() A soft or porous stone formed by depositions from water, usually calcareous; -- called also calcareous tufa.
() A friable volcanic rock or conglomerate, formed of consolidated cinders, or scoria.
Example Sentences:
(1) A trend towards a higher G+C content in fusA (gene encoding elongation factor (EF)-G) and tufA (gene encoding EF-Tu) in S. typhimurium is noted.
(2) The combination of tufA(Aa) and a rpsD12 ribosomal mutation is lethal at room temperature and the double-mutant strain has an elevated temperature optimum (42 degrees C) for growth rate, translation rate and nonsense suppression.
(3) Furthermore, the tufA mutation enhances the cellular growth rate of the rpsL mutant, whereas it decreases growth of strains with normal ribosomes.
(4) Previous work suggested that the tufA gene, encoding protein synthesis elongation factor Tu, was transferred from the chloroplast to the nucleus within the green algal lineage giving rise to land plants.
(5) The observations that introduction of a tufA(+) region makes the resistant strain sensitive to the antibiotic and that transduction of tufB1 into a recipient other than E. coli D22 yields kirromycin-sensitive progeny support these conclusions.
(6) Potential ribosome binding sites are located 58 and 32 positions upstream of the tufA and ORF206 start codon, respectively.
(7) We have replaced the ribosomal binding site (RBS) of the lacZ gene of E. coli by those of the maturation (A) gene of phage MS2 and that of the tufA gene.
(8) By examining heteroduplexes between restriction endonuclease-generated fragments of DNA containing the tufA, fus, and tufB genes, we have demonstrated that the fus and tufA genes are intimately related physically in one of two possible arrangements.
(9) The proof for the presence of tufA gene in pTUAl is based on the following observations: (1) ability of pTUAl DNA and is EcoRI fragments to direct synthesis of EF-Tu in a cell-free protein synthesizing system; and (2) RNA .
(10) It thus became possible to study the consequences for growth of tufA inactivation by insertion of bacteriophage Mu.
(11) Genetic data suggest that pTu is the product of the tufA and tufB genes.
(12) Therefore, phenotypic expression of kirromycin resistance in vivo appears to be only possible if the EF-Tu mutant lacks an active tufA gene, a property likely to be inherited from the parental D22 strain.
(13) Facebook Twitter Pinterest Juvenile hart’s tongues, among mosses embedded in tufa.
(14) Sequence analysis revealed an ORF of 99 amino acids (including the N-terminal processed methionine) at a position 477 bp from the 3' end of tufA but on the opposite strand.
(15) We conclude the following: (a) The tufA and tufB messengers have different half lives (3.0 and 2.4 min, respectively).
(16) Filter hybridizations reveal a chloroplast tufA gene in all Ulvophyceae and Chlorophyceae and in some but not all Charophyceae.
(17) The G domain of elongation factor Tu (EF-Tu), representing the N-terminal half of the factor according to its three-dimensional model traced at high resolution, has been isolated by genetic manipulation of tufA and purified to homogeneity.
(18) The water is sharply alkaline, with a pH value of over nine, and thanks in part to the water's purity – no phosphates here – the formation of tufa continues on the Lathkill when it has ceased on most other rivers.
(19) The tufA gene, one of two genes in Escherichia coli encoding elongation factor Tu (EF-Tu), was cloned into a ColE1-derived plasmid downstream of the lac promoter-operator.
(20) A deletion mutant of a plasmid born Escherichia coli tufA gene, which codes for a truncated elongation factor Tu comprising domains 2 and 3, has been constructed by genetic engineering.
Volcanic
Definition:
(a.) Of or pertaining to a volcano or volcanoes; as, volcanic heat.
(a.) Produced by a volcano, or, more generally, by igneous agencies; as, volcanic tufa.
(a.) Changed or affected by the heat of a volcano.
Example Sentences:
(1) But volcanic liberation has never really been his bag.
(2) Future ice loss and bending of the crust due to rising sea levels have the potential ultimately to raise levels of both earthquake and volcanic activity.
(3) He was a prowling, volcanic presence on the touchline.
(4) The Texas senator Ted Cruz says the rise of Donald Trump makes him “very optimistic” the next occupant of the White House will be a conservative – perhaps himself – propelled there by the “volcanic rage” of voters.
(5) In summary, volcanic ash alone or in combination with SO2 had only minimal effects on certain host defense mechanisms.
(6) Facebook Twitter Pinterest The landscape near San José I had started with a night in Rodalquilar, a white-washed village inside a large volcanic crater.
(7) If you only have an 20cm tin you can use that instead, but don't use all the batter – about 80% will suffice – otherwise you'll end up with a volcanic overspill, cake soldered to the floor of the oven and a frayed temper.
(8) Even by Congolese standards, Goma has endured much in its history , from mass looting by the army to the arrival of a million Rwandan Hutu refugees, years of cross-border wars and, in 2002, a volcanic eruption that poured a tide of lava through its heart.
(9) She writes about the nightmarish scenarios surrounding geoengineering, or hacking the planet, by spraying seawater into the sky to create cloud cover, or simulating a volcanic eruption to fill the lower atmosphere with ash.
(10) The telescope, which is perched on the summit of Mauna Kea, a volcanic island in Hawaii, picked up signs of methane in the planet's atmosphere that could not be seen by either Hubble or Spitzer .
(11) A thermoacidophilic micro-organism, isolated from volcanic hot springs near Naples, was cultivated in vitro, and examined by electron microscopy in sections and after negative staining.
(12) Festivalgoers in Edinburgh will witness the city’s birth from volcanic eruptions and the crushing force ice in a late-night spectacular that will open this year’s events.
(13) Triassic-Jurassic, c 200 million years ago Three-quarters of species were lost, again most likely due to another huge outburst of volcanism.
(14) But to do Hakone justice, find a reasonably priced ryokan and take a couple of days to explore the volcanic geysers of Owakudani, the botanical gardens, the cherry blossom in spring and Hakone shrine on the shore of the lake.
(15) Following the 1980 Mount St. Helens volcanic eruption, psychiatric reactions were studied in the disaster area and in a control community.
(16) A thousand years ago, it was responsible for one of the largest volcanic eruptions in human history.
(17) Edinburgh’s skyline is dominated by Castle Rock, Calton Hill nearby, the dramatic volcanic remnants of Arthur’s Seat and the cliffs of Salisbury Crags , but festival events rarely focus on the city’s geological history.
(18) Lake Nyos sits in a crater on the edge of an inactive volcano in the Oku volcanic field.
(19) Costs of the disruption to the global airline industry caused by the volcanic ash cloud have spiralled to $1.7bn (£1.1bn), according to new estimates today from the International Air Transport Association (Iata).
(20) On her newest album Haze recalls discovering rap as an outlet: " I was nothing Then all of a sudden I'm a volcanic eruption. "