Molecular biology

Molecular biology

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Molecular biology

magic spot nucleotides

Biology; Biochemistry

Guanine nucleotide derivatives (ppGpp and pppGpp) that mediate the cessation of production of rRNA in the absence of an essential amino acid, a phenomenon present in stringent bacteria but absent ...

Archaic nomenclature for a protein that is sparingly soluble in water, but is soluble in dilute salt solutions. Euglobulins do not dissolve in salt-free water, whereas pseudoglobulins are soluble in ...

polarization

Biology; Biochemistry

A measure of the mobility of a fluorophore: P=(I

code blocker (antisense drug)

Biology; Biochemistry

In an attempt to develop specific therapies, free of side-effects, an antisense oligonucleotide or analogue that is designed to form a double-stranded complex with an mRNA produced by a virus or ...

Michaelis constant (Km)

Biology; Biochemistry

Given by (k -1 +k 2 )/k 1 ; the sum of the first-order rate constants for the productive and non-productive breakdown of the Michaelis complex divided by the second-order rate constant for its ...

flame photometry

Biology; Biochemistry

An analytical technique to quantify small amounts of some elements, especially alkali metals, in solution; the solution is vapourized in a flame and the intensity of the characteristic spectral line ...

Beer's law

Biology; Biochemistry

A quantitative treatment of the absorption of monochromatic light by a solution. The equation A=log(I 0 /I) defines A (the absorbance, which is proportional to the concentration of the ...