Peptide Glossary
Welcome to our comprehensive glossary of peptide-related terms. This guide is designed to help you understand the fundamental concepts and key terms in peptide science, from amino acids to cellular contexts.
Introduction to Peptide Science: Foundations and Frontiers
Peptides, comprising amino acids linked by peptide bonds, are a fundamental category of biological molecules with pivotal roles in cellular processes and scientific research applications. Understanding the dichotomy between agonists and antagonists and their interaction with cellular receptors is essential for comprehending the mechanistic basis of peptide function in biological systems.
Key Terms in Peptide Science
Amino Acids
The building blocks of proteins and peptides, consisting of a central carbon atom, an amino group, a carboxyl group, and a distinctive side chain.
The building blocks of proteins and peptides, consisting of a central carbon atom, an amino group, a carboxyl group, and a distinctive side chain.
Bioactive Peptides
Peptides studied for their interactions with biological systems in laboratory research, including antimicrobial and immunological signalling studies.
Peptides studied for their interactions with biological systems in laboratory research, including antimicrobial and immunological signalling studies.
BAC Water
Bacteriostatic water, used as a diluent for reconstituting lyophilised peptides.
Bacteriostatic water, used as a diluent for reconstituting lyophilised peptides.
Cold-Chain
Temperature-controlled handling from storage through to delivery, used to protect sensitive compounds.
Temperature-controlled handling from storage through to delivery, used to protect sensitive compounds.
COA (Certificate of Analysis)
An independent lab report confirming a batch’s identity and purity.
An independent lab report confirming a batch’s identity and purity.
Enzymes
Proteins that catalyse biochemical reactions in living organisms, often playing critical roles in metabolism and signalling pathways.
Proteins that catalyse biochemical reactions in living organisms, often playing critical roles in metabolism and signalling pathways.
GHRP (Growth Hormone-Releasing Peptides)
Synthetic peptides studied for their interaction with growth hormone (GH) signalling pathways.
Synthetic peptides studied for their interaction with growth hormone (GH) signalling pathways.
HPLC / MS
Analytical methods (High-Performance Liquid Chromatography / Mass Spectrometry) used to verify peptide purity and identity.
Analytical methods (High-Performance Liquid Chromatography / Mass Spectrometry) used to verify peptide purity and identity.
IU / mg
Units used to express peptide quantity; check each product page for the specific unit used.
Units used to express peptide quantity; check each product page for the specific unit used.
Lyophilised
Freeze-dried into a stable powder form for storage and shipping.
Freeze-dried into a stable powder form for storage and shipping.
Mitochondrial Peptides
Peptides that are encoded by mitochondrial DNA or influence mitochondrial function, involved in energy production and apoptosis.
Peptides that are encoded by mitochondrial DNA or influence mitochondrial function, involved in energy production and apoptosis.
Neuropeptides
Small protein-like molecules used by neurons to communicate with each other, involved in many physiological signalling pathways studied in neuroscience research.
Small protein-like molecules used by neurons to communicate with each other, involved in many physiological signalling pathways studied in neuroscience research.
Oligopeptide
A peptide consisting of a few amino acids, typically between two and twenty.
A peptide consisting of a few amino acids, typically between two and twenty.
Peptide Bond
A covalent chemical bond formed between two amino acid molecules when the carboxyl group of one molecule reacts with the amino group of the other, releasing a molecule of water (H2O).
A covalent chemical bond formed between two amino acid molecules when the carboxyl group of one molecule reacts with the amino group of the other, releasing a molecule of water (H2O).
Peptide Hormones
Chains of amino acids that function as hormones in the body, such as insulin and glucagon, which are involved in metabolic signalling pathways.
Chains of amino acids that function as hormones in the body, such as insulin and glucagon, which are involved in metabolic signalling pathways.
Peptidomimetics
Small protein-like chains designed to mimic the biological activity of a natural peptide, but with enhanced stability, bioavailability, or specificity.
Small protein-like chains designed to mimic the biological activity of a natural peptide, but with enhanced stability, bioavailability, or specificity.
Polypeptide
A long, continuous chain of amino acids. Polypeptides with more than 50 amino acids are typically considered proteins.
A long, continuous chain of amino acids. Polypeptides with more than 50 amino acids are typically considered proteins.
Signal Peptide
A short peptide present at the N-terminus of a protein that directs the protein to specific destinations within or outside the cell.
A short peptide present at the N-terminus of a protein that directs the protein to specific destinations within or outside the cell.
Somatostatin
A peptide hormone that inhibits the release of several other hormones, including growth hormone and insulin, playing a critical role in the endocrine system.
A peptide hormone that inhibits the release of several other hormones, including growth hormone and insulin, playing a critical role in the endocrine system.
Synthetic Peptides
Peptides that are artificially made using peptide synthesis techniques, often designed to mimic or modify the function of natural peptides for research purposes.
Peptides that are artificially made using peptide synthesis techniques, often designed to mimic or modify the function of natural peptides for research purposes.
Cellular and Molecular Terms
Cell Membrane
The semipermeable membrane surrounding the cytoplasm of a cell, which regulates the passage of substances in and out of the cell.
The semipermeable membrane surrounding the cytoplasm of a cell, which regulates the passage of substances in and out of the cell.
Cytokines
Small proteins released by cells that have a specific effect on the interactions and communications between cells, often involved in immune responses.
Small proteins released by cells that have a specific effect on the interactions and communications between cells, often involved in immune responses.
Endoplasmic Reticulum (ER)
A network of membranous tubules within the cytoplasm of a cell, involved in protein and lipid synthesis.
A network of membranous tubules within the cytoplasm of a cell, involved in protein and lipid synthesis.
Golgi Apparatus
An organelle in cells that modifies, sorts, and packages proteins for secretion or delivery to other organelles.
An organelle in cells that modifies, sorts, and packages proteins for secretion or delivery to other organelles.
Ligand
A molecule that binds to a specific site on a protein, such as a receptor, influencing the function of the protein.
A molecule that binds to a specific site on a protein, such as a receptor, influencing the function of the protein.
Mitochondria
Organelles found in large numbers in most cells, involved in the production of energy through aerobic respiration.
Organelles found in large numbers in most cells, involved in the production of energy through aerobic respiration.
Nucleus
A membrane-bound organelle within eukaryotic cells that contains the genetic material (DNA).
A membrane-bound organelle within eukaryotic cells that contains the genetic material (DNA).
Receptor
Proteins on the cell surface or within cells that recognise and bind specific molecules (ligands), triggering a biological response.
Proteins on the cell surface or within cells that recognise and bind specific molecules (ligands), triggering a biological response.
Ribosome
A complex molecular machine found within all living cells that performs the synthesis of proteins according to the sequence of messenger RNA (mRNA).
A complex molecular machine found within all living cells that performs the synthesis of proteins according to the sequence of messenger RNA (mRNA).
Understanding these key terms and concepts is essential for navigating the world of peptide science and its applications in scientific research. This glossary is provided for general reference — all products on this site are sold strictly for laboratory research use.