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Related Concept Videos

Type IV Collagen of Basal Lamina01:05

Type IV Collagen of Basal Lamina

Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen  forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
A type IV collagen molecule has six alpha chains which can exist in...
Fibril-associated Collagen01:11

Fibril-associated Collagen

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...
Collagens are the Major Structural Proteins of ECM01:13

Collagens are the Major Structural Proteins of ECM

Three main types of fibers are secreted by fibroblasts: collagen fibers, elastic fibers, and reticular fibers. Collagen fiber is made from fibrous protein subunits linked together to form a long, straight fiber. Collagen fibers, while flexible, have great tensile strength, resist stretching, and give ligaments and tendons their characteristic resilience and strength. These fibers hold connective tissues together, even during the body's movement.
Connective tissue proper includes loose...
Structural Protein Function01:56

Structural Protein Function

Structural proteins are a category of proteins responsible for functions ranging from cell shape and movement to providing support to major structures such as bones, cartilage, hair, and muscles. This group includes proteins such as collagen, actin, myosin, and keratin.
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Protein and Protein Structure

Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme can...
Protein Organization01:13

Protein Organization

Overview

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Updated: May 14, 2026

Revealing the Cytoskeletal Organization of Invasive Cancer Cells in 3D
11:09

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Published on: October 26, 2013

Backbone Dynamics of Triple-helical Collagen-like Structure.

Y A Lazarev1, A V Lazareva, V M Komarov

  • 1Russian Academy of Sciences, Institute of Cell Biophysics, Pushchino, Moscow Reg.

Journal of Biological Physics
|January 25, 2013
PubMed
Summary

Collagen

Area of Science:

  • Biophysics
  • Structural Biology
  • Biochemistry

Background:

  • Collagen's triple helix structure is crucial for its function.
  • Understanding backbone dynamics is key to collagen's role in proteins.

Purpose of the Study:

  • To investigate backbone dynamics in collagen-like triple helices.
  • To elucidate the role of these dynamics in collagen functioning.

Main Methods:

  • Infrared spectroscopy
  • Hydrogen-exchange method
  • Study of synthetic collagen analogs (oligotripeptides)

Main Results:

  • High-frequency backbone dynamics are regulated by atomic contact interactions.
  • Low-frequency nonlinear dynamics depend on interpeptide hydrogen bond conjugation.
Keywords:
Backbone dynamicsCollagenNatural selectionTriple helix

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Imaging Denatured Collagen Strands In vivo and Ex vivo via Photo-triggered Hybridization of Caged Collagen Mimetic Peptides

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In vitro Synthesis of Native, Fibrous Long Spacing and Segmental Long Spacing Collagen
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Published on: September 20, 2012

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Imaging Denatured Collagen Strands In vivo and Ex vivo via Photo-triggered Hybridization of Caged Collagen Mimetic Peptides

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  • Native collagens exhibit natural selection control over nonlinear dynamics for optimal function.
  • Conclusions:

    • Backbone dynamics play a vital role in collagen formation, function, and fibril utilization.
    • Non-denaturational micro-unfolding dynamics are optimized by natural selection.
    • Insights into collagen dynamics can inform protein engineering and therapeutic strategies.