1.
Amino Acids and Proteins
Structures and Chemical Properties

2.
AMINO ACIDS

3.
Amino acids

4.
Monosaccharides vs. Amino acids

5.
Zwitterion form

6.
Acids and Bases
•Arrhenius definition
–e.g. HCl and NaOH
•Bronsted Definition
–e.g. CH3COOH, NH3
–Amphoteric substances

7.
Zwitterion form

8.
Amino Acids and pH
• pH – a scale which indicates the
how much H+ (or H3O+) a solution
(solvent: water) has.
• The more H+ , the more acidic,
the lower the pH.

9.
Blood pH should be between
7.35 and 7.45
• Less than 7.35 - acidosis
• Greater than 7.45 - alkalosis

10.
Proteins assist with intracellular
pH regulation (Hopkins &
Sharma, 2019)
Physiology, acid base balance. Retrieved from
https://www.ncbi.nlm.nih.gov/books/NBK507807/

11.
Disulfide

12.
Dipeptide

13.
Polypeptide structure

14.
PROTEINS

15.
Structures of Proteins
1.Primary
2.Secondary
3.Tertiary
4.Quaternary

16.
Primary Structure

17.
Secondary Structure

18.
Figure 20.13 - Stabilizing Influences
that Contribute to the Tertiary
Structure
38
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