Phosphatidylserine is a phospholipid component, usually present on the cytosolic side of cell membranes by an enzyme called flippase. When a cell undergoes apoptosis, phosphatidylserine is no longer restricted to the cytosolic part of the membrane, but becomes exposed on the surface of the cell. …

Actinomycin D is a polypeptide antibiotic first described by Waksman. It is bacteriostatic in nature, especially towards gram negative bacteria, and also has anti-tumor activity. Actinomycin D has a wide-ranging applications ranging from a selection agent in cell culture, use in studies of…

Guanosine-5'-triphosphate, a purine nucleotide, is required as a coenzyme for protein biosynthesis in a cell-free system. Substrate for RNA polymerases Substrate for wide range of GTPases GTP functions as a carrier of phosphates and pyrophosphates involved in channeling chemical…