What factors can change the pKa value of an amino acid residue, and in which direction?

2030

Why is the t-butyloxycarbonyl protecting group such a good choice for amino acid synthesis?

1638

I understand that urine can act as a reagent to break disulfide bonds? I am particularly interested in bonds between cysteines. and or any other amino acids.

1060

In sickle cell anemia, a hereditary disease, there is substitution of one amino acid by other in one of the four-polypeptide chains of hemoglobin. In this case, are all of the structural levels of the protein modified?

733

What is the difference between essential and natural amino acids?

588

Name a sulphur containing amino acid.

581

Long chains of amino acids are linked together through what type of bond?

561

What is the term for the ph at which an amino acid or protein becomes electrically neutral?

607