Molecular biology

Molecular biology

Contributors in Molecular biology

Molecular biology

Half of a gap junction. Being embedded in the membrane of each of the cells and composed of six molecules of the integral protein connexin, the hemi-channel allows communication between the cytoplasm ...

reactive oxygen species (ROS)

Biology; Biochemistry

The group of chemically highly reactive species that are related to molecular oxygen, i.e. O 2 -Â (superoxide), HO (hydroxyl radical) and H 2 O 2 (hydrogen peroxide).

cryptochrome

Biology; Biochemistry

A blue light- and ultraviolet-A-sensitive receptor protein, containing pterin and flavin prostehetic groups; found ubiquitously in plants and in mammals, and linked to the circadian response of these ...

axial ratio

Biology; Biochemistry

A measure of the asymmetry of a macromolecule, assumed to be an ellipsoid, given by the ratio of the major axis to the minor axis; it is evaluated from physical properties, e.g. hydrodynamic ...

thiolysis

Biology; Biochemistry

In β-oxidation, cleavage of the bond between the β- and γ-carbons by coenzyme A to form acetyl-coenzyme A from carbons α and β and a coenzyme A thioester from the alkyl-carbonyl moiety, i.e. carbons ...

synchronous growth

Biology; Biochemistry

The co-ordinated passage through the cell cycle of a large mass of cells; sometimes achieved by experimental starvation of the cells to bring them all to the start of S phase, then relieving the ...

chiasma

Biology; Biochemistry

The point of attachment of two chromatids during meiosis that results in crossing-over, which is the exchange of a region of one chromosome, from an end to the chiasma, with the homologous region of ...