* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download proteinszednii
Silencer (genetics) wikipedia , lookup
Point mutation wikipedia , lookup
Ancestral sequence reconstruction wikipedia , lookup
Biochemical cascade wikipedia , lookup
Ribosomally synthesized and post-translationally modified peptides wikipedia , lookup
Gene expression wikipedia , lookup
Paracrine signalling wikipedia , lookup
Expression vector wikipedia , lookup
Evolution of metal ions in biological systems wikipedia , lookup
Biosynthesis wikipedia , lookup
Magnesium transporter wikipedia , lookup
Genetic code wikipedia , lookup
Amino acid synthesis wikipedia , lookup
G protein–coupled receptor wikipedia , lookup
Bimolecular fluorescence complementation wikipedia , lookup
Metalloprotein wikipedia , lookup
Signal transduction wikipedia , lookup
Interactome wikipedia , lookup
Nuclear magnetic resonance spectroscopy of proteins wikipedia , lookup
Protein purification wikipedia , lookup
Protein structure prediction wikipedia , lookup
Western blot wikipedia , lookup
Two-hybrid screening wikipedia , lookup
Protein–protein interaction wikipedia , lookup
Proteins Author: Petra Zedníčková A protein • A protein is a complex, highmolecular-weight organic compound that consists of amino acids joined by peptide bonds Proteins • Proteins are essential to the structure and function of all living cells and viruses • Many proteins are enzymes or subunits • Other proteins play structural or mechanical roles • Proteins are broken down into polypeptides to provide amino acids for the organism (bílkoviny jsou rozštěpeny na polypeptidů a tak poskytují aminokyseliny pro organismus) Proteins • Pepsinogen is converted into the enzyme pepsin when it comes into contact with hydrochloric acid • Pepsin is the only proteolytic enzyme that digests collagen, the major protein of connective tissue Class • Proteins are one of the classes of biomacromolecules, alongside polysacharides, lipids, and nucleic acids, that make up the primary constituents of living things Protein regulation • Various molecules and ions are able to bind to specific sites on proteins • These sites are called binding sites • They exhibit (vykazují) chemical specificity specifiku, přesnost • The particle that binds is called a ligand • The strength of ligand-protein binding is a property of the binding site known as affinity „Stabilita / síla vazby ligand-bílkovina je schopnost vazebného místa nazývaná afinita“ Diversity • Proteins are generally large molecules, having molecular masses of up to 3,000,000 • Long chains of amino acids are almost universally referred to as proteins, but shorter strings of amino acids are referred to as "polypeptides," „peptides" or rarely, "oligopeptides" Role of protein FUNCTION • Proteins are involved in practically every function performed by a cell, including regulation of cellular functions such as signal transduction and metabolism • The protein involved in functions control almost all the molecular processes of the body Bílkoviny řídí téměř všechny molekulové procesy v těle. Role of protein NUTRITION • Protein is an important macronutrient to the human diet, supplying the body's needs for nitrogen and amino acids, the building blocks of proteins • Protein deficiency can lead to symptoms such as fatigue (vyčerpanost, únava), insulin resistance, hair loss, loss of hair pigment, loss of muscle mass, low body temperature, hormonal irregularities,… End Thank you very much for your kind attention Thank you very much for your kind attention Thank you very much for your kind attention Thank you very much for your kind attention Thank you very much for your kind attention Thank you very much for your kind attention Thank you very much for your kind attention