Lecture

Protein Domains & Interactions

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In course

CH-411: Cellular signalling

Presentation of selected signalling pathways with emphasis on both the mechanism of action of the molecules involved, molecular interactions and the role of their spatio-temporal organization within the cell, considering cellular dimensions and conditions. ...

Description

This lecture covers the mediation of protein interactions by domains, scaffolds, and local concentrations. It delves into the early days of biochemistry, metabolic pathways, cellular signaling, and biological networks. The lecture also explores the molecular organization of cellular signaling and the regulation of protein activity through domains. Additionally, it discusses the combination of domains with different functions, the concept of effective molarity, and the role of scaffolds in regulating and integrating proteins. The presentation concludes with an overview of protein-protein interaction networks and genome-wide approaches to studying protein interactions.

Instructor

Rudolf Hovius

Expertise Â•Protein structure, expression & purificationÂ•Molecular interaction & receptor activationÂ•Fluorescence imaging & spectroscopySignalling & sensing Mission => Teaching: Lecture courses, tutorials and practicals in biochemistry, biophysical chemistry of membranes and signalling processes. Participating to the Commission d'Enseignement and Commission de l'Ecole Doctorale of Chemistry and Chemical Engineering.=> Research interests: Protein function and structure, Membrane protein (especially recepto

Official source

Related concepts (32)

Protein–protein interaction

Protein–protein interactions (PPIs) are physical contacts of high specificity established between two or more protein molecules as a result of biochemical events steered by interactions that include electrostatic forces, hydrogen bonding and the hydrophobic effect. Many are physical contacts with molecular associations between chains that occur in a cell or in a living organism in a specific biomolecular context. Proteins rarely act alone as their functions tend to be regulated.

Metabolic pathway

In biochemistry, a metabolic pathway is a linked series of chemical reactions occurring within a cell. The reactants, products, and intermediates of an enzymatic reaction are known as metabolites, which are modified by a sequence of chemical reactions catalyzed by enzymes. In most cases of a metabolic pathway, the product of one enzyme acts as the substrate for the next. However, side products are considered waste and removed from the cell. These enzymes often require dietary minerals, vitamins, and other cofactors to function.

Protein

Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, providing structure to cells and organisms, and transporting molecules from one location to another. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in protein folding into a specific 3D structure that determines its activity.

Metabolism

Metabolism (məˈtæbəlɪzəm, from μεταβολή metabolē, "change") is the set of life-sustaining chemical reactions in organisms. The three main functions of metabolism are: the conversion of the energy in food to energy available to run cellular processes; the conversion of food to building blocks for proteins, lipids, nucleic acids, and some carbohydrates; and the elimination of metabolic wastes. These enzyme-catalyzed reactions allow organisms to grow and reproduce, maintain their structures, and respond to their environments.

Metabolic network

A metabolic network is the complete set of metabolic and physical processes that determine the physiological and biochemical properties of a cell. As such, these networks comprise the chemical reactions of metabolism, the metabolic pathways, as well as the regulatory interactions that guide these reactions. With the sequencing of complete genomes, it is now possible to reconstruct the network of biochemical reactions in many organisms, from bacteria to human.

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