prsndwg

7+ Year Member
Apr 19, 2009
1,115
1
Status
Pre-Dental
What are fibrous and globular proteins? what are he differences b/w them?
please give me some examples of them..

Thanks in advance
 
May 15, 2009
1,922
3
CA
Status
Dental Student
What are fibrous and globular proteins? what are he differences b/w them?
please give me some examples of them..

Thanks in advance
Fibrous proteins are those that assume a structural role in the body. As the name implies these proteins have a fibrous shape. Example: Collagen.

Globular proteins are those that assume an enzymatic/functional role in the body. As the name implies these proteins have a spherical shape. Example: Hemoglobin and almost all the enzymes in your body.
 
OP
prsndwg

prsndwg

7+ Year Member
Apr 19, 2009
1,115
1
Status
Pre-Dental
Fibrous proteins are those that assume a structural role in the body. As the name implies these proteins have a fibrous shape. Example: Collagen.

Globular proteins are those that assume an enzymatic/functional role in the body. As the name implies these proteins have a spherical shape. Example: Hemoglobin and almost all the enzymes in your body.
Perfect.. Would you consider the antibodies as globular protein since its not structural?
 

AndyK

10+ Year Member
7+ Year Member
Sep 24, 2007
530
4
Houston, TX
Status
Pre-Medical
Perfect.. Would you consider the antibodies as globular protein since its not structural?
Antibodies are DEFINATELY globular. Examples of fibrous proteins are myosin, actin, keratin, collagen, flagellin, etc.
 

solstice

5+ Year Member
Jul 26, 2009
373
0
Status
Dental Student
Perfect.. Would you consider the antibodies as globular protein since its not structural?
we only have two types of proteins: Structural (fibrous) and Globular. So if one is not structral then it is globular.

There are more types of Globular proteins than Structural. Globular proteins function as enzymes (i.e. pepsin), hormones (i.e. insulin), membrane pumps and channels (i.e. Na+/K+ pump and voltage gated sodium channels), membrane receptors (i.e. nicotinic receptors), intercellular and itracellular transport and storage (i.e. hemoglobin and Myoglobin), Osmotic regulators (i.e. Albumin), immune respose (i.e. antibodies) and more.

andyk has good examples of fibrous. think maintain and strenght to giude you for fibrous proteins.
 

jh311

10+ Year Member
Jan 20, 2009
37
0
utah
Status
Pre-Dental
so.... is a globular or fibrous protein representative of it's secondary structure since it deals with the overall conformation of the protein? I'm confused on the whole primary, secondary, tertiary, quaternary structures.
 

torque

Junior Member
10+ Year Member
Feb 28, 2005
103
27
Status
so.... is a globular or fibrous protein representative of it's secondary structure since it deals with the overall conformation of the protein? I'm confused on the whole primary, secondary, tertiary, quaternary structures.
Secondary structure is represented by fibrous protein.
Tertiary structure is represented by globular protein.
 

alanan84

D1
10+ Year Member
5+ Year Member
Mar 17, 2008
1,387
5
Status
Dental Student
so.... is a globular or fibrous protein representative of it's secondary structure since it deals with the overall conformation of the protein? I'm confused on the whole primary, secondary, tertiary, quaternary structures.
This is the way I understand it...

Primary structure - sequence of AA
Secondary structure - Alpha helix or beta sheet
Tertiary structure - bending of the secondary structure
Quaternary structure - formation of the protein by interaction of multiple tertiary structures (ie hemoglobin)