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protein

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accelase

Overview page. Subjects: Medicine and Health.

A mixture of enzymes that hydrolyse proteins, used to shorten the maturation time of cheeses and intensify the flavour of processed cheese.

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active transport

Overview page. Subjects: Medicine and Health — Biological Sciences.

The movement of an ion or molecule across a cell membrane against a concentration or electrochemical gradient. The process requires specific enzymes and energy supplied by ATP.

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albumin

Overview page. Subjects: Science and Mathematics — Medicine and Health.

(al-bew-min)

a protein that is soluble in water and coagulated by heat. serum a. a protein found in blood plasma that is important for the maintenance of plasma volume.

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allosteric

Overview page. Subjects: Chemistry.

Applied to a protein molecule that has two or more sites at which it can bind (combine) with other molecules, such that binding with one influences its binding with another. Some...

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allosteric enzyme

Overview page. Subjects: Chemistry — Biological Sciences.

A regulatory enzyme whose catalytic activity is modified by the noncovalent attachment of a specific metabolite to a site on the enzyme other than the catalytic site.

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allozyme

Overview page. Subjects: Biological Sciences.

Any one of a number of different forms of the same enzyme that are coded by different alleles at the same locus.

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alpha amino acid

Overview page. Subjects: Plant Sciences and Forestry — Zoology and Animal Sciences.

An amino acid in which the amino group is attached to the number two, or ‘alpha’ carbon, adjacent to the carboxyl group. Compounds of this type represent the basic building blocks of...

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alpha helix

Overview page. Subjects: Biological Sciences — Chemistry.

The most common form of secondary structure in proteins, in which the polypeptide chain is coiled into a helix. The helical structure is held in place by weak hydrogen bonds between the N-H...

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amino acid

Overview page. Subjects: Medicine and Health — Biological Sciences.

An organic acid carrying an amino group. Proteins are linear polymers of the l-forms of ~20 common amino acids linked by peptide bonds.

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amino acid profile

Overview page. Subjects: Medicine and Health.

The amino acid composition of a protein.

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