Molecular biology

Molecular biology

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Molecular biology

Hemisubstrate

Biology; Biochemistry

An enzyme inhibitor that acts in the initial phases of enzyme action as a substrate, but does not complete the catalytic cycle to regenerate an active enzyme; e.g. organophosphate ester ...

Small invaginations of the plasma membrane, characterised by glypiated proteins among others, that provide binding sites and points of entry of small molecules into the cytoplasm via trancytosis or ...

Quinimine form

Biology; Biochemistry

A tautomer of the Schiff base adduct of pyridoxal phosphate with an amino acid in which the pyridine ring nitrogen is protonated but uncharged and the carbon atom of the coenzyme that attaches the ...

Major histocompatibility complex (MHC)

Biology; Biochemistry

The products of genes grouped together on a chromosome that determine whether transplanted tissues will be accepted (if from an individual with the same MHC) or rejected. In the human, they are known ...

Polyketide

Biology; Biochemistry

A compound derived from biosynthetic acetyl and/or propionyl units and other building blocks, in which carbonyl carbons condense with a-carbons analogously to the synthesis of fatty acids. They are ...

Abscisic acid

Biology; Biochemistry

Abscisic acid (ABA) is an isoprenoid plant hormone that plays an important part in plant responses to environmental stress and plant pathogens. ABA is produced in terminal buds where it contributes ...

Polymerase chain reaction (PCR)

Biology; Biochemistry

A technique to amplify a specific region of double-stranded DNA. An excess of two amplimers, oligonucleotide primers complementary to two sequences that flank the region to be amplified, are annealed ...