Molecular biology

Molecular biology

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Molecular biology

Beer-Lambert equation

Biology; Biochemistry

A=ε c ·l; a quantitative definition of the dependence of the absorbance of monochromatic light, A, on the molar absorption coefficient, ε, the concentration of the chromophore, c, and the length ...

A value for the molecular mass of a macromolecule calculated from its content of a metal ion, end group or other feature present in an unknown stoichiometric ratio, e.g. the minimal molecular mass of ...

Bile acid

Biology; Biochemistry

One of the products of cholesterol hydroxylation and side-chain oxidation to the level of a carboxylic acid. The carboxylate is often conjugated through an amide bond to a glycine or a cysteic acid. ...

Hydrazinolysis

Biology; Biochemistry

In determination of the C-terminal amino acid of a protein, cleavage of a peptide bond by insertion across it of the elements of hydrazine; in the Maxam-Gilbert method for sequencing polynucleotides, ...

Schiff base

Biology; Biochemistry

The product formed by the reversible condensation of an aldehyde with an amino group in which the elements of water have been eliminated. It is featured in structures of biochemical interest, notably ...

Embryo

Biology; Biochemistry

The early developmental stages of animals and plants, from the first cell division until germination (plants), hatching (non-mammalian animals) or live birth (mammals). In humans, the term is usually ...

Palindrome

Biology; Biochemistry

A concept borrowed from linguistics; a segment of a double-stranded polynucleotide such that the order of bases, read 5'-to-3' in one strand, is the same as that in the complementary antiparallel ...