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R is the gas constant and T is the absolute temperature. Note that pK a = −log(K a) and 2.303 ≈ ln(10). At 25 °C, ΔG ⊖ in kJ·mol −1 ≈ 5.708 pK a (1 kJ·mol −1 = 1000 joules per mole). Free energy is made up of an enthalpy term and an entropy term. [11] =
The conjugate base of glyoxylic acid is known as glyoxylate and is the form that the compound exists in solution at neutral pH. Glyoxylate is the byproduct of the amidation process in biosynthesis of several amidated peptides.
In computational biology, protein pK a calculations are used to estimate the pK a values of amino acids as they exist within proteins.These calculations complement the pK a values reported for amino acids in their free state, and are used frequently within the fields of molecular modeling, structural bioinformatics, and computational biology.
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.
Robert Runnels Williams (February 16, 1886 – October 2, 1965) was an American chemist, known for being the first to chemically fully characterize and then synthesize thiamine (vitamin B 1). He first isolated thiamine in 1933, and synthesized it in 1935, reporting this in 1936.
The two mouse ROCK isoforms, ROCK1 and ROCK2, have high homology.They have 65% amino acid sequences in common and 92% homology within their kinase domains. [1] [4]ROCKs are homologous to other metazoan kinases such as myotonic dystrophy kinase (), DMPK-related cell division control protein 42 ()-binding kinases (MRCK) and citron kinase.
Owing to the simple preparative accessibility, the uncritical behavior at temperatures below 80 °C and in particular because of the high yields and the low racemization of the peptides obtained, ethyl cyanohydroxyiminoacetate has now become widely used as an additive in peptide syntheses.
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