Which of the following amino acids will bind to anion exchange resin at pH 7.0?

Draw two different possible hydrogen-bonding interactions between two molecules of formamide (HCONH2). Clearly label the hydrogen-bond donor and acceptor atoms. Which of these two possible hydrogen-bonding interactions is more likely to occur? (Hint: Consider resonance structures for formamide.)

What is the principal form of arginine at pH 8.0? Approximately what fraction is in this form?

Which of the twenty naturally occurring amino acid side chains are charged at a pan of 1.00? pH of 7.00? pH of 12.00? Make a table.

What is Pindolol durg stability in various ph, temperature, and other condition?

Draw the condensed structural formula of a gycerophospholipid trat contains two stearic acids and a phosphate banded to ethanolumine.

Phosphate buffers are commonly used to mimic biological systems. Given that phosophoric acid is a triprotic acid with three pKas (2.12, 7.21, and 12.32), why do you think this is? What are the dominant buffering compounds present in a phosphate buffer near physiological pH?

What is the predominant ionic form of ribose-5-phosphate at physiological pH? Would ribose-5-phosphate be a good biological buffer for cells?

A tetrameric protein dissociates into dimers when the detergent sodium dodecyl sulfate (SDS) is added to a solution of the protein. But the dimers are termed SDS-resistant because they do not further dissociate into monomers in the presence of the detergent. What intermolecular forces might be acting at the dimer-dimer interface? Are the intermolecular forces acting at the monomer-monomer interface different? Explain.

What is the pH of a buffer solution that is 0.20 M proprionic acid (HC3H4O2) and 0.1 M sodium proprionate (NaC3H4O2)? The KA of proprionic acid is 1.3 x 10-5