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. 2005 Jan;187(1):304–319. doi: 10.1128/JB.187.1.304-319.2005

TABLE 6.

Envelope and periplasmic genes

Gene Function Log2 pH ratioa
Classb
5/7 8.7/7 8.7/5
artI Periplasmic binding protein of Arg transport system 0.286 0.655 0.369 BH
artM Arginine periplasmic binding protein −0.115 0.293 0.407 BH
btuB B-12 transporter, outer membrane receptor −0.667 0.037 0.704 AL
cirA Colicin I receptor production −0.885 0.260 1.145 AL
clpX ATPase subunit of ClpXP protease −0.361 −0.625 −0.264 BL
cpxA Periplasmic stress sensor (CpxAR) −0.461 0.230 0.691 AL
cpxP CpxAR-regulated periplasmic stress protein −3.232 1.002 4.234 AL
cpxR Periplasmic stress response regulator (CpxAR) −0.662 0.590 1.251 AL
dsbA Thiol:disulfide interchange, periplasmic 0.086 1.117 1.031 BH
dsbC Disulfide bond isomerase, periplasmic chaperone −0.288 −0.534 −0.246 BL
fadL Fatty acid transport, outer membrane −0.861 1.069 1.931 BH
fecA Outer membrane ferric citrate receptor −2.608 −1.128 1.480 NH
fecB Periplasmic ferric citrate-binding protein −2.842 −1.538 1.304 NH
fepA Ferrienterobactin outer membrane receptor −0.966 −0.289 0.676 NH
fhuD Ferric hydroxamate binding protein; hydroxamate-dependent iron uptake −0.767 −0.180 0.587 AL
fliY Cystine-binding protein, periplasmic 0.233 −0.252 −0.484 AH
hdeA Acid periplasmic chaperone 0.841 −0.326 −1.167 AH
hdeB Acid periplasmic protein 0.782 −0.622 −1.404 AH
hisJ High-affinity histidine-binding protein −0.149 0.400 0.549 BH
hlpA Periplasmic chaperone for OMPsc 0.099 −0.661 −0.759 BL
lamB Maltoporin, maltose high-affinity uptake; phage lambda receptor −4.881 −3.735 1.146 NH
lon DNA-binding, ATP-dependent protease −0.600 −1.666 −1.065 BL
malE Maltose-binding protein, periplasmic −3.425 −2.933 0.491 NH
malM Maltose operon periplasmic protein −4.643 −3.780 0.863 NH
mltB Membrane-bound murein hydrolase −0.739 −0.419 0.320 NH
nmpC Outer membrane −4.012 −0.051 3.961 AL
ompF Outer membrane porin protein 1a −2.834 −0.892 1.942 AL
ompT Outer membrane protease VII −0.815 −1.204 −0.389 BL
ompX OMP, induces RNAP-sigma E 1.523 0.439 −1.083 NL
oppA Periplasmic oligopeptide binding protein 1.358 0.406 −0.953 NL
pal Lipoprotein associated with peptidoglycan 0.532 0.379 −0.153 NL
potD Spermidine-binding membrane protein; regulates pot 0.053 0.509 0.456 BH
ppiA Rotamase; peptidylprolyl-cis-trans-isomerase A −0.526 0.231 0.757 AL
pstS High-affinity, periplasmic phosphate binding protein −2.479 −2.262 0.217 NH
rbsB d-Ribose binding protein, periplasmic −0.749 −1.150 −0.401 BL
rseB Periplasmic, binds RseA; enhances RpoE-RseA cytoplasmic complex formation 0.631 −0.105 −0.736 AH
secD SecDF-YajC inner membrane secretion complex −0.165 0.287 0.452 AL
surA Periplasmic outer membrane porin chaperone, stationary phase 0.310 0.209 −0.101 NL
tatA Twin arginine translocation 0.043 0.679 −0.636 BH
tatB Twin arginine translocation 0.075 0.446 0.372 BH
tolB Group A colicin uptake and tolerance 0.498 0.421 −0.077 NL
tpX Thiol peroxidase, antioxidant 0.637 0.178 −0.459 NL
tsx Phage T6, colicin K resistance; nucleoside channel −0.707 −0.904 −0.196 BL
ybgF TolA-binding periplasmic protein 0.312 −0.007 −0.318 AH
yceI Function unknown; periplasmic protein −0.036 1.038 1.074 BH
yhcN Periplasmic protein 3.064 −1.136 −4.199 AH
a

Values in boldface indicate significance (α = 0.001).

b

AH, Acid High; AL, Acid Low; BH, Base High; BL, Base Low; NH, Neutral High; NL, Neutral Low.

c

OMPs, outer membrane proteins.

d

RNAP, RNA polymerase.