High impact information on Natronobacterium

• We report an atomic-resolution structure for a sensory member of the microbial rhodopsin family, the phototaxis receptor sensory rhodopsin II (NpSRII), which mediates blue-light avoidance by the haloarchaeon Natronobacterium pharaonis [1].
• Halocyanin, a small blue copper protein, was isolated from the haloalkaliphilic archaeon Natronobacterium pharaonis [2].
• The primary structure of a halorhodopsin from Natronobacterium pharaonis. Structural, functional and evolutionary implications for bacterial rhodopsins and halorhodopsins [3].
• Natronomonas (Natronobacterium) pharaonis halorhodopsin (NpHR) is a transmembrane, seven-helix retinal protein of the archaeal bacterium and acts as an inward light-driven chloride ion pump in the membrane [4].
• Pharaonis phoborhodopsin (ppR), also called pharaonis sensory rhodopsin II, NpSRII, is a photoreceptor of negative phototaxis in Natronomonas (Natronobacterium) pharaonis [5].

Biological context of Natronobacterium

• Light-driven chloride ion transport by halorhodopsin from Natronobacterium pharaonis. 1. The photochemical cycle [6].

Anatomical context of Natronobacterium

• pharaonis phoborhodopsin (ppR; also called pharaonis sensory rhodopsin II, psR-II) is a photoreceptor for negative phototaxis in Natronobacterium pharaonis [7].
• Pharaonis phoborhodopsin (ppR or pharaonis sensory rhodopsin II) is a receptor of the negative phototaxis of Natronobacterium pharaonis and forms a complex with its transducer pHtrII in membranes [8].

Associations of Natronobacterium with chemical compounds

• The M intermediate was trapped by the illumination of a water glycerol suspension of phoborhodopsin from Natronobacterium pharaonis called pharaonis phoborhodopsin (ppR) with yellow light (>450 nm) at -50 degrees C. The M intermediate absorbing at 390 nm is stable in the dark at this temperature [9].
• Hydrogen-bonding alterations of the protonated Schiff base and water molecule in the chloride pump of Natronobacterium pharaonis [10].
• Aspartate 75 mutation in sensory rhodopsin II from Natronobacterium pharaonis does not influence the production of the K-like intermediate, but strongly affects its relaxation pathway [11].
• A novel prenyltransferase, farnesylgeranyl diphosphate synthase, from the haloalkaliphilic archaeon, Natronobacterium pharaonis [12].
• Ciprofloxacin inhibited growth of the haloalkaliphilic strain Natronobacterium gregoryi and of the methanogen Methanosarcina barkeri [13].

Gene context of Natronobacterium

• The blue-light receptor genes (sopII) of sensory rhodopsin (SR) II were cloned from two species, the halophilic bacteria Haloarcula vallismortis (vSR-II) and Natronobacterium pharaonis (pSR-II) [14].
• The present study extends the infrared analysis to another archaeal rhodopsin, pharaonis phoborhodopsin (ppR; also called pharaonis sensory rhodopsin-II, psR-II), involved in the negative phototaxis of Natronobacterium pharaonis [15].
• Cytochrome ba3 from Natronobacterium pharaonis--an archaeal four-subunit cytochrome-c-type oxidase [16].

Analytical, diagnostic and therapeutic context of Natronobacterium

• Sensory rhodopsin II, a repellent phototaxis receptor from Natronomonas (Natronobacterium) pharaonis (NpSRII), forms a complex with its cognate transducer (NpHtrII) [17].
• Chromophore-anion interactions in halorhodopsin from Natronobacterium pharaonis probed by time-resolved resonance Raman spectroscopy [18].
• Time-resolved FTIR studies of sensory rhodopsin II (NpSRII) from Natronobacterium pharaonis: implications for proton transport and receptor activation [19].

References