TABLE 2.
Identified proteins involved in cellular processes outside of aromatic and C1 catabolisma
| Functional class | Annotation (EC number) | Specific functionb | Gene | Scorec | #Pd | SCd | Normalized volumee
|
||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Succ-ML | Benz-ML | Benz-TP | Biph-ML | Biph-TP | |||||||
| Stress response | AhpC alkyl hydroperoxide reductase (1.11.1.7) | Detoxification of organic hydroperoxides | 2448 | 118 | 10 | 68 | 0.07 | 0.10 | 0.03 | 0.25 | 0.20 |
| Stress response | AhpF alkyl hydroperoxide reductase (1.8.1.9) | Detoxification of organic hydroperoxides | 2449 | 86 | 9 | 29 | 0.05 | 0.07 | 0.02 | 0.15 | 0.05 |
| Stress response | GroEL chaperonin | Involved in degradation of abnormal proteins | 7732 | 142 | 13 | 30 | 6.1 | 10 | 6.1 | 9.9 | 6.0 |
| Stress response | Heat shock protein HsIU | Proteolysis of abnormal proteins | 8238 | 53 | 8 | 18 | 0.06 | 0.25 | 0.20 | 0.18 | 0.08 |
| Stress response | Stringent starvation protein A | Unknown | 4794 | 61 | 7 | 53 | ND | 0.08 | LR | 0.25 | 0.15 |
| Stress response | PrkA serine kinase | Regulation | 6208 | 109 | 12 | 18 | 0.02 | ND | 0.16 | 0.03 | 0.12 |
| Purine metabolism | PurF (2.4.2.14) | PRPP + Gln → 5′-phosphoribosylamine + Glu | 3945 | 85 | 14 | 30 | ND | 0.03 | 0.04 | 0.01 | 0.01 |
| Purine metabolism | PurA (6.3.4.4) | GTP + IMP = l-aspartate → GDP + phosphate + N(6)-(1,2-dicarboxyethyl)-AMP | 5861 | 74 | 8 | 25 | 0.09 | 0.24 | 0.15 | 0.13 | 0.01 |
| Amino acid metabolism | Aspartyl tRNA synthetase (6.1.1.12) | Asp + tRNA → Asp-tRNA | 7923 | 61 | 7 | 15 | ND | 0.09 | ND | 0.05 | ND |
| Amino acid metabolism | Glutamine synthetase (6.3.1.2) | ATP + Glu → ADP + Gln | 5786 | 110 | 12 | 30 | 0.19 | 0.22 | LR | 0.42 | LR |
| Amino acid metabolism | Aspartate transaminase (2.6.1.1) | 2-Oxoglutarate + Asp → oxaloacetate + Glu | 7794 | 71 | 11 | 24 | ND | 0.01 | 0.01 | ND | 0.12 |
| Amino acid metabolism | Histidyl-tRNA synthetase (6.1.1.21) | His + tRNA → His-tRNA | 5852 | 55 | 11 | 28 | ND | 0.13 | 0.09 | 0.09 | 0.05 |
| Amino acid metabolism | IlvC ketol-acid reductoisomerase (1.1.1.86) | 2,3-diOH-3-methylbutanoate → 2-OH-2-methyl-3-oxobutanoate | 7236 | 67 | 7 | 26 | 0.15 | 0.41 | LR | 0.18 | 0.02 |
| Aminosugar metabolism | N-Acetylglucosamine-6-P deacetylase (3.5.1.25) | N-Acetylglucosamine-6-P → d-glucosamine-6-P + acetate | 8032 | 80 | 8 | 28 | ND | 0.04 | 0.09 | ND | ND |
| Outer membrane protein | Porin (OmpC) | Outer membrane permeability | 2049 | 114 | 8 | 40 | 0.02 | 0.02 | 0.04 | 0.08 | 0.87 |
| Protein biosynthesis | Ribosomal protein L1 | Structural constituent of ribosome | 4689 | 56 | 5 | 24 | LR | LR | LR | 0.12 | LR |
| Outer membrane protein | Porin | Outer membrane permeability | 7389 | 157 | 14 | 61 | 0.01 | ND | ND | 0.02 | 0.50 |
| Outer membrane protein | Porin (OmpC) | Outer membrane permeability | 4849 | 121 | 10 | 32 | 0.03 | ND | ND | ND | 9.6 |
| TCA cycle | Isocitrate dehydrogenase (1.1.1.42) | Isocitrate → 2-oxoglutarate + CO2 | 5150 | 71 | 13 | 31 | 0.10 | 0.05 | 0.29 | 0.06 | 0.17 |
| TCA cycle | Citrate synthase (1.7.99.5) | Oxaloacetate + acetyl CoA → citrate + CoA | 2385 | 109 | 12 | 32 | 0.08 | 1.3 | 0.66 | ND | ND |
| Fatty acid metabolism | Acetyl-CoA carboxylase, alpha subunit (6.4.1.2) | ATP + acetyl-CoA + HCO3 → malonyl-CoA | 5882 | 59 | 7 | 32 | LR | 0.04 | LR | 0.02 | 0.01 |
| Fatty acid metabolism | Hypothetical dehydrogenase (1.1.1.100) | 3-OH-acyl-ACP → 3-oxoacyl-ACP | 6307 | 66 | 5 | 33 | 0.01 | 0.04 | 0.14 | 0.02 | 0.02 |
| Fatty acid metabolism | Acyltransferase | Acyl-carrier + reactant = acyl-reactant + carrier | 6659 | 61 | 6 | 40 | 0.01 | 0.03 | 0.01 | 0.21 | 0.20 |
| DNA replication | DNA polymerase III, beta subunit (2.7.7.7) | Deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n + 1) | 8311 | 120 | 18 | 58 | ND | 0.14 | 0.27 | 0.11 | 0.11 |
| Other | 5,10 methylene THF reductase (1.7.99.5) | 5-methyl-THF → 5,10-methylene-THF | 4607 | 69 | 7 | 38 | LR | 0.05 | LR | 0.01 | 0.04 |
| Other | Phasin (granule-associated protein) | Unknown | 5805 | 79 | 7 | 43 | ND | ND | ND | 0.04 | 0.02 |
| Other | Putative Amidase (3.5.1.4) | Monocarboxylic acid amide → monocarboxylate + NH3 | 0365 | 58 | 7 | 22 | ND | 0.16 | 0.23 | 0.03 | 0.03 |
| Other | Acyl-carrier protein (ACP) phosphodiesterase (3.1.4.14) | ACP + H2O → 4-P-pantetheine + apoprotein | 4830 | 101 | 6 | 44 | 0.005 | 0.01 | 0.10 | 0.16 | 0.36 |
| Other | Hypothetical hydrolase | Unknown | 4637 | 113 | 8 | 34 | ND | 0.10 | 0.04 | 0.09 | 0.03 |
Abbreviations are as used in Table 1, plus: TCA, tricarboxylic acid; P, phosphate; PRPP, 5-phosphoribosyl 1-pyrophosphate; diOH, dihydroxy; ACP, acyl carrier protein. Normalized volumes in boldface type were at least twofold higher than in control samples (Succ-ML; Progenesis analysis, P < 0.05). Singly and doubly underlined values indicate significant up- and down-regulation, respectively, of the corresponding transcript in previous microarray experiments (Genespring; Silicon Genetics); Student t test, P < 0.10 (8). No microarray data were available for genes 2448, 5150, or 5805 or for any gene in Benz-TP samples.
For enzymes, the reaction catalyzed is indicated.
Probability-based Mowse score generated by MASCOT. In the LB400 protein database, scores greater than 52 are significant (P < 0.05).
Number of peptides matched (#P) and sequence coverage (SC) in MASCOT analysis.
Average normalized volumes over the three biological replicates under each of the tested growth conditions.