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Complete Elimination of Endosymbiotic Algae from Paramecium
Complete Elimination of Endosymbiotic Algae from Paramecium

... single species or not. We have previously cloned endosymbiotic algae from P. bursaria and characterization of each clone was carried out (Nishihara et al. 1998). On the other hand, we have reported a new technique to produce algae-free paramecia by treating green paramecia with a herbicide, paraquat ...
biotransformation - University of California, Berkeley
biotransformation - University of California, Berkeley

... The developments of the industrial revolution stimulated a rise in many occupational diseases. Percival Pott in 1775 recognized the role of soot in scrotal cancer among chimney sweeps and the problem was solved by instructing chimney sweeps to clean themselves after work. The causative agents were p ...
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1 Protonolysis of Fe-C bonds of a Diiminopyridineiron(II) Dialkyl
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... 4.2. General procedure for the reaction of 1 with protic acids in stoichiometric ratio 1:1. A solution containing approx. 440 mg of compound 1 (0.7 mmol) in 40 ml of THF was stirred at -80 ºC, and a second solution containing exactly the equimolar amount of the corresponding acid (HY = perfluorophen ...
Chapter - I 1 1.1. Introduction to amino acids
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... 1.1.1. Overview of the physical properties of the essential amino acids Amino acids, as the building blocks of the most diverse biological compounds, have a characteristic structure. With the exception of proline, all twenty amino acids have an amino group and a carboxyl group with a functional grou ...
The Advanced Placement Examination in Chemistry Acid–Base
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... A comparison of the theories Arrhenius, Brønsted and Lewis shows a progressive generalization of the acid base concept. Outline the essential ideas in each of these theories and select three reactions, one that can be interpreted by all three theories, one that can be interpreted by two of them, and ...
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... sequences suggested that 6 OTUs were related to the metaloxidizing species of α-, β-, and γ-Proteobacteria (Fig. 1). Possibly chemolithoautotrophic, ε-Proteobacteria were reported to be the dominant species at the northern Loihi Pele’s vents (Moyer et al., 1995). The phylogenetic diversity of metal- ...
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... A centrifuge is a critical piece of equipment for the laboratory, and often a significant investment. Therefore, when the time comes to add a new centrifuge—or replace an old one—it is important to make an informed decision. There is a good chance that your needs have changed since the last time you ...
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Molecular characterization of dioxygenases from polycyclic aromatic

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... 1. write in short notes about the purification of plasmid DNA? The purification of plasmid DNA An obvious prerequisite for cloning in plasmids is the purification of the plasmid DNA. Although a wide range of plasmid DNAs are now routinely purified, the methods used are not without their problems. Un ...
biology - Kendriya Vidyalaya No.1 Kanchrapara
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... SET-II (Repeated 1-2 times) 1. What is meant by withdrawal symptoms ? 2. Give scientific name of two helminthes that are pathogene to man . 3. What is incubatiuon period ? how long it is for AIDS virus ? 4. Name and explain the two types of immune responses in humans . 5. Name the two special types ...
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Nucleic acid analogue



Nucleic acid analogues are compounds which are analogous (structurally similar) to naturally occurring RNA and DNA, used in medicine and in molecular biology research.Nucleic acids are chains of nucleotides, which are composed of three parts: a phosphate backbone, a pucker-shaped pentose sugar, either ribose or deoxyribose, and one of four nucleobases.An analogue may have any of these altered. Typically the analogue nucleobases confer, among other things, different base pairing and base stacking properties. Examples include universal bases, which can pair with all four canonical bases, and phosphate-sugar backbone analogues such as PNA, which affect the properties of the chain (PNA can even form a triple helix).Nucleic acid analogues are also called Xeno Nucleic Acid and represent one of the main pillars of xenobiology, the design of new-to-nature forms of life based on alternative biochemistries.Artificial nucleic acids include peptide nucleic acid (PNA), Morpholino and locked nucleic acid (LNA), as well as glycol nucleic acid (GNA) and threose nucleic acid (TNA). Each of these is distinguished from naturally occurring DNA or RNA by changes to the backbone of the molecule.In May 2014, researchers announced that they had successfully introduced two new artificial nucleotides into bacterial DNA, and by including individual artificial nucleotides in the culture media, were able to passage the bacteria 24 times; they did not create mRNA or proteins able to use the artificial nucleotides. The artificial nucleotides featured 2 fused aromatic rings.
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