pKa


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pKa

The negative decadic logarithm of the ionization constant (Ka) of an acid; equal to the pH value at which equal concentrations of the acid and conjugate base forms of a substance (often a buffer) are present.

pK a

/pK a/ the negative logarithm of the ionization constant (K) of an acid, the pH of a solution in which half of the acid molecules are ionized.

pKa

the negative logarithm of the ionization constant of an acid, a measure of the strength of an acid. The lower the pKa, the stronger the acid.

PKA

abbreviation for protein kinase.

pKa

The negative decadic logarithm of the ionization constant (Ka) of an acid; equal to the pH value at which equal concentrations of the acid and conjugate base forms of a substance (often a buffer) are present.

p,

n a mathematical function analogous to the calculation of pH. It is the negative log (p) of the constant of acid dissociation (
Ka). When the p
Ka of a buffering agent equals the pH of the solution to be buffered, the buffering system is most effective. According to the Henderson Hasselbach equation, p
Ka = pH + log ([HOAc]/[OAc-]).
References in periodicals archive ?
Additionally antibodies against the phosphorylation sites Ser 345/346 for PKA (Santa Cruz Biotechnology Inc.
Caption: Figure 4: Effects of Didang Decoction on the expression of mRNA gene transcription level on cAMP-1, PKA, and PKC (mean [+ or -] SD).
In the case where PKA took effect independently, EADs occurred with shorter cycle length (2000 ms versus 4000 ms), indicating that the precondition of EADs is relaxed.
Reaction mixture containing 5 [micro]l PKA reaction 5X Buffer, 5 [micro]l A1 Peptide (Pep-tag), 5 [micro]l PKA activator 5X solution and 1 [micro]l peptide protection solution was prepared in a 0.
What they found was MAPK and PKA coordinate their activity both spatially and temporally in the formation of memories.
Researchers using uterine muscle samples from patients at Newcastle's Royal Victoria Infirmary showed that the drug Trichostatin A increased the levels of PKA and also inhibited smooth muscle contractions in these tissues.
Teamcrazy, who train in Kings Norton and Shirley, took part in the PKA National Championships in Burton on Trent.
Pierce worked for Mr Armstrong's pipeline supply firm PKA, named from his initials.
These are not frat houses, technically -- PKA and ZBT letters do not hang from the homes.
With the crab model, we obtained the first data showing that the manipulation of PKA activity by means of cAMP analogs affects memory formation.