() 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.
Tuna
Definition:
(n.) The Opuntia Tuna. See Prickly pear, under Prickly.
(n.) The tunny.
(n.) The bonito, 2.
Example Sentences:
(1) The Liberal party received $320,000 from the Australian Southern Bluefin Tuna Industry Association.
(2) The methanol-ammonia (20:1) and chloroform-methanol-ammonia (2:2:1) systems, used with silica-gel plates, are the most promising for rapid preliminary screening of tuna fish extracts for histamine.
(3) Nutritionists recommend we consume two portions a week of fish, including one of oily fish such as mackerel, herring and tuna.
(4) Immunological properties of the tuna glucagon were analyzed by radioimmunoassay, showing a high degree of cross-reactivity with the 30K antibody.
(5) On the other hand, introduction of the mixed protein into a diet based on flour plus tuna sterilized at 115 degrees C for 90 minutes, was not capable of maintaining the optimum patterns for weight evolution.
(6) In quiescent BAECs, tuna AI (1 microM) apparently induced c-myc and platelet derived growth factor (PDGF) A-chain messenger ribonucleic acid (mRNA) expressions within 30 min, which persisted for 6 h. In contrast, captopril induced a very low expression of c-myc mRNA, and had no relation to PDGF A-chain mRNA expression.
(7) The levels were 10 times higher than those found in tuna in the same area in previous years, but still well below those that the Japanese and US governments consider a risk to health.
(8) Three foods were preferred by case patients more frequently than by control patients: tuna fish, chicken salad, and cheese.
(9) The bluefin tuna, which has been endangered for several years and has the misfortune to be prized by Japanese sushi lovers, has suffered a catastrophic decline in stocks in the Northern Pacific Ocean, of more than 96%, according to research published on Wednesday.
(10) It went into tinned soups, salad dressings, processed meats, carbohydrate-based snacks, ice cream, bread, canned tuna, chewing gum, baby food and soft drinks.
(11) The ATPase activity of tuna dorsal HMM was found to be very similar to that of rabbit skeletal HMM in many respects: KCl concentration dependence, pH dependence, effect of pCMB, kinetic parameters (Vmax and Ka) in actin activation, and Arrhenius activation energy.
(12) It is concluded that changes in pH following temperature changes can be accounted for solely by the passive, in vitro behaviour of the chemical buffer system found in the blood, so that active regulatory mechanisms of pH adjustment need not be postulated for skipjack tuna.
(13) The ion binding properties of horse, bovine, and tuna cytochrome c (both oxidized and reduced) have been measured using a combination of ultrafiltration, neutron activation, and ion chromatography.
(14) Midway through a mouthful of tuna sashimi, I confess I struggle to see her as, well… "A musical actress?"
(15) Illegal bounty from the sea Facebook Twitter Pinterest The central and western Pacific is a rich fishing ground, providing an estimated 60% of the world’s tuna catch for a $7bn annual global market.
(16) The larger width of lifetime distribution observed for TNS bound to tuna apomyoglobin was related to a more extended conformational space accessible to the fluorophore in this protein compared to sperm whale myoglobin.
(17) Both those stores, the group said, offered pole-and-line caught tinned fish and had said they were committed to improving the sustainability of their fish, but the majority of their tuna was caught using the purse seine method.
(18) A novel inhibitor of angiotensin-converting enzyme (ACE) has been discovered and isolated in a pure form from acid extract of tuna muscle by successive column chromatographies and HPLC.
(19) Shrimp, canned tuna and salmon are the top choices .
(20) The sites in oxidized cytochromes c are the COOH-terminal sides of Tyr-48, Phe-46 and Tyr-46 for horse, rabbit and tuna cytochromes c, respectively.