-OH  Name of Functional group: This is a hydroxyl  Function of the group: Draws electrons  Attracts water, Dissolves organic materials such as sugar  Polar or non-polar: Polar  Hydrophobic or hydrophilic: Hydrophilic  Found in All Proteins: No  Found in Many Proteins: Yes  Found in Lipids: No

-CO 2  Name of Functional Group: This is Carbonyl  Function of the group: structural isomers in a carbon skeleton  Polar or non-polar: non-polar  Hydrophobic or Hydrophilic: hydrophilic  Found in all Proteins: Yes  Found in many Proteins: No  Found in Lipids: Yes

-COOH  Name of Functional Group: This is carboxyl  Function of the group: Has acidic properties because it is a source of hydrogen ions  Polar or non-polar: The covalent bond between oxygen and hydrogen is so polar that hydrogen ion tend to dissociate reversible  Hydrophobic or Hydrophilic: Hydrophilic  Found in all Proteins: Yes  Found in many Proteins: No  Found in Lipids: No 

-NH 2  Name of functional group: This is an Amino group  Function of the group: Acts as a base; can pick up a proton from another solution. Ionized, with a charge of 1+.  Polar or nonpolar: Polar  Hydrophobic or Hydrophilic: hydrophilic  Found in all Proteins: Yes  Found in many Proteins: No  Found in Lipids: No

-SH  Name of the Functional Group: This is the Sulfhydryl group  Function of the group: two of these can interact to help stabilize protein structure.  Polar or nonpolar: since the electronegativity difference is so small, it is nonpolar  Hydrophobic or hydrophilic: hydrophilic  Found in all Proteins: No  Found in many Proteins: Yes  Found in Lipids: No

-PO 4  Name of Functional group: This is Phosphate  Function of the group: Transfers energy between organic molecules  Polar or non-polar: non polar  Hydrophobic or Hydrophilic: hydrophilic  Found in all Proteins: No  Found in many Proteins: No  Found in Lipids: Yes

Suhani Patel Alisa Haitsch Andrew Mazari Brian Hoyer