Table II.
Classification of differential proteins into functional groups and details of observed and predicted Mr and pI
Where a targeting peptide has been predicted, the Mr and pI of the processed protein is indicated in parentheses. The number of unique peptides sequenced by MS/MS is provided to indicate robustness of identification.
Gene | Protein | Spot | Changea | Fractionb | Targetc | Observed Mr | Predicted Mrd | Observed pI | Predicted pI | Numbers of Peptides |
---|---|---|---|---|---|---|---|---|---|---|
Defense related | ||||||||||
At1g20020 | FNR | 7,309 | T↑ and P↑ | Sol | Cpl | 34.5 | 41.48 (35.27) | 5.98 | 8.51 (6.20) | 5 |
At2g30860 | GST AtGSTF9 | 7,215 | A↑ | Sol | No | 28.0 | 24.13 | 5.98 | 6.17 | 7 |
At3g10920 | MSD1 | 6,110 | P↑A↓ | Sol | Mit | 26.1 | 25.44 (22.53) | 5.97 | 8.47 (6.06) | 8 |
At3g27890 | NQR | 8,101 | A↓ | Sol | No | 25.6 | 21.51 | 5.99 | 7.7 | 5 |
At4g23670 | MLP-related | 6,004 | P↑ and A↓ | Sol | No | 17.2 | 17.62 | 5.8 | 5.91 | 8 |
At5g66190 | FNR | 4,303 | A↑ | Sol | No | 34.4 | 40.64 | 5.38 | 8.32 | 7 |
At1g09340 | UDP-Glc 4-epimerase | 7,507 | P↑ | Cpl | No | 38.3 | 42.75 | 6.51 | 7.17 | 3 |
At4g01050 | Hyp-rich glycoprotein | 2,802 | P↑T↓A↑ | Cpl | Cpl | 59.9 | 49.36 (47.8) | 4.70 | 5.22 (5.21) | 3 |
At1g02920 | GST AtGSTF7 | 7,211 | P↑ P↑ | Sol | No | 27.7 28.0 | 23.58 | 6.00 5.99 | 6.14 | 5 |
8,201 | 3 | |||||||||
At1g02930 | GST AtGSTF6 | 6,109 | P↑ P↑ | Sol | No | 27.4 27.5 | 23.4 | 6.00 5.80 | 6.17 | 5 |
6,101 | 4 | |||||||||
At2g47730 | GST AtGSTF8 | 6,108 | P↑A↓ A↑ | Sol Sol | Cpl | 26.8 26.9 | 29.2 (24.1) | 6.0 5.7 | 8.90 (6.09) | 4 |
5,104 | 6 | |||||||||
At4g02520 | GST AtGSTF2 | 7,213 | P↑ | Sol | No | 28.4 | 24.11 | 6.00 | 5.92 | 5 |
At3g11630 | PrxA | 1,104 | P↓T↑ | Sol | Cpl | 24.8 | 29.1 (22.8) | 4.79 | 4.91 (5.01) | 8 |
At3g52960 | PrxIIE | 1,007 | P↑ | Sol | Cpl | 19.3 | 24.67 (17.3) | 4.9 | 9.12 (5.02) | 14 |
At5g06290 | 2-cys-PrxB | 111 | P↑ and A↓ | Sol | Cpl | 26.6 | 29.6 (24.6) | 4.55 | 4.71 (5.07) | 8 |
Metabolism | ||||||||||
Primary carbon metabolism | ||||||||||
At1g13440 | G3PDH | 8,410 | P↓ | Sol | No | 39.0 | 37.08 | 6.00 | 6.34 | 7 |
At1g32060 | PRK | 2,502 | P↓T↑ | Sol | Cpl | 42.1 | 44.72 (38.5) | 5.09 | 5.71 (5.22) | 17 |
2,613 | T↓ | Cpl | 42.9 | 5.00 | 2 | |||||
At1g53240 | NAD-dependent MDH | 6,316 | P↓ | Sol | Mit | 35.1 | 35.75 (32.37) | 5.97 | 8.54 (5.73) | 6 |
8,403 | P↑T↓ | Sol | 35.3 | 5.99 | 10 | |||||
At3g01500 | CA | 2,207 | P↓T↑ | Sol | Cpl | 28.8 | 36.12 (33.38) | 5.21 | 5.46 (5.43) | 7 |
At3g04790 | Rib-5-P isomerase putative | 1,207 | T↓ | Sol | Cpl | 29.1 | 29.30 (25.44) | 5.00 | 5.72 (4.98) | 4 |
At3g15020 | MDH | 5,202 | P↑ | Mit | Mit | 33.9 | 36.02 (32.6) | 5.67 | 8.30 (6.24) | 7 |
At5g50850 | PDH E1β | 4,301 | P↑ | Mit | Mit | 36.7 | 39.45 (35.9) | 4.85 | 5.67 (5.11) | 2 |
At5g14740 | CA2 | 4,217 | P↑ | Mit | No | 29.7 | 28.68 | 4.99 | 5.36 | 9 |
4,302 | A↓ | Sol | 31.9 | 5.36 | 7 | |||||
At2g39730 | Rubisco activase | 1,609 | T↓ | Sol | Cpl | 47.4 | 51.98 (46.26) | 4.97 | 5.87 (5.09) | 10 |
2,421 | P↑ | Mit | 45.3 | 4.63 | 4 | |||||
At3g55800 | Sedoheptulose-bisphosphatase | 1,512 | P↓ | Sol | Cpl | 39.2 | 42.79 (36.09) | 4.96 | 6.71 (5.21) | 8 |
Other metabolic roles | ||||||||||
At4g08900 | Putative arginase | 5,352 | P↑ | Mit | Mit | 35.6 | 37.55 (35.4) | 5.48 | 6.11 (5.5) | 1 |
At5g08280 | Hydroxymethylbilane synthase | 8,409 | P↑T↓ | Sol | Cpl | 36.7 | 41.53 | 5.99 | 8.63 | 7 |
At3g14210 | Lipase/acylhydrolase, | 8,510 | P↓ | Sol | Sec | 43.5 | 44.37 | 6.00 | 7.59 | 7 |
PSII | ||||||||||
At1g06680 | OEC23 | 1,404 | A↑ | Cpl | Cpl | 27.4 | 28.08 (24.90) | 4.57 | 6.90 (5.79) | 2 |
At5g66570 | OEC1 | 2,417 | T↓A↑ | Cpl | Cpl | 33.2 | 35.11 (32.10) | 4.80 | 5.68 (5.08) | 6 |
1,417 | A↑ | Cpl | 33.3 | 4.73 | 6 | |||||
Transcription | ||||||||||
At1g20980 | SPB-like 2 | 4,307 | T↑ | Sol | TMR | 33.0 | 79.75 | 5.45 | 8.38 | 3 |
At4g36690 | Splicing factor-like protein | 3,309 | P↑ | Mit | No | 34.4 | 28.86 | 4.72 | 5.17 | 2 |
At5g19510 | Elongation factor 1B-α | 311 | T↑ | Sol | No | 32.4 | 24.24 | 4.39 | 4.42 | 8 |
Protein folding and turnover | ||||||||||
At1g79210 | 20S Proteasome PAB1 | 4,222 | A↓ | Mit | No | 28.1 | 25.71 | 5.07 | 5.53 | 2 |
At3g01480 | Putative thylakoid lumen Rotamase (cyclophilin) | 503 | T↑ | Sol | Cpl | 39.3 | 47.95 | 4.50 | 5.06 | 14 |
At3g27850 | 50S ribosomal protein L12-C. | 1,309 | A↑ | Cpl | Cpl | 20.8 | 19.67 (14.1) | 4.52 | 5.99 (4.68) | 4 |
At3g62030 | Peptidylprolyl isomerase ROC4 cyclophilin | 1,105 | P↓T↑ | Sol | Cpl | 23.4 | 28.18 (20.0) | 4.9 | 8.83 (5.4) | 6 |
At5g10450 | 14-3-3 protein GF14-λ | 206u | T↑A↓ | Sol | No | 30.3 | 28.72 | 4.59 | 4.77 | 11 |
At3g63190 | Ribosome recycling factor | 9,201 | A↑ | Sol | Cpl | 27.7 | 32.22 (28.50) | 7.46 | 9.39 (9.33) | 5 |
Cellular transport and ion homeostasis | ||||||||||
At3g26520 | Aquaporin tip2.1 | 4,102 | P↓ | Mit | Mit Tmr | 25.2 | 25.89 (24.31) | 4.88 | 4.92 (4.92) | 1 |
At4g09650 | H+-ATPase-related protein CF1δ | 2,109 | P↓ | Sol | Cpl | 23.1 | 25.65 (20.4) | 5.2 | 9.04 (5.31) | 10 |
At4g11150 | V-type H+-ATPase subunit E | 7,212 | A↓ | Sol | No | 31.3 | 26.28 | 5.98 | 6.04 | 5 |
At4g20260 | Endomembrane-associated protein F1C12.180 | 1,404 | A↓ | Sol | Pm | 35.4 | 24.57 | 5.02 | 4.99 | 2 |
At4g32260 | H+-ATPase (ATPG) | 1,203 | T↑ | Cpl | Cpl | 18.2 | 23.90 (16.24) | 4.61 | 5.80 (4.78) | 7 |
AtC00120 | ATPase α-chain | 4,508 | A↑ | Mit | Cpl | 52.5 | 55.35 | 4.97 | 5.19 | 3 |
ArthCp029 | ATPase CF1β | 4,711 | A↑ | Cpl | No | 52.7 | 53.90 | 5.20 | 5.38 | 19 |
At5g09650 | Inorganic pyrophosphatase-like protein | 1,304 | T↑A↓ | Sol | Cpl | 32.9 | 33.3 | 4.70 | 5.72 | 2 |
Mitochondrial permeability transition | ||||||||||
At5g48810 | Cytochrome b5 | 3,116 | A↓ | Mit | No | 18.7 | 15.15 | 4.82 | 4.87 | 2 |
At5g15090 | Outer mitochondrial membrane protein porin 2 (VDAC 2) | 8,222 | P↓ | Mit | Mit | 29.1 | 29.00 | 7.91 | 7.97 | 8 |
At4g03280 | Rieske Fe-S protein precursor | 7,127 | P↑ | Mit | Mit | 19.3 | 22.80 (19.0) | 5.72 | 8.58 (6.07) | 2 |
Unclassified | ||||||||||
At3g16640 | TCTP-like protein | 109 | T↑A↓ | Sol | Sec | 23.7 | 18.96 | 4.6 | 4.52 | 5 |
2,107 | A↓ | Mit | 24.1 | 3 | ||||||
At2g37660 | 3-β-hydroxysteroid dehydrogenase/isomerase putative | 3,209 | T↓ | Sol | Cpl | 31.1 | 36.18 (27.62) | 5.28 | 6.23 (5.31) | 2 |
3,218 | A↓ | Sol | 31.1 | 5.29 | 3 |
Significant differences in density (P ≤ 0.05) were recorded in response to PAMP (i.e. DC3000 hrpA mutant compared with mock inoculation; P); differentials between DC3000 hrpA and wild-type DC3000 inoculations (T); and difference between DC3000 wild type and DC3000 (avrRpm1) challenge (A).
Subcellular fraction from which the protein was recovered. Sol, Soluble, Cpl, chloroplast, Mit, mitochondria.
Predicted localization of protein based on N-terminal sequence. Sec, Secreted; Mit, mitochondria targeted; Cpl, chloroplast targeted; Pm, plasma membrane; TMR, predicted transmembrane region; No, no targeting motif recognized.
Mr and pI of processed protein in parentheses. Failure to discriminate between related genes is indicated by a “u” beside the spot number.