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Torsional angles are dihedral angles which is an angle between two intersecting planes on a third plane perpendicular to the line of intersection, it is defined by 4 points in space. It can vary +/- 180o from the co-planer
Torsional angles are one of the important parameters of the protein folding. In a protein chain there are three torsional angles : φ (phi), ψ (psi) and ω (omega). The side chain torsional angle are near 180°(trans), 60°(gauche+), and -60° (gauche-). Sometimes the stability of side-chain dihedral angles is affected by the values φ and ψ. The torsion angles φ (phi) and ψ (psi) maintains the flexibility of the polypeptide backbone to adopt a certain fold. Thus torsional angles play an important role in controlling the geometry of the protein structures on which the specific functions of proteins and biological activity depends. When a protein is denatured, secondary and tertiary structure is altered and it can no longer perform its function. So torsional angles have a great role in biological activities.
Suppose you live in an alternate universe where a different set of quantum numbers is required to describe the atoms in that universe. The quantum number rules in the alternative universe are
The isomerization of cyclopropane follows first order kinetics. The rate constant at 700 K is 6.20*10^-4 min-1, and the half life at 760 K is 29 min. Calculate the activation energy for this reaction.
What is the total linear interaction coefficient (macroscopic cross section) for a thermal neutron in the natural uranium? What is the total macroscopic fission cross section for thermal neutrons
Most electrical energy in the United States is generated in large-scale power cycles through conversion of thermal energy to mechanical energy, which is then converted to electrical energy
the combustion of butane produces heat according to the equation 2c4h10g 13o2g 8co2g 10h2ol hdegrxn -5314 kjmol.
The ice was poured out into another container leaving a wet, empty beaker that weighed 46.146g. How much ice was poured into the other container?
the reaction of potassium in water is extremely exothermic, what would be the problem with adding a large piece of potassium to a small amount of water?
What is the difference between selectivity and sensitivity as these words pertain to sensors? Why or why not would you want a very sensitive sensor?
What was the purpose of using aq. NaOH in aldol condensation lab? A. It acts as an electrophile on which an enolate ion can attack B. It acts as a nucleophile which can attack an electrophilic carbonyl carbon.
If the speed limit is 75 mph, could the driver of the car reasonably evade a speeding ticket by invoking the Heisenberg uncertainty principle?
to test the effectiveness of a gunpowder mixture 1 gram was exploded under controlled stp conditions and the reaction
Question- What will be the change in enthalpy when 100.0 g of butane, C4H10, is burned in oxygen as shown in the thermochemical equation below. 2 C4H10(l) + 13 O2(g) ---> 8 CO2(g) + 10 H2O(g) DeltaH = -5271 kJ
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