Peptide

Definition

Peptides are short chains of amino acids linked by peptide bonds. A polypeptide is a longer, continuous, unbranched peptide chain. Polypeptides that have a molecular mass of 10,000 Da or more are called proteins. Chains of fewer than twenty amino acids are called oligopeptides, and include dipeptides, tripeptides, and tetrapeptides.

Related concepts

1-Pyrroline-5-carboxylate dehydrogenase 3-Hydroxybutyryl-CoA dehydrogenase 3-hydroxy-2-methylbutyryl-CoA dehydrogenase 3-hydroxy-3-methylglutaryl-CoA lyase 3-hydroxyanthranilate oxidase 3-hydroxyisobutyrate dehydrogenase 3-hydroxyisobutyryl-CoA hydrolase 4-Hydroxyphenylpyruvate dioxygenase 5-MeO-DMT ADP-ribosylation AGG01 Acetyl-CoA Acetyl hexapeptide-3 Acetylation Activin and inhibin Acylation Adenosylhomocysteinase Adenylylation Adiponectin Adipose tissue Adrenal gland Adrenaline Adrenocorticotropic hormone Agmatinase Alanine Alanine transaminase Aldehyde dehydrogenase 4 family, member A1 Aldosterone Aliphatic compound Allysine Alpha-Ketoglutaric acid Alpha-ketoglutarate Amide Amide bond Amine Amino acid Amino acid synthesis Amino acids Aminocarboxymuconate-semialdehyde decarboxylase Aminomuconate-semialdehyde dehydrogenase Amylin Androstenedione Angiotensin Angiotensin IV Anterior pituitary Anti-Müllerian hormone Antibiotic Antimicrobial peptides Antioxidant Arginine Aromatic amino acid Aromatic short peptides Arylformamidase Asparaginase Asparagine Asparagine synthetase Aspartate Aspartate transaminase Aspartic acid Atrial natriuretic peptide Bacteriocin Beefy meaty peptide Beta-peptide Beta thymosin Betaine-homocysteine S-methyltransferase Biomimetic peptides Bis-peptide Blood pressure Brain natriuretic peptide 32 Branched-chain alpha-keto acid dehydrogenase complex Branched-chain amino acid Branched-chain amino acid aminotransferase Butyrylation C-terminus CLE peptide C terminus Calcitonin Calcitriol Carbamylation Carboxylation Cathelicidin Cecropin Chemical polarity Cholecystokinin Citrate Citrullination Collagen hybridizing peptide Corticotropin-like intermediate peptide Corticotropin-releasing hormone Cortisol Cortisone Creatine Creatine kinase Cyclic compound Cyclic peptide Cystathionine beta synthase Cystathionine gamma-lyase Cysteine D-amino acids D-cysteine desulfhydrase D-peptide Dalton (unit)Deamidation Deamination Defensin Dehydroamino acid Dehydroepiandrosterone Dehydroepiandrosterone sulfate Dephosphorylation Desmosine Detyrosination Digestion Dimethyltryptamine Dipeptide Diphthamide Disulfide bond Disulfide bridge Dopamine Drosomycin Duodenum Eledoisin Endocrine gland Endorphins Enkephalin Enoyl-CoA hydratase Enteroglucagon Enzyme Epidermal growth factor Erythropoietin Essential amino acid Estradiol Estrogen Fatty acid Flavin group Fmoc Follicle-stimulating hormone Formiminotransferase cyclodeaminase Formylation Fumarate Fumarylacetoacetate hydrolase Fungi Gamma-glutamyl transpeptidase Gamma-glutamylcysteine synthetase Gastric inhibitory polypeptide Gastrin Genetic code Ghrelin Glucagon Glucagon-like peptide-1 Glucogenic amino acid Glucogenic amino acids Glutamate Glutamate dehydrogenase Glutamic acid Glutaminase Glutamine Glutamine synthetase Glutaryl-CoA dehydrogenase Glutarylation Glutathione Glutathione synthetase Glycation Glycine Glycophosphatidylinositol Glycosylation Gonadotropin-releasing hormone Gonadotropin surge-attenuating factor Green Fluorescent Protein Growth hormone Growth hormone releasing hormone Growth hormone–releasing hormone Guanidinoacetate N-methyltransferase HMG-CoA reductase Heart Histidine Histidine ammonia-lyase Homogentisate 1,2-dioxygenase Hormone Human chorionic gonadotropin Human placental lactogen Human skeleton Hydroxylation Hydroxylysine Hypothalamic–pituitary hormone Hypothalamic–pituitary–adrenal axis Hypothalamic–pituitary–gonadal axis Hypothalamic–pituitary–thyroid axis Hypothalamus IUPAC books IUPAC numerical multiplier Ileum Imine Imino acid Indoleamine 2,3-dioxygenase Insulin Insulin-like growth factor Insulin-like growth factor 1 Insulin-like growth factor 2 International Union of Pure and Applied Chemistry Isoleucine Isovaleryl coenzyme A dehydrogenase Jelleine Journal of Peptide Science Kaede (protein)Kassinin Ketogenic amino acid Ketogenic amino acids Kidney Kynureninase L-threonine dehydrogenase Lactotripeptides Lactylation Leptin Leucine Leucine 2,3-aminomutase Lipid Lipopeptide Lipotropin Liver Luteinizing hormone Lysine Lysine malonylation Lysine methylmalonylation Lysine tyrosylquinone Magainin Melanin Melanin concentrating hormone Melanocyte-stimulating hormone Melatonin Metabolism Methionine Methionine adenosyltransferase Methionine synthase Methylation Methylcrotonyl-CoA carboxylase Methylglutaconyl-CoA hydratase Methylmalonate-semialdehyde dehydrogenase (acylating)Methylmalonyl-CoA mutase Methylmalonyl CoA epimerase Microcin Micropeptide Modularity (biology)Molecular mass Motilin Myristoylation N-terminus N terminus Natriuretic peptide Neurokinin A Neurokinin B Neuropeptide Neuropeptide Y Neuropeptidergic Neurotrophic Non-proteinogenic amino acids Nonribosomal peptide Norepinephrine N–O acyl shift O-GlcNAc O-glycosylation O-methylation Oligopeptide Opioid peptide Opioidergic Ornithine aminotransferase Ornithine decarboxylase Osteocalcin Ovary Oxaloacetic acid Oxazoles Oxytocin PYCR1 Palmitoyl pentapeptide-4 Palmitoylation Pancreas Pancreatic hormone Pancreatic polypeptide Parathyroid gland Parathyroid hormone Pepducin Peptide PHI Peptide YY Peptide amphiphile Peptide bond Peptide hormone Peptide hormones Peptide spectral library Peptide synthesis Peptide therapeutics Peptides (journal)Peptidomimetic Peptoid Phenylalanine Phenylalanine hydroxylase Phosphorylation Pineal gland Pituitary adenylate cyclase activating peptide Placenta Plant Platypus venom Polyglutamylation Polyglycylation Polyketide Porphyrin Post-translational modification Posterior pituitary Posttranslational modification Prenylation Prodynorphin Progesterone Prolactin Proline Proline oxidase Proopiomelanocortin Propeptide Propionyl-CoA Propionyl-CoA carboxylase Propionylation Prostaglandin Protein Protein acetylation Protein biosynthesis Protein metabolism Protein primary structure Protein tag Proteinogenic amino acid Proteolysis Proteose Pyrroline-5-carboxylate reductase Pyrrolysine Pyruvate RGD motif Racemization Relaxin Renin Replikins Residue (chemistry)Resin Resistin Ribosome Royal jelly SUMO protein Saccharopine dehydrogenase Secondary amino acid Secretin Secretin family Selenocysteine Serine Serine dehydratase Serine hydroxymethyltransferase Somatostatin Spinorphin Splicing (genetics)Stomach Substance P Succinyl-CoA Succinylation Sulfilimine bond Sulfonation Tachykinin peptides Testicle Testosterone Tetrapeptide Thiazoles Threonine Threonine aldolase Thymopoietin Thymosin Thymosin α1 Thymulin Thymus Thyroid Thyroid-stimulating hormone Thyroid hormones Thyrotropin-releasing hormone Thyroxine Topaquinone Transglutamination Translation (biology)Triiodothyronine Tripeptide Tryptophan Tryptophan 2,3-dioxygenase Tryptophan tryptophylquinone Tyrosinase Tyrosine Tyrosine aminotransferase Tyrosine sulfation Ubiquitination Unicellular organism Urocanase Valine Vasoactive intestinal peptide Vasopressin Ventricular natriuretic peptide Α-ketoisocaproate dioxygenase

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