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Formation of Ordered Biomolecular Structures by the Self-assembly of Short Peptides
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The origins of polypeptide domains

Edward E Schmidt1, Christopher J Davies

  • 1Molecular Biosciences, Montana State University, Bozeman, MT 59717, USA. eschmidt@montana.edu

Bioessays : News and Reviews in Molecular, Cellular and Developmental Biology
|February 14, 2007
PubMed

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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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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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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.
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