The zinc atom is simultaneously bound by the 2 cysteine and the 2 histidine side chains. DNA has a negatively-charged phosphate backbone. Therefore, the positively- charged arginine of the zinc finger can bind to DNA via an electrostatic interaction. How does TALENs work? TALENs are artificial restriction enzymes and canRead More →
Zinc finger nucleases (ZFNs) are engineered restriction enzymes designed to target specific DNA sequences within the genome. Assembly of zinc finger DNA-binding domain to a DNA-cleavage domain enables the enzyme machinery to target unique locus in the genome and invoke endogenous DNA repair mechanisms. Who discovered ZFNs? In 2003, MathewRead More →
As a result of reaction between metal and non-metal, they are bonded with electrostatic force of attraction with each other; such bonds are called chemical bonds. Sodium is a metal whereas chlorine is a non-metal. Sodium metal reacts with chlorine to form an ionic compound, sodium chloride. What compound doesRead More →
Both of these rust-resistant screws are rated to withstand a wet environment (in a moisture chamber with a 5% salt spray solution) for at least 500 hours. By comparison, ordinary zinc-plated screws are rated to last about 100 hours before the first red rust appears. Are zinc plated screws OKRead More →
ZnS (zinc sulfide) is an ionic compound. This is because ionic compounds are made of metals and nonmetals. Zinc (Zn) is a metal because it is found in the metals section on the left hand side of the periodic table in group 12. What is the sulphide ore of zinc?Read More →
Zinc (Zn), chemical element, a low-melting metal of Group 12 (IIb, or zinc group) of the periodic table, that is essential to life and is one of the most widely used metals. What kind of mineral is zinc? Zinc is recovered from a number of different zinc minerals. The mostRead More →
Zinc cyanide is used for electroplating of zinc. In Gatterman reaction , it is used for the introduction of formyl group in to aromatic compounds as well as to prepare 2-hydroxy-1-nafthaldehyde and mesitaldehyde. It is also used in chemical analysis in analytical chemistry. Is zinc cyanide toxic? * Breathing ZincRead More →
Polycarboxylate cement is one of the few dental materials that demonstrate true adhesion to tooth structure. The powder is primarily zinc oxide, and the liquid is polyacrylic acid or a copolymer of that acid. … As with all types of cement, the liquid should not be dispensed until just beforeRead More →
Desensitizing medications are used to seal the microscopic pores of unprotected root surfaces if a patient is experiencing more than a mild sensitivity to temperature extremes or sweets. Teeth whitening can also leave patients with sensitivity. Which of the following is most effective de Sensitising agent? Sodium fluoride was recommendedRead More →
“Chelated” minerals are among the mineral supplements touted for their improved absorption. The word, chelate (pronounced: key late) means to create a ring-like complex, or in loose terms ‘to grab and bond to’. Most clelated formulas use protein molecules, i.e. chains of amino acids. What is the difference between chelatedRead More →