Molecular biology

Molecular biology

Contributors in Molecular biology

Molecular biology

A quantitative measure of the concentration of a stable isotope, analogous to the specific radioactivity of a radioisotope; the enrichment of that isotope, as a percentage of all isotopes, over and ...

arginine fork

Biology; Biochemistry

A specific kind of interaction between an RNA and an RNA-binding protein in which the two equivalent guanidinium nitrogens of an arginine residue interact with adjacent phosphates of a ...

beta (β)-oxidation

Biology; Biochemistry

The series of enzymic reactions that oxidizes fatty acyl-CoA esters and shortens them by removal of the C-terminal two carbon atoms as acetyl-CoA. More narrowly, it is the oxidation of a compound, ...

SOS repair

Biology; Biochemistry

An error-prone DNA repair process induced in response to ultraviolet-light-induced mutagenesis. In the face of pyrimidine dimerization, it allows for continued DNA resynthesis with relaxation of the ...

signature sequence

Biology; Biochemistry

An insertion or deletion in the coding sequence of a gene which, because it is shared by phylogenetically distant species, is thought to be evolutionarily conserved and therefore can serve to trace ...

peptide Velcro

Biology; Biochemistry

A description of helix-helix interactions in which side chains of two parallel, adjacent helices closely interact due to complementary shapes and electrostatic interactions, e.g. the leucine zipper ...

picket fence porphyrin compound

Biology; Biochemistry

A model oxygen-binding porphyrin in which bulky side chains on one face of the ring permit binding of molecular oxygen while preventing oxidation of Fe 2+ , which is co-ordinated on the other face of ...