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  2. Fibrous protein - Wikipedia

    en.wikipedia.org/wiki/Fibrous_protein

    In molecular biology, fibrous proteins or scleroproteins are one of the three main classifications of protein structure (alongside globular and membrane proteins). [1] Fibrous proteins are made up of elongated or fibrous polypeptide chains which form filamentous and sheet-like structures. This kind of protein can be distinguished from globular ...

  3. Intermediate filament - Wikipedia

    en.wikipedia.org/wiki/Intermediate_filament

    Intermediate filaments (IFs) are cytoskeletal structural components found in the cells of vertebrates, and many invertebrates. [1] [2] [3] Homologues of the IF protein have been noted in an invertebrate, the cephalochordate Branchiostoma. [4] Intermediate filaments are composed of a family of related proteins sharing common structural and ...

  4. Lamin - Wikipedia

    en.wikipedia.org/wiki/Lamin

    Furthermore, sequence comparisons between lamins and IF proteins support that an amino-acid sequence that is characteristic of lamins is found in early forms of IF proteins. This sequence is lost in later forms of IF proteins, suggesting that the structure of later intermediate filaments diverged.

  5. Collagen - Wikipedia

    en.wikipedia.org/wiki/Collagen

    Most collagen forms in a similar manner, but the following process is typical for type I: Inside the cell Two types of alpha chains – alpha-1 and alpha 2, are formed during translation on ribosomes along the rough endoplasmic reticulum (RER). These peptide chains known as preprocollagen, have registration peptides on each end and a signal ...

  6. Fibril - Wikipedia

    en.wikipedia.org/wiki/Fibril

    Elastin is a fibrous protein common in various soft tissues, like skin, blood vessels and lung tissue. Each monomer connects with each other, forming a 3D network, with ability to endure over 200% strain before deformation. [13] Keratin is a structural protein mainly found in hair, nails, hooves, horns, quills. [14]

  7. Protein - Wikipedia

    en.wikipedia.org/wiki/Protein

    This binding ability is mediated by the tertiary structure of the protein, which defines the binding site pocket, and by the chemical properties of the surrounding amino acids' side chains. Protein binding can be extraordinarily tight and specific; for example, the ribonuclease inhibitor protein binds to human angiogenin with a sub-femtomolar ...

  8. Fibronectin - Wikipedia

    en.wikipedia.org/wiki/Fibronectin

    It is secreted by various cells, primarily fibroblasts, as a soluble protein dimer and is then assembled into an insoluble matrix in a complex cell-mediated process. Fibronectin plays a major role in cell adhesion , growth , migration , and differentiation , and it is important for processes such as wound healing and embryonic development . [ 6 ]

  9. Protein filament - Wikipedia

    en.wikipedia.org/wiki/Protein_filament

    Developing wood cells in poplar showing microfilaments (in green) and cell nuclei (in red) In biology, a protein filament is a long chain of protein monomers, such as those found in hair, muscle, or in flagella. [1] Protein filaments form together to make the cytoskeleton of the cell. They are often bundled together to provide support, strength ...

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