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PROTEIN

Pronunciation (US): 

 Dictionary entry overview: What does protein mean? 

PROTEIN (noun)
  The noun PROTEIN has 1 sense:

1. 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 tissues; can be obtained from meat and eggs and milk and legumes

  Familiarity information: PROTEIN used as a noun is very rare.


 Dictionary entry details 


PROTEIN (noun)


Sense 1protein [BACK TO TOP]

Meaning:

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 tissues; can be obtained from meat and eggs and milk and legumes

Classified under:

Nouns denoting substances

Context example:

a diet high in protein

Hypernyms ("protein" is a kind of...):

macromolecule; supermolecule (any very large complex molecule; found only in plants and animals)

Meronyms (substance of "protein"):

amino acid; aminoalkanoic acid (organic compounds containing an amino group and a carboxylic acid group)

polypeptide (a peptide containing 10 to more than 100 amino acids)

Hyponyms (each of the following is a kind of "protein"):

capsid (the outer covering of protein surrounding the nucleic acid of a virus)

hatoglobin (a protein in plasma that binds free hemoglobin and removes it (as from wounds))

iodinated protein; iodoprotein (a protein that contains iodine)

nucleoprotein (any of several substances found in the nuclei of all living cells; consists of a protein bound to a nucleic acid)

opsin (retinal protein formed by the action of light on rhodopsin)

phosphoprotein (containing chemically bound phosphoric acid)

plasma protein (any of the proteins in blood plasma)

prostate specific antigen; PSA (a protein manufactured exclusively by the prostate gland; PSA is produced for the ejaculate where it liquifies the semen and allows sperm cells to swim freely; elevated levels of PSA in blood serum are associated with benign prostatic hyperplasia and prostate cancer)

proteome (the full complement of proteins produced by a particular genome)

simple protein (a protein that yields only amino acids when hydrolyzed)

cytokine (any of various proteins secreted by cells of the immune system that serve to regulate the immune system)

ferritin (a protein containing 20% iron that is found in the intestines and liver and spleen; it is one of the chief forms in which iron is stored in the body)

growth factor (a protein that is involved in cell differentiation and growth)

filaggrin (the main protein of the keratohyalin granules)

fibrin (a white insoluble fibrous protein formed by the action of thrombin on fibrinogen when blood clots; it forms a network that traps red cells and platelets)

gluten (a protein substance that remains when starch is removed from cereal grains; gives cohesiveness to dough)

actomyosin (a protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions)

aleurone (granular protein in outermost layer of endosperm of many seeds or cereal grains)

amyloid ((pathology) a waxy translucent complex protein resembling starch that results from degeneration of tissue)

apoenzyme (a protein that combines with a coenzyme to form an active enzyme)

compound protein; conjugated protein (a protein complex combining amino acids with other substances)

enzyme (any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions)

antibody (any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response)

Holonyms ("protein" is a substance of...):

milk (a white nutritious liquid secreted by mammals and used as food by human beings)

egg; eggs (oval reproductive body of a fowl (especially a hen) used as food)

legume (the seedpod of a leguminous plant (such as peas or beans or lentils))

meat (the flesh of animals (including fishes and birds and snails) used as food)


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