At acidic pH, others promote activation. Key residues like Glu112, His193, and His208 suppress the enzyme when deprotonated. But under acidic conditions, Glu255 and His307 help it switch on.

Watch: Andre Callus vs Joseph Portelli Portelli and Callus met for the first time in their lives in this Times Talk debate ...

Deciding between an Agile and Waterfall methodology for project management? This guide compares the two approaches to help you choose.

Learn which antivirus and online protection suite is right for you in this Microsoft Defender vs. McAfee comparison. We discuss features, pricing and more.

CT and MRI scans produce detailed images of the body. Learn the details and differences between CT scans and MRIs, and benefits and risks of each.

There's no easy answer to the cannabis versus alcohol debate. Cannabis appears to be safer, but there's simply not enough evidence to declare a winner.

The pH-dependent equilibrium between the visible (protonated Schiff base) and UV (deprotonated Schiff base) forms revealed that their ratio changes with Cl − concentration (Fig. S6A–E).

The roles of hydrogen bonding, electrostatic interactions, sequence, gas-phase basicity, and molecular geometry in determining the structures of protonated and alkali metal-cationized ...

UFC 317 - Topuria vs. Oliveira pits Undefeated Ilia El Matador Topuria vs Charles do Bronxs Oliveira fight in T-Mobile Arena, Las Vegas, Nevada, United States on Jun 28, 2025.

The oligomeric state of the storage form of human insulin in the pancreas, which may be affected by several endogenous components of β-cell storage granules such as arginine, is not known. Here, the ...