Research Article
Identification of IbeR as a Stationary-Phase Regulator in Meningitic Escherichia coli K1 that Carries a Loss-of-Function Mutation in rpoS
Table 3
Identification of differentially displayed proteins in 2D maps.
| | Spot number | Protein ID | Access number | Mass(KD)/PI (theriol) | Mass(KD)/PI
(analytic) | Peptides matched | Sequence coverage | Function category |
|
| | | | downregulated
| | |
| | D1 | dihydrolipoamide dehydrogenase
(LpdA) | gi15799800 | 50.9/5.79 | 51.0/6.05 | 249 | 47% | Central metabolism (CM): E3
component of pyruvate dehydrogenase complex | | D2 | tryptophanase (TnaA) | gi15804305 | 53.8/5.88 | 49.0/6.10 | 92 | 34% | Response to environmental
modifications (REMs), and CM: initiation
of indole signaling | | D3 | outer membrane protein C (OmpC) | gi15802768 | 40.5/4.55 | 40.5/4.55 | 53 | 50% | REM: osmotically regulated porin | | D4 | outer membrane protein C (OmpC) | gi15802768 | 40.5/4.55 | 40.5/4.60 | 7 | 20% | REM: osmotically regulated porin |
| | | | upregulated
| | |
| | U1 | elongation
factor EF-Tu (TufB) | gi15803852 | 43.4/5.3 | 43.5/5.30 | 55 | 45% | REM: binding and transport of aminoacyl-tRNA | | U2 | glyceraldehyde-3-phosphate (G-3P)
dehydrogenase A(GapA) | gi15802193 | 35.7/6.61 | 36.0/6.20 | 94 | 32% | CM: oxidation and phosphorylation
of G-3P to 1,3-bisphosphoglycerate | | U3 | outer
membrane protein 3a (OmpA) | gi15800816 | 37.3/5.99 | 30.0/5.80 | 35 | 48% | REM: maintaining cell envelope integrity | | U4 | alkyl hydroperoxide reductase(AhpC) | gi15800320 | 20.9/5.03 | 22.0/5.15 | 57 | 49% | REM: a primary scavenger of endogenous H2O2 at a low (10−5 M) concentration |
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