Question

which part of an amino acid determines its characteristic and, therefore, the folding of the protein? sulfhydryl functional groups can interact together to form disulfide bridges to stabilize a proteins shape. an increase in which amino acid, shown in the table above, would result in a more stable protein?
cysteine
histidine
threonine
methionine

Explanation:

Sulfhydryl groups (-SH) are present in cysteine. Disulfide bridges are formed between sulfhydryl groups of cysteine residues, which stabilize protein structure. Other amino - acids listed do not have sulfhydryl groups that can form disulfide bridges.

Answer:

A. Cysteine