A highly efficient poly(U)-dependent poly(Phe) synthesis system for the extreme halophile archaebacterium Halobacterium halobium
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چکیده
منابع مشابه
Putative promoter region of rRNA operon from archaebacterium Halobacterium halobium.
The 100 bp sequence from the beginning of the 16S rRNA gene of archaebacterium Halobacterium halobium and the adjacent 800 bp upstream sequence were determined. Four long (80 bp) direct repeats were found in the region preceeding the structural gene of the 16S rRNA. These repeats are proposed to constitute the promoter region of the rRNA operon of H. halobium.
متن کاملThe number, physical organization and transcription of ribosomal RNA cistrons in an archaebacterium: Halobacterium halobium.
Because it is now clear that archaebacteria may be as distinct from eubacteria as either group is from eukaryotic cells, and because a specifically archaebacterial ancestry has been proposed for the nuclear-cytoplasmic component of eukaryotic cells, we undertook to characterize, for the first time, the ribosomal RNA cistrons of an archaebacterium (Halobacterium halobium). We found these cistron...
متن کاملComplex promoter pattern of the single ribosomal RNA operon of an archaebacterium Halobacterium halobium.
The transcription of the single ribosomal RNA gene cluster is initiated at an assemblage of promoters five of which were previously mapped in the 910 base pair region in front of the 16S rRNA gene. The nucleotide sequence between positions -1680 and -910 was determined and S1 nuclease mapping revealed therein two sites corresponding to the 5' ends of the primary transcripts. These two presumabl...
متن کاملGenetic variability in Halobacterium halobium.
Halobacterium halobium exhibits an extraordinary degree of spontaneous variability. Mutants which are defective in the formation of gas vacuoles (vac) arise at a frequency of 10(-2). Other easily detectable phenotypes, like the synthesis of bacterioruberin (Rub) or the synthesis of retinal (Ret) and bacterio-opsin (Ops), the two components which form the purple membrane (Pum) of H. halobium, ar...
متن کاملEffect of monovalent cations on the malic enzyme from the extreme halophile, Halobacterium cutirubrum.
The malic enzyme from Halobacterium cutirubrum requires monovalent cations for both activation and stabilization. NaCl, the best stabilizer, is ineffective as activator; NH(4)Cl, the best activator, is a poor stabilizer. These results support the idea that the roles of salts in both processes are different.
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1985
ISSN: 0014-5793
DOI: 10.1016/0014-5793(85)80817-6