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2 edition of Collagen self-assembly found in the catalog.

Collagen self-assembly

Darren Anderson

Collagen self-assembly

a complementary experimental and theoretical perspective

by Darren Anderson

  • 378 Want to read
  • 33 Currently reading

Published .
Written in English


About the Edition

Collagen is the major structural protein in mammals, and forms the basis of a variety of tissues essential for animal life, including bone, skin, teeth, cornea, tendon, and others. It self-assembles---both in vivo and in vitro---into a variety of biologically important structures, and this self-assembly process is highly dependent on solution pH, ionic strength, and the concentration of the collagen monomer. Kinetic studies demonstrating these dependencies are presented for the formation of the most important aggregate, native type collagen. The cold dissociation of collagen that does not contain complete non-helical telopeptide regions is also demonstrated. Based on these studies, five different types of collagen intermediates are identified and a partially hierarchical fibrillogenesis mechanism is proposed, along with a detailed kinetic model. In order to further understand collagen fibrillogenesis at a molecular level, a previously predicted structure of the collagen monomer is completely relaxed using condensed phase molecular dynamics simulations. For validation purposes, several experimentally solved model collagen structures are simulated in the same way, and the simulation results agree with the crystal structures to within the experimental error. Therefore, a structure of the collagen monomer is proposed that comprises the most complete model currently developed. This model forms the basis for two sets of simulations aimed at explaining the formation of several of the polymorphisms of collagen. First, a three-dimensional analysis of the interactions between collagen monomers in fibrillar aggregates is presented, including hydrophobic-hydrophobic and electrostatic interactions. An examination of these interactions as a function of overlap between monomers demonstrates the origin of the topological regularity in native type collagen. Second, a detailed molecular model for formation of segmental long spacing crystallites of collagen is presented, involving bridging of in-register collagen monomers by nucleotide triphosphate moieties at colocalized acidic and basic residues. The proposed model is confirmed using molecular mechanics and dynamics simulations.

Edition Notes

Statementby Darren Anderson.
The Physical Object
Paginationx, 349 leaves.
Number of Pages349
ID Numbers
Open LibraryOL20762947M
ISBN 109780494157466


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Collagen self-assembly by Darren Anderson Download PDF EPUB FB2

The complex and critical process of extracellular matrix (ECM) assembly is described in this book. Assembly may involve molecules interacting with molecules of the same matrix class, such as in collagen, or interactions between different ECM molecules, such as in basement membranes.

For this reason, the hierarchical self-assembly of collagen molecules and their inherent biochemical and biophysical signaling capacity have been a long-standing subject of study across multiple disciplines, including structural biochemistry, biomechanics, biomaterials and tissue engineering, computational modeling, and : David O.

Sohutskay, Theodore J. Puls, Sherry L. Voytik-Harbin. Collagen Hydrogel Fabrication Parameters. Most collagen hydrogels are prepared using type I collagen, which comprises 90% of the protein in human connective tiss20 and is easily extracted from animal tissue with minimal contamination by other collagens or proteins.

Type I collagen is a triple-helical protein formed Collagen self-assembly book nm periodic polypeptide chains with a total molecular weight near Cited by:   1. Molecular Structures and Functions of Collagen Collagen self-assembly book.

Energetics and Thermodynamics of Collagen Self-Assembly 3. X-ray Diffraction as a Tool for Studying Collagen Structure 4. Collagen Fibrillogenesis 5.

Collagen Types 6. Cross-Linking of Collagen 7. Interactions Between Structural Glycoproteins and Collagen : Most progress in computational design of protein self-assembly has focused on α-helical systems, exploring ways to concurrently optimize the stability and specificity of a target state.

Applying these methods to collagen self-assembly is very challenging, due to fundamental differences in folding and structure of α- versus triple-helices.

As a result of the self-assembly of collagen molecules under physiological conditions, the unique properties of collagen hydrogels, such as the porous structure, rich water content and the.

Collagen self-assembly and the development of tendon mechanical properties Article Literature Review in Journal of Biomechanics 36(10) November with Reads How we measure 'reads'. Additional AFM topography images showing type I collagen self-assembly on MoS 2, examples of tilted D-spacing on muscovite mica, and AFM calibration with nm × nm reference; additional CDF, histogram, and scatter plots showing comparisons of different concentrations on mica, before and after tilt angle correction, and mica data versus ovariectomied tissue data.

The desired mechanical and biological performances of collagen that have led to its broad application Collagen self-assembly book a building block in the biomedical field attributed to its intrinsic hierarchical structure from the nanoscale to macroscale, are discussed herein.

Modulating the self-assembly Cited by: ISBN: X: OCLC Number: Description: 1 online resource (xv, pages): illustrations (some color) Contents: Methods to characterize the nanostructure and molecular organization of amphiphilic peptide assemblies / V. Castelletto and I. Hamley --Solid-state NMR structural Collagen self-assembly book of self-assembled peptides with selective 13C and 15N isotopic labels.

This volume details methods and protocols on b-sheet assemblies and d into three parts chapters focus on expanding use of solid-state NMR as a powerful method to enhance structural understanding of self-assembled peptide materials, methods for the design, synthesis, and application of self-assembled peptide materials, and structural and mechanistic analyses of pathological.

Fibrillogenesis is the development of fine fibrils normally present in collagen fibers of connective is derived from the Greek fibrillo (meaning fibrils, or pertaining to fibrils) and genesis (to create, the process by which something is created).

The assembly of collagen fibrils, fibrillogenesis appears to be a self-assembly process although there is much speculation about the. Collagen / ˈ k ɒ l ə dʒ ɪ n / is the main structural protein Collagen self-assembly book the extracellular matrix in the various connective tissues in the body.

As the main component of connective tissue, it is the most abundant protein in mammals, making up from 25% to 35% of the whole-body protein content. Collagen consists of amino acids bound together to form a triple helix of elongated fibril known as a. Mimicking the multistep self-assembly of the fibrillar protein collagen is an important design challenge in biomimetic supramolecular chemistry.

Utilizing the complementarity of oppositely charged domains in short collagen-like peptides, we have devised a strategy for the self-assembly of these peptides into fibers. The strategy depends on the formation of a staggered triple helical species Cited by: Collagen: Volume I: Biochemistry - CRC Press Book.

This series was conceived with the idea of integrating current aspects of ongoing research in the collagen field. The book consists of a spectrum of papers which discus divers aspects such as X-ray structure, the thermodynamics and mechanism of fibrillogenesis, and the use of collagen as a.

Exploring collagen self-assembly by NMR. Lisitza, X. Huang, H. Hatabu and S. Patz, Phys. Chem. Chem. Phys.,12, Physical Chemistry Chemical Physics; books or book chapters) do not need to formally request permission to reproduce material contained in this article provided that the correct acknowledgement is given with the.

Title:Self-assembly of Functional Nanostructures by Short Helical Peptide Building Blocks VOLUME: 26 ISSUE: 2 Author(s):Santu Bera and Ehud Gazit* Affiliation:Department of Molecular Microbiology and Biotechnology, George S.

Wise Faculty of Life Sciences, Tel Aviv University, Ramat AvivDepartment of Molecular Microbiology and Biotechnology, George S. Wise Faculty of Life Sciences, Cited by: 4. Type I collagen was prepared from tilapia (Oreochromis niloticus) skin by acetic acid and pepsin process at 4 °C, respectively (ASC and PSC), and hot‐water method separately at 25, 35 and 45 °C (C‐25, C‐35 and C‐45).Their structure and self‐assembly property were discussed.

SDS‐PAGE patterns suggested that pepsin hydrolysis and the 35 and 45 °C extraction produced collagen with. organization and ultrastructure of collagen fibrils during self-assembly de novo. In chapter two, the real time dynamics of shear-induced collagen self-assembly was investigated.

Thin layers of collagen fibrils were produced by subjecting the solution of collagen molecules to shearing flow. The effects of both simple shear flow and confined. Exploiting peptide self-assembly to engineer novel biopolymers: tapes, ribbons, fibrils and fibres / A.

Aggeli [and others] --Ribbon-like lamellar structures from chain-folded polypeptides / E.D.T. Atkins --Design of self-assembling peptides as catalyst mimetics using synthetic combinatorial libraries / S.E. Blondelle [and others. Collagens were extracted from grass carp skin (GCC), grass carp scales (GSC), and crucian carp skin (CCC) using an acid-enzyme combination method, and their characteristics and self-assembly properties were analyzed.

Electrophoretic patterns characterized all three as type I collagens. An ultraviolet analysis identified the optimal wavelengths for collagen detection, while a Fourier transform Author: Li He, Wenting Lan, Yue Wang, Saeed Ahmed, Yaowen Liu.

Contact guidance or bidirectional migration along aligned fibers modulates many physiological and pathological processes such as wound healing and cancer invasion. Aligned 2D collagen fibrils epitaxially grown on mica substrates replicate many features of contact guidance seen in aligned 3D collagen fiber networks.

However, these 2D collagen self-assembled substrates are difficult to image Author: Juan Wang, Joseph Koelbl, Anuraag Boddupalli, Zhiqi Yao, Kaitlin M.

Bratlie, Ian C. Schneider. en fibril formation: • Tropocollagen spontaneously associate with each other and form collagen fibrils (Self- assembly).

• Aggregates in a staggered head-to-tail arrangement. 23 6. Cross-linking and fiber formation: • Tropocollagen molecules extensively cross-linked covalently both within and between molecules.

The self-assembly processes involved in collagen fibrillogenesis are of enormous importance to ECM pathology and proper animal development (see sidebar for a discussion of how collagen self-assembly might be directed away from deleterious protein aggregates). Fibril Structure. ‘Integrative Biology book of choice Collagen is the most important structural protein in biology and is responsible for the strength In fibrous collagens such as type I collagen, self-assembly of fibrils and fibers occurs by entropy-driven.

Coatings were formed by a self-assembly process whereby polysaccharides were added to acidic collagen molecule solution, followed by neutralization to induced self-assembly of collagen fibrils. Fibril formation resulted in collagen hydrogel formation. Hydrogels formed directly on Ti6Al4V surfaces, and fibrils adsorbed onto the by: 2.

Type I collagen was prepared from tilapia (Oreochromis niloticus) skin by acetic acid and pepsin process at 4 °C, respectively (ASC and PSC), and hot‐water method separately at 25, 35 and 45 °C (C‐25, C‐35 and C‐45).Their structure and self‐assembly property were discussed. SDS‐PAGE patterns suggested that pepsin hydrolysis and the 35 and 45 °C extraction produced collagen with.

Molecular Structure of Biological Materials: Structure, Function & Self-assembly Take-home Midterm Exam (Due Thursday, Nov. 17) 30% of the total grade. Please write a short description for each of the questions (10 point each). You need to think carefully and.Kotch and Raine also independently developed a novel peptide-based system for obtaining collagen-like triple-helical supramolecules via a Cited by: In vitro self-assembled collagen fibrils form a variety of different structures during dialysis.

The self-assembly is dependent on several parameters, such as concentrations of collagen and α 1-acid glycoprotein, temperature, dialysis time, and the acid a detailed understanding of the assembly pathway and structural features like banding pattern or mechanical properties it Cited by: 6.

Karunakar Kar, Yuh‐Hwa Wang and Barbara Brodsky, Sequence dependence of kinetics and morphology of collagen model peptide self‐assembly into higher order structures, Protein Science, 17, 6, Cited by: Journal of Biomimetics, Biomaterials and Biomedical Engineering Materials Science.

Defect and Diffusion Forum. From inside the book. penicillamine peptide Piez polypeptide Proc procollagen propeptide protein proteoglycans rabbit rat tail tendon regions residues role self-assembly sequence soluble solution specific stability structural glycoproteins structure of collagen studies sulfate surface synovial Collagen: Biochemistry Volume 1 of.

Helseth, D. Jr., and Veis, A., "Conformational studies on the telopeptides of collagen. Implications for intermolecular interactions", in The Chemistry and Biology of Mineralized Connective Tissues, A. Veis, ed., Elsevier North Holland, Inc.,pp.

Helseth DL Jr, Veis A. “Collagen self-assembly in vitro. Differentiating specific. This book studies ECM mechanics and mechanobiology at multi-scale with a focus on multi-disciplinary experimental and modeling studies in biomechanics experimentation, microscopy and image process, and multi-scale and multi-physics computational modeling.

Steve Hickey and Hilary Roberts come right out on page of their book, and make the statement, “Vitamin C and Tocotrienols can reverse coronary artery disease”. They would add the Tocotrienol form of Vitamin E to the Linus Pauling Protocol. Regarding heart disease, and atherosclerotic vascular disease, the authors state that “on the.

Self-assembly of collagen fibers and AFM investigation of the mechanical properties of the fibrils comprising these fibers. In Proceedings of the 7th dutch annual conference on biomedical engineering (pp. : J.A.J. van der Rijt, Pieter J. Dijkstra, Jan Feijen.

His research interests include connective tissue disorders, collagen self-assembly, tissue mechanical properties, pathobiology of implants, mechanobiology and non-invasive assessment of disease processes.

He has published over research papers and book chapters and is co-inventor on over 20 patents. Description of Research Expertise. Molecular weight of collagen & the measured critical concentration for self-assembly of fully processed collagen into fibrils at 37˚C Metazoa animals ID: Fraction of dry mass of tendon that is.

To investigate the influence of different silica precursors on collagen self-assembly, Eglin et al. [23] used potassium silicon tris-catecholate as silica precursor.

In this study, type I collagen solution (5 mg/ml) in m acetic acid was mixed with ml of cooled deionized water followed by sonication at 5°C for 20 by: 9. The excerpt below is from a Biochemistry book.

Collagen Volume I: Biochemistry ByMarcel E. Nimni Chapter 2 Energetics and Thermodynamics of Collagen Self-Assembly With George Némethy The structure of collagen is characterized by the hierarchical order of self-assembly of its constituent units.Collagen is unusual because it is a fibrous protein made of chains of around amino acids.

Three chains come together to form a triple helix, and in turn these long threads coalesce to form fibrous bundles. Hartgerink’s team sought to mimic this hierarchical self assembly.AB - High strength magnetic fields were used to align collagen gel formed into 4 mm diameter rods during the self assembly of type I collagen monomers into fibrils.

We developed an in vitro assay to study neurite elongation into magnetically aligned collagen gel rods (CGRs) from rat dorsal root ganglia (DRG) placed onto one end of the by: 1.