logo.gif (3296 bytes)Introduction to Protein Structure

Non-polar Amino Acids


The side chains (R groups) of the amino acids can be divided into two major classes, those with non-polar side chains (shown here) and those with polar side chains.

Non polar side chains consist mainly of hydrocarbon. Any functional groups they contain are uncharged at physiological pH and are incapable of participating in hydrogen bonding.

The non-polar amino acids (shown here) include: alanine, cysteine, glycine, isoleucine, leucine, methionine, phenylalanine, proline, tryptophan, tyrosine and valine.

Name 3 letter code 1 letter code

2-D Structure

3-D Structure
 

Alanine

 

Ala

 

A

wpe12.jpg (2184 bytes)

Ca:  

Model:  

 

Cysteine

 

Cys

 

C

wpe1B.jpg (2400 bytes)

Ca:  

Model:  

 

Glycine

 

Gly

 

G

wpe13.jpg (2079 bytes)

Ca:  

Model:  

 

 

Isoleucine

 

Ile

 

I

wpe16.jpg (2947 bytes)

Ca:  

Model:  

 

 

Leucine

 

Leu

 

L

wpe15.jpg (2956 bytes)

Ca:  

Model:  

 

 

Methionine

 

Met

 

M

wpe1C.jpg (3011 bytes)

Ca:  

Model:  

 

 

Phenylalanine

 

Phe

 

F

wpe17.jpg (2975 bytes)

Ca:  

Model:  

 

 

Proline

 

Pro

 

P

wpe1A.jpg (2107 bytes)

Ca:  

Model:  

 

 

Tryptophan

 

Trp

 

W

wpe18.jpg (3580 bytes)

Ca:  

Model:  

 

 

Tyrosine

 

Tyr

 

Y

wpe19.jpg (3196 bytes)

Ca:  

Model:  

 

 

Valine

 

Val

 

V

wpe14.jpg (2676 bytes)

Ca:  

Model:  

 


Copyright 1998, 1999 by Frank R. Gorga;   Page maintained by F.R. Gorga;   Last updated: 03/05/01