Topic06 Lipids & Proteins(1)

7/29/2019 Topic06 Lipids & Proteins(1)

1/105

Lipids and

Proteins

Copyright 2010, Sue Bard, Mary Alice Jost and Howard Community College

General Properties of Lipids


2/105

Lipids vary in structureand functionSo what do all lipids haveIn common????Lets look at a fewDifferent lipids.

WAX PHOSPHOLIPID FAT

WAXPHOSPHOLIPIDFAT


3/105

Based on the structures of 3 different

lipids a wax, a phospholipid, and a fatdo you think lipids are:

Hydrophilic ? Hydrophobic ?

Yes, due to the large percentage of

C and H with very little O or Nlipids are non-polar (hydrophobic)

and therefore

do not attract water molecules.

or


4/105

Lipids and

Proteins


Fats and Oils


5/105

Major Functions of Fats and Oils:Compact Energy Storage1 gram fat or oil = 9 calories

1 gram carbohydrate of protein = 4 calories

Aid in absorption and storage of fat solubleVitamins (A,D,E and K)

Fats provide heat and insulation for body

Fats protect and cushion organs (kidneys,eyes)


6/105

Structure?

Fats and oils are composed of two types of

molecules glycerol and fatty acids. Most are

composed of glycerol bonded to THREE fatty acids.

These fats and oils are called triglycerides.

Lets See

FATTY ACID

FATTY ACID

FATTY ACID

LORECYLG


7/105

But what is glycerol? And what are

Fatty acids?... Lets see!

Glycerol is a 3-carbon molecule which

contains 3 hydroxyl groups.

Which molecule below is glycerol?

b. Is the glycerol molecule. It is a 3-carbon

molecule with 3 hydroxyl groups.


8/105


9/105

The carboxyl

group makesthe molecule

acidic.

The Carbon/Hydrogen

chain makes the

molecule primarily non-

polar and therefore

hydrophobic.

Why is it hydrophobic? Acidic?

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

C

O

O HH

H

C

H

H

C

H

H

C

H

H

C

H


10/105

The carboxyl

group makesthe molecule

acidic.

The Carbon/Hydrogen

chain makes the

molecule primarily non-

polar and therefore

hydrophobic.

Why is it hydrophobic? Acidic?

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

H

C

H

C

O

O HH

H

C

H

H

C

H

H

C

H

H

C

H


11/105

Lipids and

Proteins


Triglycerides (fat and oil) Synthesis


12/105

GLYCEROL +

3 FATTY ACIDS

DEHYDRATION SYNTHESIS TRIGLYCERIDE

+ 3 H2O


13/105

GLYCEROL +

3 FATTY ACIDS


+ 3 H2O


14/105

GLYCEROL +

3 FATTY ACIDS


+ 3 H2O


15/105

GLYCEROL +

3 FATTY ACIDS


+ 3 H2O


16/105

GLYCEROL +

3 FATTY ACIDS


+ 3 H2O


17/105

GLYCEROL +

3 FATTY ACIDS


+ 3 H2O


18/105

GLYCEROL +

3 FATTY ACIDS

HYDROLYSIS TRIGLYCERIDE

+ 3 H2O


19/105

GLYCEROL +

3 FATTY ACIDS


+ 3 H2O


20/105


21/105


22/105

GLYCEROL +

3 FATTY ACIDS


+ 3 H2O


23/105

GLYCEROL +

3 FATTY ACIDS


+ 3 H2O


24/105

GLYCEROL +

3 FATTY ACIDS


+ 3 H2O


25/105


26/105


27/105


28/105


29/105


30/105

SATURATED UNSATURATED

SOLID LIQUID

ANIMAL PLANT


31/105


32/105


33/105


34/105


35/105


36/105


37/105

Trans Fatty Acids


38/105


39/105


40/105

Lipids and

Proteins


Other Lipids


41/105


42/105


43/105


44/105


45/105


46/105


47/105


48/105

Lipids and

Proteins


Amino Acids


49/105


50/105


51/105


52/105


53/105


54/105


55/105


56/105


57/105


58/105


59/105


60/105


61/105


62/105


63/105


64/105


65/105


66/105


67/105


68/105


69/105


70/105


71/105


72/105


73/105

THE DNA MOLECULE is the BLUEPRINT!


74/105

THE DNA MOLECULE is the BLUEPRINT!


75/105


76/105


77/105


78/105


79/105


80/105


81/105

d d


82/105

Lipids and

Proteins


Protein Examples


83/105


84/105

L d d


85/105

Lipids and

Proteins


Antibodies


86/105


87/105


88/105


89/105


90/105

light chain light chain

heavy chain

heavy chain


91/105


92/105


93/105


94/105


95/105

Lipid d


96/105

Lipids and

Proteins


Types of Immunity


97/105


98/105

Additional Notes


99/105

Additional Notes

Figure 3 11c


100/105

Figure 3.11c

Figure 3 12


101/105

Figure 3.12


102/105

http://academic.brooklyn.cuny.edu/biology/bio4fv/page/phosphb.htm


103/105


104/105

http://www.sciencegateway.org/resources/biologytext/lm/proteins/aa/aminoacids.html

Figure 3.17


105/105

Figure 3.17

Topic06 Lipids & Proteins(1)

Documents

Transcript of Topic06 Lipids & Proteins(1)