Molecular biology

Molecular biology

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Molecular biology

Anaplerotic pathway

Biology; Biochemistry

Metabolic reactions that replenish the pools of intermediates of the tricarboxylic acid cycle. These pools may become depleted, as they also serve as precursors for amino acid synthesis, ...

Ascus

Biology; Biochemistry

A spore-like form through which yeast cells pass during their life cycle; an outer wall surrounds a diploid cell that undergoes meiosis to form four haploid cells (ascospores) which eventually ...

The movement of chloride ions into erythrocytes as bicarbonate exits, due to the generation by carbonic anhydrase of bicarbonate from carbonic acid inside the cells as they pass through peripheral ...

Antigen presentation

Biology; Biochemistry

The appearance on the surface of a cell of a foreign protein, e.g. one that arises from viral infection, in a complex with a class I major histocompatibility complex protein. It is this complex that ...

Ion-exchange chromatography

Biology; Biochemistry

A technique for separation of charged compounds or macromolecules in solution according to their affinities for a positively charged stationary phase (an anion exchanger) or a negatively charged ...

Salvage pathway

Biology; Biochemistry

A metabolic reaction that recovers some of a partially degraded compound for resynthesis, e.g. resynthesis of GTP from guanine recovered from degradation of nucleotides via the hypoxanthine-guanine ...

Wobble

Biology; Biochemistry

The presumed slackness of structural requirements for complementarily in fitting codon to anticodon that permits several bases in the third position of the codon to pair with a particular base in the ...