Conserved hypothetical protein

0.35

0.53

0.68

0.62

0.46

0.96*

SO3025

Conserved hypothetical protein

0.17

0.16

0.16

0.2

0.23

0.73*

SO3062

Hypothetical protein

0.48

0.15

0.16

0.14

0.21

1.21*

SO4502

Conserved domain protein

0.93*

0.74*

0.54

0.54*

0.26

0.3

SO4504

Conserved hypothetical protein

0.2

0.06

0.15

0.14

0.23

0.13

SO4505

Conserved hypothetical protein

0.23

0.16

0.45

0.23

0.29

0.16

SO4689

Conserved hypothetical protein

0.51

0.43

0.4

0.45

0.54

0.76*

SO4719

Conserved hypothetical protein

0.23

0.36

0.36

0.31

0.18

0.62*

Protein synthesis

SO0106

Selenocysteine-specific translation elongation factor (selB)

0.38

0.72*

0.57

0.76*

0.46

0.83*

Regulatory functions

SO0916

Transcriptional regulator, MarR family

0.64

0.42

0.4

0.34

0.33

0.84*

SO0544

Sensory box histidine kinase

0.53

0.31

0.35

0.51

0.52

0.58*

SO4477

Transcriptional regulatory protein CpxR (cpxR)

0.54

0.32

0.37

0.35

0.43

0.89*

SO4567

Transcriptional regulator, AsnC family

0.41

0.39

0.44

0.79

0.34

0.45

Transport and binding proteins

SO0139

Ferritin (ftn)

0.2

0.22

0.11

0.08

0.05

0.19

SO1580

TonB-dependent heme receptor

0.32

0.39

0.37

0.19

0.23

0.92*

SO1771

Permease, GntP family

0.88*

0.23

0.43

0.37

0.14

0.2

SO2045

Cation efflux family protein

0.57

0.24

0.3

0.22

0.13

1.19*

SO3030

Siderophore biosynthesis protein AlcA (alcA)

0.67

0.27

0.81*

0.21

0.15

0.69*

SO3031

Siderophore biosynthesis protein, putative

0.52

0.34

0.3

0.16

0.08

1.37*

SO3032

Siderophore biosynthesis protein, putative

0.5

0.33

0.25

0.14

0.06

0.73*

SO3033

Ferric alcaligin siderophore receptor

0.73

0.34

0.29

0.17

0.07

0.77*

SO3063

Sodium:alanine symporter family protein

0.26

0.18

0.12

0.15

0.18

0.34

SO4150

Transporter, putative

0.07

0.12

0.11

0.34

0.27

0.3

SO4516

Ferric vibriobactin receptor (viuA)

0.59

0.54

0.37

0.21

0.16

0.67*

SO4712

ABC transporter, ATP-binding protein, putative

0.49

0.84*

0.59

0.77*

0.54

0.59*

SO4743

TonB-dependent receptor, putative

0.08

0.16

0.09

0.06

0.05

0.43