One of the three nutrients used as energy sources (calories) by the body. Proteins are essential components of the muscle, skin, and bones. Proteins and carbohydrates each provide 4 calories of energy per gram, whereas fats provide 9 calories per gram.

See: Acute-phase protein.

See C-reactive protein.

See: Proteolipid protein.

A molecule made up of amino acids. Proteins are needed for the body to function properly. They are the basis of body structures, such as skin and hair, and of other substances such as enzymes, cytokin [..]

Organic substances primarily composed of carbon, hydrogen, nitrogen, and some other minor elements which are arranged in about 20 different compounds known as amino acids. The various amino acids foun [..]

(pro-teen) [Gk. proteios, primary] A three-dimensional biological polymer constructed from a set of 20 different monomers called amino acids.

A complex polymer made by linking together amino acid molecules. Proteins sometimes contain non-amino acid components such as metal ions or porphyrin rings embedded within.

Substance made up of amino acids that contains approximately 16% nitrogen (based on molecular weight).

1 a substance in food such as meat, eggs, and milk that people need in order to grow and be healthySynonyms and related words Substances and chemicals in food and drink:additive, albumin, ascorbi [..]

Proteins are large molecules that form the structural part of most organs and make up enzymes and hormones that regulate body functions.

A compound of organic acids; may contain carbon, hydrogen, nitrogen, or oxygen

1844, from French protéine, coined 1838 by Dutch chemist Gerhard Johan Mulder (1802-1880), perhaps on suggestion of Berzelius, from Greek proteios "the first quality," from protos "firs [..]

one of many complex compounds, made of chains of amino acids, that make up the majority of all cellular structures and are necessary for biological processes.

Proteins are an important class of molecules found in all living cells. A protein is composed of one or more long chains of amino acids, the sequence of which corresponds to the DNA sequence of the gene that encodes it. Proteins play a variety of roles in the cell, including structural (cytoskeleton), mechanical (muscle), biochemical (enzymes), and [..]

A polymer of amino acids linked via peptide bonds and which may be composed of two or more polypeptide chains. 15 Animation

Proteins are large organic compounds made of amino acids. They are essential to all living cells and organisms.

A polymer made up of amino acids and found in all living cells. Proteins that act as catalysts

extremely complex molecules of carbon, hydrogen, nitrogen, and other elements joined in chains of amino acids (peptides). Protein constitutes the bulk of living matter, gives it structure, and has something to do in almost every aspect of cell operation.

any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of [..]

The main building block of our cells. Each one has a specific function.

A connected series of amino acids that may have up to 20 different kinds of side chains; can exist in long fibrous or globular forms; component of macromolecules; forms enzymes and macromolecules acti [..]

A polypeptide or molecule made up of polypeptides. Examples: Albumin, hemoglobin, keratin.

protein (pop)

Protein is one of the basic components of food and makes all life possible. Amino acids are the building blocks of proteins. All of the antibodies and enzymes, and many of the hormones in the body, ar [..]

Protein can be found in both animal and vegetable sources, and provides the body with energy while performing a large number of other functions.

Large molecules composed of long chains of amino acids (see also amino acids). Essential for growth and repair, but also a source of energy with one gram of protein supplying four Calories when oxidised. Excess protein (amino acids) cannot be stored as such, therefore daily intake required.

A molecule made up of a sequence of amino acids (there are 23 different amino acids). Many of the important molecules in a living thing -- for example, all enzymes -- are proteins.

Proteins are macromolecules made from twenty different types of amino acids. Proteins constitute the active component of cells . Proteins function as enzyme in metabolism, transporters and receptors in cell membranes, hormones, antibodies, and help read, translate, and replicate the genetic information. 

While the genetic sequence provides the basic informational foundation of the cell, it is the network of protein- gene, protein- protein

level. Therefore, they provide an indirect and incomplete picture of cellular function

a piece of cellular machinery. Each cell is made up of proteins which are created by ribosomes from the instruction set in an organism’s genome. Proteins are made up of a sequence of amino acids

a basic constituent of all living cells. A biological macromolecule is composed of one or more amino acid chains linked by peptide bonds.

A long string of amino acids. The basic building material of organisms. Compare peptide.

A type of molecule composed of complex strings of amino acids (protein building blocks).

biochemistry - important class of large biological molecules that usually contain a long and complexly folded structural unit (made from fatty acids or polysaccharides) with attached peptide side chains formed from amino acids

A type of polymer comprising a large number of monomers – a range of up to 20 amino acids – all connected by identical peptide links (covalent C-N bonds). Proteins are of three main types: globular proteins which are water-soluble (enzymes, antibodies, haemoglobin, insulin); membrane proteins which are particularly amphiphilic; fibrous proteins (ke [..]

One or several long biological polypeptide chains with specific amino-acid sequences. The polypeptide chains in proteins are usually folded into well defined 3-dimensional shapes, and the separate chains in a protein with more than one polypeptide are usually packed together with well-defined orientations. Proteins are classified broadly into globu [..]

Any of the ‘amino acids’ present in all living matter that are an essential food item.

Biological molecule consisting of linear chains of amino acids. Proteins are the principal products of genetic information and they do the bulk of work required for life. They perform a vast array of functions within living organisms, including providing cells with structure, mediating biochemical reactions, transmitting biological signals, and tra [..]

A molecule made up of a sequence of amino acids

(French : protéine de structure) A protein that serves a structural role in the body such as collagen.

a biomolecule that contains carbon, hydrogen, oxygen, and nitrogen; needed by the body for growth and repair

A molecule made up of amino acids that are needed for the body to function properly. Proteins are the basis of body structures such as skin and hair and of substances such as enzymes, cytokines, and antibodies.

A large molecule, made of amino acids, that is encoded by a gene or genes and that performs a specialised job in the cell.

Proteins are large molecules required for the structure, function, and regulation of the body's cells, tissues, and organs. Each protein has unique functions. Proteins are essential components of [..]

A molecule composed of one or more chains of amino acids in a specific order. Proteins are required for the structure, function, and regulation of the body's cells, tissues, and organs, and each [..]

Required for the structure, function and regulation of body cells, tissues and organs. A large molecule is made up of one or more chains of amino acids in a specific order. The order is determined by [..]

any of a group of large molecules that contain primarily carbon, hydrogen, oxygen, and nitrogen. Proteins are essential to the structure and function of all living cells. Examples of proteins in the b [..]

(PRO-teen) 1. One of the three main nutrients in food. Foods that provide protein include meat, poultry, fish, cheese, milk, dairy products, eggs, and dried beans. 2. Proteins are also used in the body for cell structure, hormones such as insulin, and other functions.

Complex, nitrogen-containing substance that is found in food and is essential for the functioning of the human body. Protein molecules consist of long chains of building blocks called amino acids. Some of these amino acids can be manufactured in the human body. Others must be supplied by the diet. The body breaks down food proteins into their amino [..]

A large molecule composed of one or more chains of amino acids. An essential component of the human diet. In addition to providing amino acids needed for the assembly of proteins in our bodies, a gram [..]

Used in professional kitchens as a general term to describe the meat, poultry, or fish in a presented dish.

(n) any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repai [..]

An organic compound composed primarily of amino acids.

One of the three major nutrients (along with carbohydrates and fats). It is used by the body for building and repairing tissues. Protein is derived primarily from animal sources but can be obtained fr [..]

Made up of amino acids, protein is essential for the growth and maintenance of body tissue, blood cells, hormones and enzymes. The best source of protein is fish, meat, poultry, milk products, and eggs.

The loss of protein in the intestine.

A large complex molecule made up of one or more chains of amino acids. Proteins are needed by the body to grow and function properly. 

Definition: (PRO-teen) A molecule made up of amino acids that are needed for the body to function properly. Proteins are the basis of body structures such as skin and hair and of substances such as en [..]

Protein builds, maintains, and replaces the tissues in your body. (Not the tissues you blow your nose in! We mean the stuff your body's made up of.) Your muscles, your organs, and your immune sys [..]

Protein is a nutrient important for the repair of tissues in the body. For adults, the recommended dietary intake for protein is about 0.75 g/kg body weight per day. Excess protein cannot be stored in [..]

 in the diet it is required for tissue growth and repair. Composed of structural units called amino acids. Protein is not a significant energy source unless not enough calories and carbohydrate are consumed. One gram of protein equals four calories.

A linear polymer of amino acids linked together in a specific sequence and usually containing more than 50 residues. Proteins form the key structural elements in cells and participate in nearly all ce [..]

Definition: Proteins are substances built up from amino acids. The construction of the individual proteins (the amino acid sequence) is stored in the DNA and is retrieved from there for the production. Proteins serve as a support structure and, in the form of hormones, as messenger substances. As enzymes they facilitate biochemical processes or fun [..]

A molecule composed of a long chain of amino acids. Proteins are the principal constituents of cellular material and serve as enzymes, hormones, structural elements, and antibodies. The molar mass is [..]

Illustrated Glossary of Organic Chemistry Protein: A peptide composed of many amino acids. Myoglobin, a protein containing 154 amino acid residues, used to bind oxygen in muscle cells. Structure from [..]

A molecule comprised of long chains of amino acid molecules. Proteins, which include enzymes, are polypeptides.

a complex organic molecule composed of amino acids in a specific order. The order is determined by the sequence of nucleic acids in a gene coding for the protein. Proteins are required for the structu [..]

Activins are produced in the pituitary, Gonads, and other Tissues. By acting locally, they stimulate pituitary FSH Secretion and have diverse effects on Cell Differentiation and Embryonic Development. [..]

Proteins coded by the retroviral gag Gene. The products are usually synthesized as protein precursors or Polyproteins, which are then cleaved by viral Proteases to yield the final products. Many of th [..]

Polyprotein products of a fused portion of retroviral mRNA containing the gag and pol Genes. The polyprotein is synthesized only five percent of the Time since pol is out of frame with gag, and is gen [..]

Sulfur-Sulfur Bond Isomerases that catalyze the rearrangement of disulfide bonds within Proteins during folding. Specific protein disulfide-isomerase Isoenzymes also occur as subunits of Procollagen-P [..]

Regulatory Proteins that act as molecular switches. They control a wide range of Biological Processes including: receptor signaling, intracellular Signal Transduction pathways, and protein synthesis. [..]

Proteins that contain an Iron-porphyrin, or Heme, prosthetic group resembling that of Hemoglobin. (From Lehninger, Principles of Biochemistry, 1982, p480)

A Transferase that catalyzes the addition of aliphatic, aromatic, or heterocyclic Free Radicals as well as Epoxides and arene Oxides to Glutathione. Addition takes place at the Sulfur. It also catalyz [..]

A Guanine Nucleotide Exchange Factor that is expressed primarily in neuronal Tissue and may be specific for the Ha-ras homolog of the ras Proteins.

Glycoprotein from Sendai, para-Influenza, Newcastle Disease, and other Viruses that participates in binding the Virus to Cell-surface receptors. The HN protein possesses both Hemagglutinin and Neurami [..]

HuD paraneoplastic Encephalomyelitis Antigen is an RNA-Binding Protein. It binds AU-rich sequences in the 3' Untranslated Regions of mRNAs for Proto-Oncogene Proteins c-fos; Cyclin-Dependent Kina [..]

A multifunctional galactin initially discovered as a Macrophage Antigen that binds to Immunoglobulin E, and as 29-35-kDa lectin that binds Laminin. It is involved in a variety of biological events inc [..]

A product of the p16 Tumor Suppressor Gene (Genes, p16). It is also called INK4 or INK4A because it is the prototype member of the INK4 Cyclin-Dependent Kinase Inhibitors. This protein is produced fro [..]

A group of Enzymes that catalyzes the Hydrolysis of terminal, non-reducing beta-D-Galactose residues in beta-Galactosides. Deficiency of beta-Galactosidase A1 may cause Gangliosidosis, GM1.

A Ureahydrolase that catalyzes the Hydrolysis of Arginine or canavanine to yield L-Ornithine (Ornithine) and Urea. Deficiency of this enzyme causes Hyperargininemia. EC 3.5.3.1.

Proteins which are found in Membranes including cellular and Intracellular Membranes. They consist of two types, peripheral and integral Proteins. They include most Membrane-associated Enzymes, antige [..]

The major protein constituents of Milk are Caseins and whey Proteins such as LACTALBUMIN and Lactoglobulins. Immunoglobulins occur in high concentrations in Colostrum and in relatively lower concentra [..]

Proteins encoded by the Mitochondrial Genome or Proteins encoded by the nuclear Genome that are imported to and resident in the Mitochondria.

A non-Heme Iron-Sulfur protein isolated from Clostridium pasteurianum and other Bacteria. It is a component of Nitrogenase, which is active in Nitrogen Fixation, and consists of two subunits with Mole [..]

A surface protein found on Plasmodium species which induces a T-Cell response. The Antigen is polymorphic, sharing Amino Acid Sequence Homology among Plasmodium falciparum; Plasmodium chabaudi; Plasmo [..]

The protein constituents of Muscle, the major ones being Actins and Myosins. More than a dozen accessory Proteins exist including Troponin; Tropomyosin; and Dystrophin.

Proteins produced from Genes that have acquired Mutations.

A myelin protein that is the major component of the organic solvent extractable Lipoprotein complexes of whole Brain. It has been the subject of much study because of its unusual physical properties. [..]

A myogenic regulatory factor that controls Myogenesis. Though it is not clear how its function differs from the other Myogenic Regulatory Factors, MyoD appears to be related to fusion and terminal dif [..]

ATPases that are members of the AAA protein superFamily (ATPase Family Associated with various cellular Activities). The NSFs functions, acting in conjunction with Soluble NSF Attachment Proteins (i.e [..]

A heterotrimeric DNA-binding protein that binds to CCAAT motifs in the promoters of eukaryotic Genes. It is composed of three subunits: A, B and C.

SNARE binding Proteins that facilitate the ATP Hydrolysis-driven dissociation of the SNARE complex. They are required for the binding of N-Ethylmaleimide-Sensitive Protein (NSF) to the SNARE complex w [..]

A broad category of Nuclear Proteins that are components of or participate in the formation of the Nuclear Matrix.

An organic cation transporter found in Kidney. It is localized to the basal lateral Membrane and is likely to be involved in the renal Secretion of organic Cations.

Proteins, usually projecting from the Cilia of Olfactory Receptor Neurons, that specifically bind odorant molecules and trigger responses in the Neurons. The large number of different odorant receptor [..]

Proteins coded by Oncogenes. They include Proteins resulting from the fusion of an Oncogene and another Gene (Oncogene Proteins, Fusion).

A protein that accounts for more than half of the Peripheral Nervous System myelin protein. The extraCellular domain of this protein is believed to engage in Adhesive interactions and thus hold the my [..]

A subtype of GPI-Anchored Folate Receptors that is expressed in Placenta and hematopoietic Cells.

Retroviral Proteins coded by the pol Gene. They are usually synthesized as a protein precursor (Polyproteins) and later cleaved into final products that include Reverse Transcriptase, endonuclease/Int [..]

A Glycoprotein migrating as alpha 1-globulin, Molecular Weight 70,000 to 120,000. The protein, which is present in increased amounts in the Plasma during Pregnancy, binds mainly Progesterone, with oth [..]

Proteins found in Ribosomes. They are believed to have a catalytic function in reconstituting biologically active Ribosomal Subunits.

A subtype of Retinoic Acid Receptors that are specific for 9-cis-Retinoic Acid which function as nuclear Transcription Factors that regulate multiple signalling pathways.

A Membrane Protein homologous to the ERM (Ezrin-Radixin-Moesin) Family of Cytoskeleton-associated Proteins which regulate physical properties of Membranes. Alterations in Neurofibromin 2 are the cause [..]

A toxin produced by certain pathogenic strains of Escherichia coli such as Escherichia coli O157. It is closely related to Shiga Toxin produced by Shigella dysenteriae.

A subfamily of Q-SNARE Proteins which occupy the same position as syntaxin 1A in the SNARE complex and which also are most similar to syntaxin 1A in their Amino Acid Sequence. This subfamily is also k [..]

Microtubule-Associated Proteins that are mainly expressed in Neurons. Tau Proteins constitute several Isoforms and play an important Role in the assembly of Tubulin monomers into Microtubules and in m [..]

Proteins encoded by a Viral Genome that are produced in the organisms they infect, but not packaged into the Virus Particles. Some of these Proteins may play Roles within the infected Cell during Viru [..]

Trans-acting protein that combines with host factors to induce immediate early Gene transcription in Herpes Simplex Virus.

Transforming Proteins coded by rel Oncogenes. The v-rel protein competes with rel-related Proteins and probably transforms Cells by acting as a dominant negative version of c-rel. This results in the [..]

A Wnt protein subtype that plays a Role in Cell-Cell signaling during Embryonic Development and the Morphogenesis of the developing Neural Tube. Defects in Wnt3 protein are associated with autosomal r [..]

A Wnt protein subtype that plays a Role in Cell-Cell signaling during Embryonic Development and the Morphogenesis of the developing Neural Tube.

Isoforms encoded by the WT1 Wilms Tumor Suppressor Gene (Genes, Wilms Tumor) and produced by Alternative Splicings. They are Zinc Finger-containing Transcription Factors involved in both Transactivati [..]

Transforming protein coded by jun Oncogenes (Genes, jun). This is a gag-onc fusion protein of about 65 kDa derived from Avian Sarcoma Virus. v-jun lacks a negative regulatory domain that regulates tra [..]

Proteins that are secreted into the Blood in increased or decreased quantities by Hepatocytes in response to Trauma, Inflammation, or Disease. These Proteins can serve as inhibitors or mediators of th [..]

Consists of a polypeptide chain and 4'-phosphopantetheine linked to a Serine residue by a phosphodiester bond. Acyl groups are bound as thiol esters to the pantothenyl group. Acyl carrier protein [..]

An 86-amino acid polypeptide, found in central and peripheral Tissues, that displaces Diazepam from the Benzodiazepine recognition site on the gamma-Aminobutyric Acid Receptor (Receptors, GABA). It al [..]

Carrier Proteins produced in the Sertoli Cells of the Testis, secreted into the Seminiferous Tubules, and transported via the efferent ducts to the Epididymis. They participate in the transport of And [..]

A large and highly glycosylated protein constituent of Lipoprotein (a). It has very little affinity for Lipids but Forms disulfide-linkage to Apolipoprotein B-100. Apoprotein(a) has Serine Proteinase [..]

ADP-Ribosylation Factor 1 is involved in regulating intracellular transport by modulating the interaction of Coat Proteins with Organelle Membranes in the early Secretory Pathway. It is a component of [..]

Proteins found in any species of bacterium.

A 235-kDa cytoplasmic protein that is also found in Platelets. It has been localized to regions of Cell-substrate adhesion. It binds to Integrins; Vinculin; and Actins and appears to participate in ge [..]

A ubiquitous Membrane transport protein found in the Plasma Membrane of diverse Cell types and Tissues, and in nuclear, mitochondrial, and Golgi Membranes. It is the major integral transMembrane Prote [..]

A member of the Bcl-2 protein Family and homologous partner of C-BCL-2 PROTO-Oncogene Protein. It regulates the release of Cytochrome c and Apoptosis Inducing Factor from the Mitochondria. Several Iso [..]

An abnormal protein with unusual thermosolubility characteristics that is found in the urine of Patients with Multiple Myeloma.

Peptides generated from Amyloid BETA-Peptides PRECURSOR. An Amyloid fibrillar form of these Peptides is the major component of Amyloid Plaques found in individuals with Alzheimer's Disease and in [..]

A Family of F-box domain Proteins that contain sequences that are homologous to the beta subunit of Transducin (BETA-Transducin). They play an important Role in the Protein Degradation pathway by beco [..]

Vitamin K-dependent Calcium-binding protein synthesized by Osteoblasts and found primarily in BONES. Serum osteocalcin measurements provide a noninvasive specific marker of bone Metabolism. The protei [..]

One of the Virulence Factors produced by virulent Bordetella organisms. It is a bifunctional protein with both Adenylate Cyclase and hemolysin components.

A Protein-Serine-Threonine Kinase that is activated by Phosphorylation in response to Growth FACTORS or Insulin. It plays a major Role in Cell Metabolism, Growth, and Survival as a core component of S [..]

A Heat-stable, low-molecular-weight activator protein found mainly in the Brain and Heart. The binding of Calcium Ions to this protein allows this protein to bind to cyclic nucleotide Phosphodiesteras [..]

A transcriptional regulator in prokaryotes which, when activated by binding Cyclic AMP, acts at several promoters. Cyclic AMP Receptor protein was originally identified as a catabolite Gene activator [..]

A Chloride Channel that regulates Secretion in many exocrine Tissues. Abnormalities in the CFTR Gene have been shown to cause Cystic Fibrosis. (Hum Genet 1994;93(4):364-8)

Serum Glycoproteins participating in the host defense mechanism of Complement Activation that creates the Complement Membrane Attack Complex. Included are Glycoproteins in the various pathways of Comp [..]

A Serum protein that regulates the Classical Complement Activation Pathway. It binds as a cofactor to Complement Factor I which then hydrolyzes the Complement C4b in the Classical Pathway C3 Convertas [..]

A Plasma protein that circulates in increased amounts during Inflammation and after Tissue damage.

Cellular DNA-Binding Proteins encoded by the rel Gene (Genes, rel). They are expressed predominately in hematopoietic Cells and may play a Role in Lymphocyte differentiation. Rel frequently combines w [..]

A Family of peptidyl-prolyl cis-trans Isomerases that bind to Cyclosporins and regulate the Immune System. EC 5.2.1.-

An enzyme that catalyzes the desaturation (aromatization) of the ring A of C19 Androgens and converts them to C18 Estrogens. In this process, the 19-methyl is removed. This enzyme is Membrane-bound, l [..]

Proteins obtained from Foods. They are the main source of the Essential Amino Acids.

Proteins which are present in or isolated from vegetables or vegetable products used as Food. The concept is distinguished from Plant Proteins which refers to non-Dietary Proteins from Plants.

Glycosylated Proteins which are part of the salivary glue that Drosophila Larvae secrete as a means of fixing themselves to an external substrate for the duration of the pre-pupal and pupal period.

A Guanine Nucleotide Exchange Factor from Drosophila. Sevenless refers to genetic Mutations in Drosophila that cause loss of the R7 photoreceptor which is required to see UV Light.

A Family of RNA-Binding Proteins that are homologues of ELAV protein, Drosophila. They were initially identified in Humans as the targets of Autoantibodies in Patients with PARANEOPLASTIC Encephalomye [..]

A Family of Proteins that share the F-Box Motif and are involved in protein-protein interactions. They play an important Role in process of protein ubiquition by associating with a variety of substrat [..]

A Family of immunophilin Proteins that bind to the immunosuppressive Drugs Tacrolimus (also known as FK506) and Sirolimus. EC 5.2.1.-

A Serine Threonine Kinase that controls a wide range of Growth-related cellular processes. The protein is referred to as the target of Rapamycin due to the discovery that Tacrolimus (commonly known as [..]

A large molecule made up of a series of peptides—one or more long chains of amino acids. The specific sequence of the amino acids determines the protein’s structure and function. Proteins are essential to all living organisms. See Related Term(s): Amino Acids

A protein is a molecule made up of a sequence of amino acids. It is generally assumed that each protein is encoded by a single gene. Different proteins have different numbers of amino acids, but an av [..]

Nutrients made up of carbon, hydrogen, oxygen and nitrogen, forming amino acids that help build the basic molecular structure of hair, skin, ligaments and muscles, as well as being essential to the pr [..]

One of a group of high-molecular weight, nitrogen-containing organic compounds of complex shape and composition.

Complex molecules made of amino acids that include many substances (such as enzymes, hormones, and antibodies) necessary for the proper functioning of an organism.

Generic term for the protein component of a dish—meat, fish, poultry, or even “meat substitute” like tofu or seitan. Does not refer to eggs.

Any of a class of nitrogenous organic compounds that consist of large molecules composed of one or more long chains of amino acids.

Protein is an essential nutrient. Proteins are composed of long chains of various kinds of amino acids. Animals meet their protein needs by breaking down plant and microbial protein (formed in the rumen) and reassembling them as animal proteins.

Any complex organic compound containing nitrogen.

A nutrient that is essential to the cat's health. Cats cannot survive on vegetable proteins alone and must have meat in their diet. Cats require higher levels of protein than dogs and it is not s [..]

Any one of a class of naturally occurring compounds containing carbon, hydrogen, oxygen, nitrogen, often sulfur, phosphorus, occasionally iron and a few other elements. They are essentially very compl [..]

A molecule composed of one or more chains of amino acids in a specific order. Proteins are required for the structure, function and regulation of an organism's cells and tissues, and each protein has a unique function.

a type of organic compound that is one of the major components of cells and tissues.

are large organic compounds made of amino acids arranged in a linear chain and joined together by peptide bonds between the carboxyl and amino groups of adjacent amino acid residues.

A large molecule composed of one or more chains of up to several hundred amino acids in a specific order held together by peptide bonds. The order is determined by the base sequence of nucleotides in the gene that codes for the protein. Proteins are required for the structure, function and regulation of the body’s cells, tissues and organs, and eac [..]

any molecule made up of amino acids; proteins form much of an organism's structure and are responsible for many of its functions

A type of molecule composed of complex strings of amino acids (protein building blocks).

Proteins do the work in cells. They can be part of structures (such as cell walls, organelles, etc), regulate reactions that take place in the cell or they can serve as enzymes, which speed-up reactio [..]

a complex group of organic molecules that are the basic components of all living cells

A macromolecule made up on one or more polypeptide chains.

A molecule made up of amino acids that are needed for the body to function properly. Proteins are the basis of body structures such as skin and hair and of substances such as enzymes, cytokines and an [..]

Components of cells and viruses that play structural and functional roles in cells.

The building block for lots of parts of our bodies, for example muscles are made of proteins.

 Matter found in living things with many roles, including helping to control how our cells work and fighting infections

A complex natural substance composed of amino acids useful in cheesemaking to form the web that holds the nutrients in the cheese and as a food source. (See Casein

A long-chain molecule consisting of amino acids. The function of a protein is determined by the sequence of amino acids. This sequence of amino acids is determined by the sequence of DNA bases found in the gene coding for that protein.

A molecule made up of amino acids that are needed for the body to function properly. Proteins are the basis of body structures such as skin and hair and of substances such as enzymes, cytokines, and antibodies. (Definition from: Physician Data Query via Unified Medical Language System

Large biological molecules, or macromolecules, consisting of one or more long chains of amino acids. Proteins differ from one another primarily in their sequence of amino acids, which is dictated by t [..]

A complex biological molecule composed of a chain of units called amino acids. Proteins have many different functions: structure(collagen); movement (actin and myosin); catalysis (enzymes); transport [..]

An organic molecule that consists of amino acids joined together in a specific linear sequence. Proteins play a central role in biological processes and form the basis of living tissues. They have distinct and varied three-dimensional structures. Enzymes, antibodies and haemoglobin are examples of proteins.

Complex molecule containing carbon, hydrogen, oxygen and nitrogen; a major constituent of meat. Worms are approximately 60% protein.

A protein is a molecule which is a long chain (a polymer

Any of numerous naturally occurring extremely complex substances that consist of amino-acid residues joined by peptide bonds, contain the elements carbon, hydrogen, nitrogen, oxygen, usually sulfur, and occasionally other elements (as phosphorus or iron), and include many essential biological compounds (as enzymes, hormones, or immunoglobulins).

A linear biomacromolecule synthesized by ribosomes and consisting of a chain of amino acids in peptide linkage. Intracellular proteins have structural, regulatory, and catalytic functions; proteins secreted by cells have, in addition, intercellular signaling functions.

Organic substances primarily composed of carbon, hydrogen, nitrogen, and some other minor elements which are arranged in about 20 different compounds known as amino acids. The various amino acids found in a protein are linked together by peptide bonds.

A naturally occurring complex organic substance present in relatively high amounts in meats, fish, eggs, cheese, legumes. Made of carbon, hydrogen, oxygen, and nitrogen, and sometimes sulfur and phosp [..]

Macromolecule (polymer) consisting of amino acids, which is an essential element for growth, repair, function and structure in all living cells. UV absorbs a maximum of 289 nm proteins.

A large molecule composed of one or more chains of amino acids in a specific order; the order is determined by the base sequence of nucleotides in the gene that codes for the protein. Proteins are req [..]

a substance found in foods that the bodies of people and animals need to grow. pulp

A polymer of amino acids. See also the entry at NHGRI's Talking Glossary of Genetic Terms.

Comprised of amino acids, proteins are an essential nutrient group; in baking flour, “high protein” refers to the “strength” of the flour to produce gluten, comprised of two amino acids, glutenin and [..]

is a major component of food. Good sources of protein include lean meat, fish, dairy products, eggs and legumes.  Proteins are made up of smaller units called amino acids. There are 23 amino acids, ei [..]

Macromolecules consisting of long sequences of amino acids. Protein is three-fourths of the dry weight of most cell matter and is involved in structures, hormones, enzymes, muscle contraction, immunol [..]

protein

An essential part of food which the body needs to repair itself and build muscle.

One of the three types of nutrients that provides calories to the body. Protein is an essential nutrient that helps build many parts of the body, including muscle, bone, skin, and blood. Protein provides 4 calories per gram and is found in foods like meat, fish, poultry, eggs, dairy products, beans, nuts, and tofu.