Molecular biology

Molecular biology

Contributors in Molecular biology

Molecular biology

A feature of an X-ray diffraction pattern of a fibre. For fibres that contain aligned helices, the reflections appear as a pattern of spots arrayed in lines perpendicular to the fibre axis and the ...

imposter

Biology; Biochemistry

A gene product that can replace a missing homologous protein. Knockout experiments are sometimes misleading because a physiological function is preserved by an imposter; in such cases, a lethal ...

high efficiency particulate air filter (HEPA filter)

Biology; Biochemistry

A mat of fibres, e.g. fibreglass, that is designed to block airborne particles of 0.3 Âµm or greater with an efficiency of at least 99.97%. Among their applications is the prevention of contamination ...

cryptic

Biology; Biochemistry

Descriptive of a function that is not usually, or not always available or expressed; e.g. an enzyme that is separated from poteintial substrates by being located in a lysosome, a splice site in a ...

reaction center

Biology; Biochemistry

In photosynthesis, the energy-transducing unit. By absorption of light it excites a chlorophyll dimer, which can then transfer a pair of electrons across a membrane to a quinone, which will accept ...

site-directed mutagenesis

Biology; Biochemistry

A technique to alter deliberately a structural gene to insert a desired point mutation. A synthetic polynucleotide that contains the genetic alteration is used as an imperfectly fitting primer in ...

hot start PCR

Biology; Biochemistry

A variation of the basic PCR procedure that prevents copying of non-specific primer-template complexes, which may be stable at moderate temperatures, by addition of an essential reaction component ...