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Core - Cell Biology

    Chapter 6

    Protein Function

    6.1 : Ligand Binding Sites02:40

    6.1 : Ligand Binding Sites

    Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their ...

    7.6K views
    6.2 : Protein-Protein Interfaces02:04

    6.2 : Protein-Protein Interfaces

    Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs ...

    3.7K views
    6.3 : Conserved Binding Sites01:49

    6.3 : Conserved Binding Sites

    Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein ...

    1.7K views
    6.4 : Cofactors and Coenzymes01:24

    6.4 : Cofactors and Coenzymes

    Enzymes are proteins made of amino acids. The functional group of each constituent amino acid catalyzes a wide variety of chemical reactions via ionic ...

    10.9K views
    6.5 : Cooperative Allosteric Transitions01:58

    6.5 : Cooperative Allosteric Transitions

    Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand ...

    2.3K views
    6.6 : Protein Kinases and Phosphatases02:54

    6.6 : Protein Kinases and Phosphatases

    Proteins undergo chemical modifications that trigger changes in the charge, structure, and conformation of the proteins. Phosphorylation, acetylation, ...

    3.8K views
    6.7 : GTPases and their Regulation02:14

    6.7 : GTPases and their Regulation

    Guanine nucleotide-binding proteins (G-proteins), also known as GTPases, are a superfamily of proteins that regulate many cellular processes, such as cell ...

    2.2K views
    6.8 : Covalently Linked Protein Regulators02:04

    6.8 : Covalently Linked Protein Regulators

    Proteins can undergo many types of post-translational modifications, often in response to changes in their environment. These modifications play an ...

    1.6K views
    6.9 : Protein Complexes with Interchangeable Parts01:57

    6.9 : Protein Complexes with Interchangeable Parts

    Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. ...

    1.8K views
    6.10 : Mechanical Protein Function01:58

    6.10 : Mechanical Protein Function

    Proteins perform many mechanical functions in a cell. These proteins can be classified into two general categories- proteins that generate mechanical ...

    2.0K views
    6.11 : Structural Protein Function01:56

    6.11 : 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 ...

    2.7K views
    6.12 : Protein Networks02:26

    6.12 : Protein Networks

    An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other ...

    2.2K views
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