Collagen Binding
Collagen Binding - Related Videos
07:25
Collagen Hydrogels
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2023
Collagen is another widely used biomaterial that has found popularity in commercial applications, such as photography. Collagen has more recently been used in tissue engineering applications, by creating hydrogels that provide structure to engineered tissue. This video introduces collagen as a biomaterial, demonstrates how it is harvested from porcine skin, and shows how the material is used to create a hydrogel for tissue engineering applications. Finally, several applications of the material...
07:03
Imaging Denatured Collagen Strands In vivo and Ex vivo via Photo-triggered Hybridization of Caged Collagen Mimetic Peptides
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Cited by 18 •
2014
This procedure demonstrates in vivo near IR fluorescence imaging of collagen remodeling activities in mice as well as ex vivo staining of collagens in tissue sections using caged collagen mimetic peptides that can be photo-triggered to hybridize with denatured collagen strands.
02:18
The Equilibrium Binding Constant and Binding Strength
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2020
The equilibrium binding constant (Kb) quantifies the strength of a protein-ligand interaction. Kb can be calculated as follows when the reaction is at equilibrium: where P and L are the unbound protein and ligand, respectively, and PL is the protein-ligand complex. As the amount of bound ligand is also related to the rate of ligand binding, experiments can also determine Kb by examining the rates of protein-ligand association (kon) and dissociation (koff) using the following ratio: Thus,...
05:17
An Improved Method for the Preparation of Type I Collagen From Skin
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Cited by 23 •
2014
Traditional procedures for the isolation of soluble type 1 collagen (COL1) require about 10 days from start to finish because of lengthy buffer incubations and laborious resuspensions of fibrils. Here, we describe a means to purify COL1 from small dermal biopsies in less than 3 hr.
01:11
Fibril-associated Collagen
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2023
Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated collagens interrupted triple-helices). FACIT help connect and attach the collagen fibrils with each other as well as with other proteins of the extracellular matrix. For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
FAQs
Selectivity can arise from complementary molecular interactions with collagen’s triple-helical structure or from recognition of particular amino acid sequences. Protein domains, peptides, and engineered molecules may therefore be designed or selected to associate with collagen through different molecular features. These interactions determine whether a functional cargo becomes localized, anchored, or retained on collagen-rich materials.
The interaction may rely on the overall triple-helical architecture of collagen or on specific amino acid sequences within the protein. These represent distinct recognition principles rather than interchangeable descriptions. In bioengineering designs, that distinction helps explain how different collagen-binding proteins, peptides, or engineered molecules can achieve association with the same matrix while using different complementary molecular contacts.
Localization places a biological or therapeutic function where collagen is present instead of leaving the function broadly distributed. Binding can anchor or retain a cargo on a collagen-rich material, giving the engineered system spatial control over its activity. This is especially relevant when scaffolds, hydrogels, or tissue matrices serve as the intended site for a bioactive function.
Scaffolds and hydrogels can be functionalized with collagen-binding proteins, peptides, or engineered molecules so that added biological functions associate with collagen-containing regions. The binding element provides a connection between the material and the collagen matrix, while the attached function remains localized there. This approach supports engineered materials intended to interact directly with extracellular matrices.
A collagen-binding domain can be linked to a biomolecule or therapeutic cargo to promote its association with collagen-rich tissue matrices. Rather than relying only on unrestricted distribution, the design uses collagen recognition to localize or retain the cargo at the matrix. This provides a bioengineering strategy for directing biomolecular functions toward sites containing collagen.
In imaging systems, collagen binding can help position an imaging-related molecule within collagen-rich extracellular matrices. In regenerative systems, the same principle can localize biological functions on scaffolds, hydrogels, or tissue matrices. Because collagen is a major structural component of many extracellular matrices, binding provides a direct way to connect engineered functions with matrix-associated environments.