Table 1.
Stress Type | Protein Type | Genes/Operon/Protein | Location | Function | References | |
---|---|---|---|---|---|---|
Oxidative stress | Superoxide dismutase | SodA (Mn superoxide dismutase); SodB (Fe superoxide dismutase); and SodC (Cu/Zn superoxide dismutase) | sequence01_2888396_2887776, sequence01_1115542_1114961, sequence01_1123281_1123799 | Provides superoxide resistance | [47] | |
Catalase | KatE, manganese catalase, and KatG | sequence01_4550870_4549998, sequence01_3881760_3883940 | Protection against the H2O2 | [48] | ||
Hydroperoxide reductases | Organic hydroperoxide resistance protein, organic hydroperoxide resistance transcriptional regulator | sequence01_3509831_3509403, sequence01_3510368_3509916 | Detoxification of organic hydroperoxide | [49] | ||
Alkyl hydroperoxide reductase | Alkyl hydroperoxide reductase protein F (ahpF), alkyl hydroperoxide reductase protein C (ahpC), alkyl hydroperoxide reductase subunit C-like protein | sequence01_419756_421321, sequence01_419004_419567, sequence01_178141_177539 | Oxidative stress defense | [50] | ||
Thiol peroxidases | Thiol peroxidase, Tpx-type, thiol peroxidase, Bcp-type | sequence01_1694758_1695264, sequence01_2514125_2514595 | Reduces t-butyl hydroperoxide, H2O2, and cumene hydroperoxide | [51] | ||
Nitric oxide dioxygenase | Flavohemoglobin/nitric oxide dioxygenase, nitric oxide reductase FlRd-NAD(+) reductase, anaerobic nitric oxide reductase flavorubredoxin | sequence01_2597555_2598745, sequence01_4699018_4697885, sequence01_4700463_4699015 | Detoxifies free radical nitric oxide | [52] | ||
Nitrate reductase | Anaerobic nitric oxide reductase transcription regulator NorR | sequence01_4700651_4702165 | Required for the expression of anaerobic nitric oxide (NO) reductase | [53] | ||
RND transporters | AcrAB | sequence01_266663_267316 | Export of pytoalexins | [54] | ||
Heavy metal resistance | Arsenic | Arsenate reductase, arsenic resistance protein, arsenite/antimonite:H+ antiporter, arsenical pump |
ArsB, ArsA | sequence01_673660_672371, sequence01_4740871_4739582, sequence31_15724_17007, sequence01_4734229_4735986, sequence01_4742670_4740919 | Provides resistance to arsenic | [55] |
copper | Copper resistance protein, copper resistance protein | CopD, Cop O, CopC, CopB, CueR | sequence01_1510825_1509896, sequence01_1931658_1930789, sequence01_1511210_1510830, sequence01_1932031_1931660, sequence01_1512146_1511250, sequence01_290196_290606 | Provides resistance to copper | [56] | |
chromate | Chromate reductase, transport and resistance protein | ChrA, ChrB | sequence01_4722045_4720666, sequence01_4722976_4721999 | Provides resistance to chromate | [57] | |
Cobalt, zinc and cadmium | Zinc transporter | ZitB, RcnR-like protein, RcnA, RcnB | sequence01_543130_542192, sequence01_1425411_1425686, sequence01_254854_254039, sequence01_4727409_4728539, sequence01_2243421_2243753 | Cobalt–zinc–cadmium resistance | [58,59] | |
Temperature stress | RNA polymerase sigma factor | rpoE | sequence01_1576112_1575555, sequence01_2635482_2634907 | Regulates the degQ and support growth at low and high temperature | [60] | |
Stress sensor | degQ | sequence01_4075345_4073978 | Enables bacteria to grow at high temperature | [60] | ||
Csp family | CspB, CspC, CspD, CspE | sequence01_1202383_1202165, sequence01_1668932_1668744, sequence01_1913740_1913531, sequence01_730174_729953, sequence01_441915_442124 | Protects the bacteria during rapid downshift of temperature | [61] | ||
Hsp family | HspQ, HslJ, GrpE | sequence01_824127_823810, sequence01_1671988_1672425, sequence01_3834576_3835169 | Involved in protein folding and refolding, expressed in high temperature | [62] | ||
Acid stress | Acid stress protein | IbaG | sequence01_4123024_4123278 | Changes mRNA expression pattern to provide acid resistance | [63] | |
F0F1-ATPase transporter | F0F1-ATPase | sequence01_2972737_2973117, sequence01_2973126_2973941, sequence01_2974764_2975297, sequence01_2975310_2976851, sequence01_2976903_2977766, sequence01_2977798_2979180, sequence01_2979201_2979620 | Induces acid tolerance response | [64] | ||
Arginine deiminase, ornithine carbamoyltransferase | arcA, arcB | sequence01_3548646_3547930, sequence01_4107667_4110000 | Leads to production of alkaline molecules, such as ammonia to maintain pH. | [64] | ||
Alkaline stress | Membrane-bound Na+/H+ antiporter | nhaA, nhaB, nhaP2 | sequence01_3565391_3566566, sequence01_1886487_1888025, sequence01_1879396_1881129 | A membrane-bound Na+/H+ antiporter system adapts the bacteria to alkaline stress | [65] | |
Osmotic stress | Osmolarity sensory histidine kinase, transcriptional response regulator, OmpR family |
EnvZ/OmpR two-component system | sequence01_2738070_2736724, sequence01_2738786_2738067, sequence01_685891_686598, sequence01_1485204_1485944 | Mediates osmotic stress response in a number of Gram-negative bacteria | [66] |