All Topics  
Fibrous protein

 

 
   Email Print
   Bookmark   Link
 

 

Fibrous protein
 
 
  Topics Fibrous protein Topic Home

Scleroproteins are one of the two main classes of protein tertiary structure
Tertiary structure

In biochemistry and chemistry, the tertiary structure of a protein or any other macromolecule is its three-dimensional structure, as defined by the atomic coordinates....
 (the other being globular protein
Globular protein

Globular proteins, or spheroproteins are one of the two main protein classes, comprising sphere-like proteins that are more or less soluble in aqueous solution ....
s).

They are also called fibrous proteins.

form long protein filament
Protein filament

In biology, a filament is a long chain of protein subunits, such as those found in hair, muscle, or in flagella. They are often bundled together for strength and rigidity....
s, rod- or wire-like shapes. They are usually inert
Inert

In English, to be inert is to be in a state of doing little or nothing....
 structural or storage proteins.






Discussion
Ask a question about 'Fibrous protein'
Start a new discussion about 'Fibrous protein'
Answer questions from other users
Full Discussion Forum



Encyclopedia


Collagentriplehelix
Scleroproteins are one of the two main classes of protein tertiary structure
Tertiary structure

In biochemistry and chemistry, the tertiary structure of a protein or any other macromolecule is its three-dimensional structure, as defined by the atomic coordinates....
 (the other being globular protein
Globular protein

Globular proteins, or spheroproteins are one of the two main protein classes, comprising sphere-like proteins that are more or less soluble in aqueous solution ....
s).

They are also called fibrous proteins.

Characteristics

They form long protein filament
Protein filament

In biology, a filament is a long chain of protein subunits, such as those found in hair, muscle, or in flagella. They are often bundled together for strength and rigidity....
s, rod- or wire-like shapes. They are usually inert
Inert

In English, to be inert is to be in a state of doing little or nothing....
 structural or storage proteins. They are generally water-insoluble
Solubility

Solubility is often seen as a property of a substance; for instance the solubility of a solid substance usually refers to the concentration of the substance in a liquid that has reached equilibrium with the substance in solid phase ....
 and are found as an aggregate
Aggregate

An aggregate is a collection of items that are gathered together to form a total quantity. It may refer also to:* Aggregate , in materials science, a component of a composite material used to resist compressive stress....
 due to hydrophobic R group
R group

R group may refer to:* Side chain in chemistry* Tempered representation in mathematics...
s that stick out of the molecule. The amino acid sequences they are made from often have limited residue
Residue (chemistry)

In chemistry, residue refers to the material remaining after a distillation or an evaporation, or to a portion of a larger molecule, such as a methyl group....
s with repeats. These can form unusual secondary structure
Secondary structure

In biochemistry and structural biology, secondary structure is the general three-dimensional form of local segments of biopolymers such as proteins and nucleic acids ....
s, e.g. collagen
Collagen

Collagen is the main protein of connective tissue in animals and the most abundant protein in mammals, making up about 25% to 35% of the whole-body protein content....
 triple helix
Helix

A helix is a special kind of space curve, i.e. a Differentiable manifold curve in three-space. As a mental image of a helix one may take the spring ....
. The structures often contain 'cross-links' between chains, for example cys-cys disulfide bond
Disulfide bond

In chemistry, a disulfide bond is a single covalent bond derived from the coupling of thiol groups. The linkage is also called an SS-bond or disulfide bridge....
s between keratin
Keratin

Keratins are a family of fibrous protein; tough and insoluble, they form the hard but mineral structures found in reptiles, birds, amphibians and mammals....
 chains.

Globular protein
Globular protein

Globular proteins, or spheroproteins are one of the two main protein classes, comprising sphere-like proteins that are more or less soluble in aqueous solution ....
s tend to denature more easily than fibrous proteins.

Functions

They usually play a role which is protective or supportive.

They are usually used to construct connective tissue
Connective tissue

Connective tissue is a form of fibrous biological tissue.It is one of the four types of tissue in traditional classifications .Collagen is the main protein of connective tissue in animals and the most abundant protein in mammals, making up about 25% of the total protein content....
s, tendon
Tendon

A tendon is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension . Tendons are similar to ligaments except that ligaments join one bone to another....
s, bone matrix and muscle fiber.

Attempts at artificial synthesis have been made.

Examples

Examples of include keratin
Keratin

Keratins are a family of fibrous protein; tough and insoluble, they form the hard but mineral structures found in reptiles, birds, amphibians and mammals....
s, collagen
Collagen

Collagen is the main protein of connective tissue in animals and the most abundant protein in mammals, making up about 25% to 35% of the whole-body protein content....
s and elastin
Elastin

Elastin is a protein in connective tissue that is Elasticity and allows many tissues in the body to resume their shape after stretching or contracting....
s.

Another example is fibroin
Fibroin

Fibroin is a type of protein created by Bombyx mori in the production of silk. Silk emitted by the silkworm consists of two main proteins, sericin and fibroin, fibroin being the structural center of the silk, and serecin being the sticky material surrounding it....
.

See also

  • Wikipedia:MeSH_D12.776#MeSH_D12.776.860_---_scleroproteins


External links