Molecular biology

Molecular biology

Contributors in Molecular biology

Molecular biology

A quantitative measure of the concentration of a stable isotope, analogous to the specific radioactivity of a radioisotope; the enrichment of that isotope, as a percentage of all isotopes, over and ...

Chemiluminescence

Biology; Biochemistry

The light emitted by an exergonic chemical reaction; contrasted with photoluminescence (fluorescence or phosphorescence), which is the light emitted as a fluorophore falls to a lower energy state ...

Di-

Biology; Biochemistry

A prefix derived from the Greek for two; also the form of the prefix dia- used before a vowel. In organic chemistry, used to denote twice the usual proportion of an element or other component; bi- ...

Alpha (α)-helix

Biology; Biochemistry

A secondary structure in proteins; the right-handed helical folding of a polypeptide such that amide nitrogens share their hydrogen atoms with the carbonyl oxygens of the fourth amide bonds towards ...

Root effect

Biology; Biochemistry

A phenomenon in some teleost fish that allows them to generate O 2 gas in their swim bladders in the face of considerable hydrostatic pressure. The haemoglobin structure and the local secretion of ...

Kringle

Biology; Biochemistry

A protein folding motif, as visualised in two dimensions, of loops formed by multiply disulphide-bridged sequences of several circulating proteins, e.g. α 2 -macroglobulin, complement component C3, ...

Spacer arm

Biology; Biochemistry

In affinity chromatography, the chain of carbon and/or other atoms that positions a functional group away from the solid matrix to which it is covalently bound and makes it more available to a ligand ...