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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

thing go
a separate and self-contained entity

unit, building block go
a single undivided natural thing occurring in the composition of something else

molecule go
(physics and chemistry) the simplest structural unit of an element or compound

macromolecule, supermolecule go
any very large complex molecule

protein
any of a large group of nitrogenous organic compounds that are essential constituents of living cells

noun.substance

24 Subcategories

capsid go
the outer covering of protein surrounding the nucleic acid of a virus
gluten go
a protein substance that remains when starch is removed from cereal grains
recombinant protein go
a protein derived from recombinant DNA
actomyosin go
a protein complex in muscle fibers
aleurone go
granular protein in outermost layer of endosperm of many seeds or cereal grains
amyloid go
(pathology) a waxy translucent complex protein resembling starch that results from degeneration of tissue
apoenzyme go
a protein that combines with a coenzyme to form an active enzyme
conjugated protein, compound protein go
a protein complex combining amino acids with other substances
enzyme go
any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions
fibrin go
a white insoluble fibrous protein formed by the action of thrombin on fibrinogen when blood clots
filaggrin go
the main protein of the keratohyalin granules
growth factor go
a protein that is involved in cell differentiation and growth
haptoglobin go
a protein in plasma that binds free hemoglobin and removes it (as from wounds)
iodoprotein, iodinated protein go
a protein that contains iodine
nucleoprotein go
any of several substances found in the nuclei of all living cells
opsin go
retinal protein formed by the action of light on rhodopsin
phosphoprotein go
containing chemically bound phosphoric acid
plasma protein go
any of the proteins in blood plasma
prostate specific antigen, PSA go
a protein manufactured exclusively by the prostate gland
proteome go
the full complement of proteins produced by a particular genome
simple protein go
a protein that yields only amino acids when hydrolyzed
cytokine go
any of various protein molecules secreted by cells of the immune system that serve to regulate the immune system
ferritin go
a protein containing 20% iron that is found in the intestines and liver and spleen
antibody go
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