Peptide Terms

Glossary

Online learning

Peptides Index

Absorption
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The process by which a substance is taken up by cells or tissues.

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Acidic peptides
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Peptides containing negatively charged amino acids, influencing solubility and stability.

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Active site
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The specific region of an enzyme where substrate molecules bind and undergo a reaction.

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Adenosine triphosphate (ATP)
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A molecule that provides energy to drive cellular processes.

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Affinity
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The strength of the interaction between a ligand and a receptor.

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Agonist
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A molecule that binds to a receptor and activates a biological response.

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Alanine
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A nonpolar amino acid involved in protein structure and metabolism.

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Alpha helix
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A common secondary structure in proteins, characterized by a coiled shape.

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Amide bond
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A chemical bond formed between a carboxyl group and an amine group, linking amino acids.

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Amine group
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A functional group containing nitrogen that is found in amino acids and proteins.

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Amino acid sequence
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The specific order of amino acids in a peptide or protein.

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Amphiphilic peptides
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Peptides containing both hydrophilic and hydrophobic regions.

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Amylin
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A peptide hormone involved in glucose metabolism and appetite regulation.

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Anabolic
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A process that promotes the synthesis of complex molecules from simpler ones, often related to muscle growth.

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Analog
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A modified molecule that mimics the structure and function of another compound.

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Angiogenesis
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The formation of new blood vessels, essential for healing and tissue growth.

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Anion exchange chromatography
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A method for separating negatively charged molecules.

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Antagonist
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A molecule that blocks the activity of a receptor.

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Anti-aging
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A field focused on slowing or reversing the aging process.

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Antibody
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A protein produced by the immune system to identify and neutralize foreign substances.

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Antimicrobial peptide
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Peptides that exhibit antimicrobial properties, defending against bacteria and fungi.

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Antimicrobial resistance
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The ability of microbes to resist antimicrobial agents.

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Apoptosis
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A form of programmed cell death crucial for maintaining cellular balance.

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Apoptotic pathways
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Molecular pathways that lead to programmed cell death.

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Arginine
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A semi-essential amino acid involved in nitric oxide production and immune function.

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Aromatic amino acids
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Amino acids containing aromatic rings that contribute to protein function and structure.

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Autoimmune response
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The immune system's mistaken attack on the body's own tissues.

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Auxiliary peptides
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Peptides that enhance the function of other peptides or proteins.

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Backbone
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The structural framework of a protein or peptide chain.

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Bactericidal
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A substance that kills bacteria or inhibits their growth.

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Beta sheet
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A common secondary structure in proteins consisting of beta strands linked by hydrogen bonds.

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Beta-turn
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A type of protein secondary structure involving a sharp turn.

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Bioactive
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A term referring to a substance that has a physiological effect on the body.

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Bioavailability
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The proportion of a substance that enters the bloodstream and is available for use by the body.

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Bioconjugation
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The process of chemically linking molecules for enhanced stability or function.

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Biodegradable
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A material that can be broken down by natural biological processes.

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Bioinformatics
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The application of computational methods in biological research.

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Biological half-life
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The time it takes for half of a substance to be eliminated.

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Biomarkers
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Molecules that indicate disease presence or biological states.

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Biosynthesis
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The process of producing biological molecules within a cell.

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Biotinylation
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A biochemical process of attaching biotin to proteins for detection or purification.

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Blood-brain barrier (BBB)
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A selective barrier that prevents certain substances from entering the brain.

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Bolus
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A large dose of medication or substance given at once.

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Branched-chain amino acids (BCAAs)
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Essential amino acids that help build muscle and regulate protein metabolism.

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Breakpoint
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A critical point in a reaction or metabolic pathway where a change occurs.

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Bypass metabolism
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A metabolic route that avoids first-pass metabolism by the liver.

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CRH (Corticotropin-releasing hormone)
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A hormone involved in the regulation of stress responses and inflammation.

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Calcitonin
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A peptide hormone that regulates calcium and phosphate levels in the blood.

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Caloric restriction
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A dietary practice that reduces calorie intake to promote longevity and metabolic health.

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Capillary permeability
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The ability of substances to pass through capillary walls into surrounding tissues.

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Carbohydrates
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Organic molecules consisting of carbon, hydrogen, and oxygen that provide energy.

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