The Structural Formulas for the 20 Naturally Occurring Amino Acid

question 41

Short Answer

The structural formulas for the 20 naturally occurring amino acid residues are shown in the panel below. Answer the following question(s) with the help of this panel.

-Which of the amino acids shown above has the most limited combinations of phi (?) and psi (?) angles in its Ramachandran plot? Write down the one-letter abbreviation for it, e.g. A.

---

Definitions:

Sclerenchyma Cells

Thick-walled, lignified plant cells that provide structural support and are found in regions of secondary growth.

Sensors

Devices or instruments that detect and respond to some type of input from the physical environment, such as light, heat, motion, moisture, pressure, or any one of a great number of other environmental phenomena.

Sympathetic Nervous System

Part of the autonomic nervous system that prepares the body for physical activity and is often referred to as the "fight or flight" system.

Central

Central refers to something that is of primary importance or located at the middle or core of something.