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Bookmark or Share- 9.3.1: Proteins - Biology LibreTextsProteins are a class of biomolecules that perform an array of functions in biological systems. Some proteins serve as catalysts for specific biochemical reactions. Other proteins act as signaling molecules that allow cells to "talk" with one another. Proteins, like keratin in fingernails, can also act in a structural capacity.
- Proteins: Properties, Structure, Types, Functions - Microbe NotesWhat are Proteins? Proteins are highly complex macromolecules consisting of one or more long chains of amino acids linked together by peptide bonds. A protein is a macronutrient that is present in all living beings and is directly involved in various metabolic pathways. Proteins are species-specific and are unique to each organism.
- What Are Proteins? Protein Definition, Functions, ExamplesProteins are a large class of biomolecules and macromolecules consisting of chains of amino acids called polypeptides. While simple proteins consist of a single polypeptide, many proteins consists of multiple polypeptide subunits.
- Proteins and Polypeptides – Basics, Structures, Functions, and PropertiesProteins are organic compounds that contain four elements: nitrogen, carbon, hydrogen, and oxygen. To comprehend the full scope of proteins, it is crucial to understand various properties, including the basic biological molecule, peptides, polypeptide chains, amino acids, protein structures, and the processes of protein denaturation.
- Protein | Definition, Structure, & Classification | BritannicaProteins provide many of the structural elements of a cell, and they help to bind cells together into tissues. Proteins, in the form of antibodies, protect animals from disease, and many hormones are proteins. Proteins control the activity of genes and regulate gene expression.
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