A single enzyme that can generate all four nucleoside triphosphates, the building blocks of ribonucleic acid (RNA), has been ...

While the process of copying DNA to make new strands includes a proofreading function to ensure accuracy, the so-called reverse transcriptase enzymes that make RNA into DNA copies perform no such ...

The immune system must maintain a delicate balance to defend against harmful threats while avoiding excessive inflammation.

Gibberellic acid (GA) enhances the synthesis of α-amylase and ribonuclease in isolated aleurone layers and this process is inhibited by abscisin. Removal of gibberellic acid in mid-course of α-amylase ...

The Michaelis-Menten equation is used to describe the dynamics of an enzymatic reaction, in which an enzyme interacts with a substrate to generate some product before the enzyme is released. Cells are ...

Molecular biology has transitioned to a new era where precise genetic manipulation plays a critical role in research, medicine, and biotechnology. Among the vital tools in this field are cloning ...

By resurrecting a 3.2-billion-year-old enzyme and studying it inside living microbes, researchers at the University of ...

Malfunction of presenilin enzymes, which cleave proteins in cell membranes, can lead to Alzheimer's disease. A crystal structure of a microbial presenilin provides insights into the workings of this ...

In the early 20th century, humans discovered vitamins, and then trace elements and minerals. It was only in the mid-1980s that humans realized the importance of enzymes. Nobel Prize in Physiology and ...

Researchers devised a reversibly lockable DNA device for enclosing an enzyme and controlling its access to substrates. Turning on and off the activity of a single enzyme on demand is a much desired ...

The localization and activity of polyamine oxidase (PAO; EC 1.5.3.3), was investigated in leaves and protoplasts of oat seedlings. Activity of the enzyme is highest with spermine as substrate; ...