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Distributions of proteins involved in environmental adaptation in P. zucineum and representative alphaproteobacteria with different living habitats |
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| Species |
S. meliloti |
B. suis |
C. crescentus |
P. zucineum |
R. conorii |
G. oxydans |
|
|
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| Genome size (Mb) |
6.69 |
3.32 |
4.02 |
4.38 |
1.27 |
2.92 |
| GC content (%) |
62.2 |
57.3 |
67.2 |
71.1 |
32.4 |
60.8 |
| Habitat |
Multiple1 |
Facultative1 |
Aquatic1 |
Facultative2 |
Obligate1 |
Multiple3 |
| ECF, extracytoplasmic function sigma factor (/Mb) |
11 (1.6) |
2 (0.6) |
15 (3.7) |
17 (3.9) |
0 (0) |
2 (0.7) |
| Transcriptional regulator (/Mb) |
433 (64.7) |
149(44.9) |
183 (45.5) |
170 (38.8) |
11 (8.7) |
89 (30.1) |
| Two-component signal transduction protein (/Mb) |
113 (16.9) |
44 (13.3) |
111 (27.6) |
102 (23.3) |
7 (5.5) |
41 (14.1) |
| molecular chaperone |
23 |
12 |
14 |
33 |
8 |
14 |
| Flagellar protein |
41 |
37 |
42 |
43 |
10 |
40 |
| Chemotaxis protein |
42 |
4 |
48 |
41 |
0 |
11 |
| Pilus protein |
13 |
4 |
9 |
16 |
2 |
4 |
| Sec-dependent secretion system |
11 |
11 |
11 |
11 |
11 |
12 |
| Sec-independent secretion system |
4 |
4 |
4 |
4 |
3 |
4 |
| Type II secretory protein |
2 |
0 |
8 |
13 |
0 |
3 |
| Type IV secretory protein |
9 |
8 |
9 |
31 |
15 |
1 |
|
1The habitats of S. meliloti, B. suis, and R. conorii were indicated in a recent publication [42]. 2According to our recent publication [1], P. zucineum was classified as "facultative". 3Given that G. oxydans is often isolated from sugary niches (such as flowers and fruits) and associated soil (such as garden soil and baker's soil) [43], we classified G. oxydans as "multiple". | ||||||
Luo et al. BMC Genomics 2008 9:386 doi:10.1186/1471-2164-9-386 |
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