Recent questions tagged aminoacids

​​​​​Which of the following amino acids contain(s) two chiral carbons?L-LeucineL-ThreonineL-IsoleucineL-Asparagine

Which one of the following amino acid residues will destabilize an $\alpha$-helix when inserted in the middle of the helix?ProVallIeLeu

Natural proteins are composed primarily of $20$ $\alpha$-amino acids. Which one of the following statements is true for any of these amino acids in a solution of pH $1.5$...

Which one of the following amino acids has three ionizable groups?GlycineLeucineValineLysine

Which one of the following amino acids has the highest probability to be found on the surface of a typical globular protein in aqueous environment?AlaValArgIle

How many different protein sequences of $100$ residues can be generated using $20$ standard amino acids?$100^{20}$$100 \times 20$$20^{100}$$100! \times 20!$

Amino acid residue which is most likely to be found in the interior of water-soluble globular proteins isThreonineAspartic acidValineHistidine

The reactions leading to the formation of amino acids from the TCA cycle intermediates arecarboxylationisomerizationtransaminationdecarboxylation

The total number of fragments generated by the complete and sequential cleavage of the polypeptide given below by Trypsin followed by $CNBr$ is __________.$Phe-Trp-Met-Gl...

Which one of the following aminoacids in proteins does $NOT$ undergo phosphorylation?SerThrProTyr

Which one of the following amino acids is catalyzed by activated macrophages to produce reactive nitrogen species?ArginineAsparagineCysteineHistidine