Two-step mechanism for the production of charged ... the formation of an enzyme-bound aminoacyl-adenylate complex. Nucleophilic attack of the 2' or 3'-hydroxyl of the terminal ribose of the ...

2 For instance, at lower pH values, protonation of alkoxide groups reduces the rate of nucleophilic attack by water, resulting in a slower, more controlled reaction. Temperature and solvent polarity ...

One person was killed and five others wounded in stabbings in the center of the town of Villach. A man from Syria was arrested at the scene. By Jin Yu Young and Christopher F. Schuetze Christopher ...

Bavarian governor Markus Söder shared in a news conference that the incident was being treated as a possible attack Kimberlee Speakman is a digital writer at PEOPLE. She has been working at ...

The immune system plays a key role in detecting and destroying cancer cells. Cancer immunotherapy works by programming immune cells to recognize and eliminate cancer cells.

She has been working in journalism for seven years. Charlize Zmuda/Instagram The family of a teenage girl who was killed in a shark attack off of a popular Australian beach is speaking out.

Police in Germany have said the suspect in a car ramming attack in Munich appears to have had a "religious motivation". At least 36 people were hurt on Thursday when a car drove into a crowd of ...

A man accused of killing a 14-year-old boy and injuring five other people in a stabbing attack in Austria was motivated by "Islamic terrorism", say authorities. The victims included two 15-year ...

No matter how impenetrable your cybersecurity is, an attack on a third-party can leave you exposed, illustrated by the US Treasury’s ‘major incident’, a cyberattack originating from a ...

DeepSeek, the Chinese artificial intelligence company whose technology has rattled both Silicon Valley and Wall Street, said Monday it would temporarily limit new user registrations due to ...

Let’s take a look at some of the top emerging attack tactics that organizations ... Cryptocurrency mechanisms are complex, and attackers are learning that they can exploit its unfamiliarity ...