This preview shows pages 1–3. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: because the COOH group can dissociate a proton. 3 the amino group (-NH 2 ) Organic compounds with amino groups are amines . The amino group acts as a base because ammonia can pick up a hydrogen ion (H + ) from the solution. Amino acids, the building blocks of proteins, have both amino and carboxyl groups. the sulfhydryl group (-SH) consists of a sulfur atom bonded to a hydrogen atom. This group resembles a hydroxyl group in shape and chemical properties. Sulfhydryl groups are also called thiols . Sulfhydryl groups help stabilize the structure of proteins. the phosphate group (-OPO 3 2-) A phosphate group connects to the carbon backbone via one (or more) of its oxygen atoms. Phosphate groups are negatively charged, since protons usually dissociate from the oxygen atoms. One function (of many) of phosphate groups is to transfer energy between organic molecules. And on to chapter 5....
View Full Document