Fe/Mn superoxide dismutase-encoding gene in Paracoccus denitrificans is induced by azide and expressed independently of the FNR-type regulators
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- azidy metabolismus MeSH
- bakteriální proteiny genetika metabolismus MeSH
- molekulární sekvence - údaje MeSH
- Paracoccus denitrificans enzymologie genetika MeSH
- regulace genové exprese enzymů * MeSH
- regulace genové exprese u bakterií MeSH
- regulační geny * MeSH
- sekvence aminokyselin MeSH
- superoxiddismutasa genetika metabolismus MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- azidy MeSH
- bakteriální proteiny MeSH
- superoxiddismutasa MeSH
Paracoccus denitrificans cells undergo changes in protein composition upon exposure to azide, a known activator of the fumarate-nitrate reduction (FNR)-type transcription factor NarR. One of the most prominent protein species inducible by azide is a Fe/Mn-family superoxide dismutase (SOD). Azide induces SOD at protein, mRNA transcript, and enzyme activity levels in the aerobically growing cells. Since SOD expression remains unaffected in the fnrP-, nnr-, and narR-mutant strains, we postulate a mechanism independent of the known FNR-type regulators but involving a redox signal arising from the respiratory chain.
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