Molecular biology

Molecular biology

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Molecular biology

iontophoresis

Biology; Biochemistry

The transport of ions across a semi-permeable membrane under the influence of an electric charge. As ions are driven across the membrane by the electric field, there is also the accompanying ...

methionine bristles

Biology; Biochemistry

The cluster of methionine side chains that are proposed to protrude from the surface of a signal recognition particle and provide a plastic hydrophobic environment that can interact with the ...

restriction fragment length polymorphism (RFLP)

Biology; Biochemistry

The variation of size of polynulceotides which are generated by restriction endonucleases and visualized by electrophoresis and Southern blotting. Changes in the normal pattern are indicative of ...

teichoic acid

Biology; Biochemistry

A linear polymer present in Gram-positive bacterial capsules, cell walls and membranes, characterized by polyols (glycerol, ribitol, sugars), sometimes derivatized as D-alanine esters, and linked ...

partition chromatography

Biology; Biochemistry

A technique for separation of molecules based on their differing ratios of solubility in two immiscible solvent phases. A stationary phase is coated or impregnated with one solvent phase and the ...

catecholamine

Biology; Biochemistry

One of a family of phenolic compounds chemically related to catechol (1,2-dihydroxybenzene), which is derived metabolically from tyrosine; the family comprises hormones and neurotransmitters, ...

interspersed repetitive sequence-PCR (IRS-PCR)

A method for amplification of human DNA sequences in hybrid somatic cells, using primers directed at species-specific repetitive sequences: a short interspersed repeat element (e.g. Alu) sequence, a ...