Molecular biology

Molecular biology

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Molecular biology

Z-DNA

Biology; Biochemistry

A left-handed variant of the DNA double helix originally observed in a sequence of alternating G and C bases, but possible in sequences of alternating purine and pyrimidine bases. The purines are ...

Deoxyribonucleic acid; a macromolecule formed of repeating deoxyriboses linked by phosphodiester bonds between the 3-hydroxyl group of one and the 5-hydroxyl group of the next. A purine, adenine or ...

kininogen

Biology; Biochemistry

A protein that contains the sequence Arg-Pro-Pro-Gly-Phe-Ser-Pro-Arg which has inhibitory activity against cysteine proteinases. A kininogen is a precursor of a kinin, which is a decapeptide or ...

glycosaminoglycan

Biology; Biochemistry

A subunit of a proteoglycan; an oligosaccharide that contains repeating disaccharide residues. One half of each disaccharide is an amino-sugar residue. Glycosaminoglycans include the sulphated ...

ligand-mediated PCR (LMPCR)

Biology; Biochemistry

A method for amplification of a DNA fragment or a series of fragments with a single known primer-binding site. The fragment is denatured and hybridized with the primer. Extension of the primer with a ...

T-cell

Biology; Biochemistry

Thymus lymphocyte, which recognizes foreign proteins on the surface of other cells. The groups of T-cells include cytotoxic T-cells (CTLs; killer T-cells), which can kill the foreign cell; helper ...

oncogene

Biology; Biochemistry

A gene present in normal cells which when altered can transform the normal cell into a malignant cell. (When emphasizing this relationship, the unaltered gene is called a proto-oncogene and the ...