Attenuator

Attenuator

A nucleotide sequence in the 5´ region of a prokaryotic gene (or in its RNA) that causes premature termination of transcription, possibly by forming a secondary structure.

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Part of Speech: noun
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Industry/Domain: Biotechnology
Category: Genetic engineering
Organization: FAO
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attenuation

Energy; Nuclear energy

The process by which the number of particles or photons entering a body of matter is reduced by absorption and scattered radiation.

attenuation

Energy; Nuclear energy

The process by which the number of particles or photons entering a body of matter is reduced by absorption and scattered radiation.

attenuation

Beverages; Beer

The degree to which the sugars in the wort have been converted to alcohol and CO2.

attenuated

Biology; Immunology

Pathogens are said to be attenuated when they can grow in their host and induce immunity without producing serious clinical disease.

attenuator

Engineering; Electronic engineering

A device for reducing signal amplitude in precise, predetermined steps, or smoothly over a continuous range. A network of resistors, capacitors, or both. The simplest attenuator ...

attenuator

Electronic components; Resistors

A resistive network that produces a reduction in amplitude. Common resistor terminators include 'Pi' attenuator pads, 'L' attenuator pads, or 'T' attenuator pads.

acquired immunodeficiency syndrome (AIDS)

Biotechnology; Genetic engineering

The usually fatal human disease in which the immune system is destroyed by a retrovirus (Human Immunodeficiency Virus, HIV). The virus infects and destroys helper T-cells, which ...

polymerase chain reaction (PCR)

Biotechnology; Genetic engineering

A procedure that amplifies a particular DNA sequence. It involves multiple cycles of denaturation , annealing to oligonucleotide primers, and extension (polynucleotide ...

genotype

Biotechnology; Genetic engineering

1. The genetic constitution (gene makeup) of an organism. 2. The pair of alleles at a particular locus, e.g., Aa or aa . 3. The sum total of all pairs of alleles at all loci ...

collenchyma

Biotechnology; Genetic engineering

A tissue of living cells, the walls being unevenly thickened with cellulose and hemicellulose, but never lignified; it functions in mechanical support in young, short-lived or ...

fission

Biotechnology; Genetic engineering

Asexual reproduction involving the division of a single-celled individual into two new single-celled individuals of equal size.

xerophyte

Biotechnology; Genetic engineering

A plant very resistant to drought or that lives in very dry places.

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