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Pauling's second rule is that the value of the first pK a for acids of the formula XO m (OH) n depends primarily on the number of oxo groups m, and is approximately independent of the number of hydroxy groups n, and also of the central atom X. Approximate values of pK a are 8 for m = 0, 2 for m = 1, −3 for m = 2 and < −10 for m = 3. [28]
FDPB-based methods calculate the change in the pK a value of an amino acid side chain when that side chain is moved from a hypothetical fully solvated state to its position in the protein. To perform such a calculation, one needs theoretical methods that can calculate the effect of the protein interior on a p K a value, and knowledge of the pKa ...
In chemistry and biochemistry, the Henderson–Hasselbalch equation = + ([] []) relates the pH of a chemical solution of a weak acid to the numerical value of the acid dissociation constant, K a, of acid and the ratio of the concentrations, [] [] of the acid and its conjugate base in an equilibrium.
In cell biology, protein kinase A (PKA) is a family of serine-threonine kinase [1] whose activity is dependent on cellular levels of cyclic AMP (cAMP). PKA is also known as cAMP-dependent protein kinase (EC 2.7.11.11). PKA has several functions in the cell, including regulation of glycogen, sugar, and lipid metabolism.
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solvation calculations based on the Poisson–Boltzmann equation; prediction of infrared (IR), nuclear magnetic resonance (NMR), ultraviolet (UV), and vibrational circular dichroism (VCD) spectra; pKa prediction; generation of various molecular surfaces (electrostatic potential, electron density, molecular orbitals etc.)
The people who stopped drinking had lower levels of liver fat (which can be a precursor to liver damage), improved blood sugars and lower cholesterol than they did at the beginning of the month.
(Reuters) -Four men were convicted in Spain on Sunday in connection with the homophobic murder of a 24-year-old nursing assistant that sparked protests in cities across Spain and abroad.