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Related Concept Videos

Conserved Binding Sites01:49

Conserved Binding Sites

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Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
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DNA as a Genetic Template02:05

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Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
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Protein Organization01:24

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Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
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Induced-fit Model01:13

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Most chemical reactions in cells require enzymes—biological catalysts that speed up the reaction without being consumed or permanently changed. They reduce the activation energy needed to convert the reactants into products. Enzymes are proteins, that usually work by binding to a substrate—a reactant molecule that they act upon.
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Ligand Binding Sites02:40

Ligand Binding Sites

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Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
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The DNA Helix01:07

The DNA Helix

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Deoxyribonucleic acid, or DNA, is the genetic material responsible for passing traits from generation to generation in all organisms and most viruses. DNA is composed of two strands of nucleotides that wind around each other to form a spring-like structure called a double helix. However, the double helix is not perfectly symmetrical. Instead, there are regularly occurring grooves in the structure. The major groove occurs where the sugar-phosphate backbones are relatively far apart. This space...
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Structure-based modeling of protein: DNA specificity.

Adam P Joyce, Chi Zhang, Philip Bradley

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    Summary
    This summary is machine-generated.

    Structural modeling advances our understanding of protein:DNA interactions, aiding in the rational design of DNA-binding proteins and novel specificities for genomic applications.

    Keywords:
    Binding specificityMolecular modelingProtein:DNA interactionsStructural modelingStructure predictionTranscription factor binding sites

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    Area of Science:

    • Molecular Biology
    • Structural Biology
    • Bioinformatics

    Background:

    • Protein:DNA interactions are fundamental to genome maintenance and expression.
    • Structural modeling offers a physicochemical approach to studying these interactions.
    • Understanding specificity is key to both biological function and engineering applications.

    Purpose of the Study:

    • To review recent advancements in the structural description of protein:DNA interactions.
    • To discuss the role of structural modeling in understanding interaction specificity.
    • To highlight future challenges and opportunities in the field.

    Main Methods:

    • Review of current literature on structural modeling of protein:DNA complexes.
    • Analysis of physicochemical principles governing protein:DNA binding.
    • Discussion of computational and experimental approaches.

    Main Results:

    • Recent structural data provide detailed insights into protein:DNA recognition mechanisms.
    • Structural modeling successfully rationalizes specificity of known DNA-binding proteins.
    • Progress enables the potential engineering of novel DNA-binding specificities.

    Conclusions:

    • Structural modeling is a powerful tool for dissecting protein:DNA interactions.
    • Further development is needed to fully exploit its potential in research and biotechnology.
    • The field holds promise for advancing our understanding and manipulation of genomic processes.