GO term | GO name | GO namespace | GO def |
GO:0046883 | regulation of hormone secretion | biological_process | Any process that modulates the frequency, rate or extent of the regulated release of a hormone from a cell. [GOC:ai] |
GO:0046395 | carboxylic acid catabolic process | biological_process | The chemical reactions and pathways resulting in the breakdown of carboxylic acids, any organic acid containing one or more carboxyl (-COOH) groups. [ISBN:0198506732] |
GO:0016595 | glutamate binding | molecular_function | Binding to glutamate, the anion of 2-aminopentanedioic acid. [GOC:ai] |
GO:0032880 | regulation of protein localization | biological_process | Any process that modulates the frequency, rate or extent of any process in which a protein is transported to, or maintained in, a specific location. [GOC:dph, GOC:mah, GOC:tb] |
GO:0043204 | perikaryon | cellular_component | The portion of the cell soma (neuronal cell body) that excludes the nucleus. [GOC:jl] |
GO:0046394 | carboxylic acid biosynthetic process | biological_process | The chemical reactions and pathways resulting in the formation of carboxylic acids, any organic acid containing one or more carboxyl (-COOH) groups. [ISBN:0198506732] |
GO:0005829 | cytosol | cellular_component | The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. [GOC:hjd, GOC:jl] |
GO:0065007 | biological regulation | biological_process | Any process that modulates a measurable attribute of any biological process, quality or function. [GOC:dph, GOC:isa_complete, GOC:mah, GOC:pr, GOC:vw] |
GO:0016747 | acyltransferase activity, transferring groups other than amino-acyl groups | molecular_function | Catalysis of the transfer of an acyl group, other than amino-acyl, from one compound (donor) to another (acceptor). [GOC:jl] |
GO:0099177 | regulation of trans-synaptic signaling | biological_process | Any process that modulates the frequency, rate or extent of trans-synaptic signaling. [GOC:dos] |
GO:0016740 | transferase activity | molecular_function | Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2. [ISBN:0198506732] |
GO:0050896 | response to stimulus | biological_process | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus. The process begins with detection of the stimulus and ends with a change in state or activity or the cell or organism. [GOC:ai, GOC:bf] |
GO:0006082 | organic acid metabolic process | biological_process | The chemical reactions and pathways involving organic acids, any acidic compound containing carbon in covalent linkage. [ISBN:0198506732] |
GO:0005737 | cytoplasm | cellular_component | The contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures. [ISBN:0198547684] |
GO:0008152 | metabolic process | biological_process | The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation. [GOC:go_curators, ISBN:0198547684] |
GO:0050793 | regulation of developmental process | biological_process | Any process that modulates the frequency, rate or extent of development, the biological process whose specific outcome is the progression of a multicellular organism over time from an initial condition (e.g. a zygote, or a young adult) to a later condition (e.g. a multicellular animal or an aged adult). [GOC:go_curators] |
GO:0008283 | cell population proliferation | biological_process | The multiplication or reproduction of cells, resulting in the expansion of a cell population. [GOC:mah, GOC:mb] |
GO:0044238 | primary metabolic process | biological_process | The chemical reactions and pathways involving those compounds which are formed as a part of the normal anabolic and catabolic processes. These processes take place in most, if not all, cells of the organism. [GOC:go_curators, http://www.metacyc.org] |
GO:1901566 | organonitrogen compound biosynthetic process | biological_process | The chemical reactions and pathways resulting in the formation of organonitrogen compound. [GOC:pr, GOC:TermGenie] |
GO:0016053 | organic acid biosynthetic process | biological_process | The chemical reactions and pathways resulting in the formation of organic acids, any acidic compound containing carbon in covalent linkage. [ISBN:0198506732] |
GO:0071704 | organic substance metabolic process | biological_process | The chemical reactions and pathways involving an organic substance, any molecular entity containing carbon. [GOC:mah] |
GO:0005524 | ATP binding | molecular_function | Binding to ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator. [ISBN:0198506732] |
GO:0046887 | positive regulation of hormone secretion | biological_process | Any process that activates or increases the frequency, rate or extent of the regulated release of a hormone from a cell. [GOC:ai] |
GO:0005739 | mitochondrion | cellular_component | A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration. [GOC:giardia, ISBN:0198506732] |
GO:0023056 | positive regulation of signaling | biological_process | Any process that activates, maintains or increases the frequency, rate or extent of a signaling process. [GOC:mtg_signal] |
GO:0009056 | catabolic process | biological_process | The chemical reactions and pathways resulting in the breakdown of substances, including the breakdown of carbon compounds with the liberation of energy for use by the cell or organism. [ISBN:0198547684] |
GO:0043169 | cation binding | molecular_function | Binding to a cation, a charged atom or group of atoms with a net positive charge. [GOC:jl] |
GO:0110165 | cellular anatomical entity | cellular_component | A part of a cellular organism that is either an immaterial entity or a material entity with granularity above the level of a protein complex but below that of an anatomical system. Or, a substance produced by a cellular organism with granularity above the level of a protein complex. [GOC:kmv] |
GO:0005886 | plasma membrane | cellular_component | The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. [ISBN:0716731363] |
GO:0043167 | ion binding | molecular_function | Binding to an ion, a charged atoms or groups of atoms. [GOC:jl] |
GO:0031982 | vesicle | cellular_component | Any small, fluid-filled, spherical organelle enclosed by membrane. [GOC:mah, GOC:pz, GOC:vesicles] |
GO:0044283 | small molecule biosynthetic process | biological_process | The chemical reactions and pathways resulting in the formation of small molecules, any low molecular weight, monomeric, non-encoded molecule. [GOC:curators, GOC:pde, GOC:vw] |
GO:0051223 | regulation of protein transport | biological_process | Any process that modulates the frequency, rate or extent of the directed movement of a protein into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. [GOC:ai] |
GO:0002791 | regulation of peptide secretion | biological_process | Any process that modulates the frequency, rate, or extent of peptide secretion. [GOC:add] |
GO:0050796 | regulation of insulin secretion | biological_process | Any process that modulates the frequency, rate or extent of the regulated release of insulin. [GOC:ai] |
GO:2000145 | regulation of cell motility | biological_process | Any process that modulates the frequency, rate or extent of cell motility. [GOC:mah] |
GO:0046872 | metal ion binding | molecular_function | Binding to a metal ion. [GOC:ai] |
GO:0001525 | angiogenesis | biological_process | Blood vessel formation when new vessels emerge from the proliferation of pre-existing blood vessels. [ISBN:0878932453] |
GO:1901575 | organic substance catabolic process | biological_process | The chemical reactions and pathways resulting in the breakdown of an organic substance, any molecular entity containing carbon. [GOC:pr, GOC:TermGenie] |
GO:0003824 | catalytic activity | molecular_function | Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic. [GOC:vw, ISBN:0198506732] |
GO:0051239 | regulation of multicellular organismal process | biological_process | Any process that modulates the frequency, rate or extent of a multicellular organismal process, the processes pertinent to the function of a multicellular organism above the cellular level; includes the integrated processes of tissues and organs. [GOC:ai, GOC:dph, GOC:tb] |
GO:0002793 | positive regulation of peptide secretion | biological_process | Any process that activates or increases the frequency, rate, or extent of peptide secretion. [GOC:add] |
GO:0050794 | regulation of cellular process | biological_process | Any process that modulates the frequency, rate or extent of a cellular process, any of those that are carried out at the cellular level, but are not necessarily restricted to a single cell. For example, cell communication occurs among more than one cell, but occurs at the cellular level. [GOC:go_curators] |
GO:0042221 | response to chemical | biological_process | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a chemical stimulus. [GOC:jl] |
GO:0050708 | regulation of protein secretion | biological_process | Any process that modulates the frequency, rate or extent of the controlled release of a protein from a cell. [GOC:ai] |
GO:0043227 | membrane-bounded organelle | cellular_component | Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane. [GOC:go_curators] |
GO:0045765 | regulation of angiogenesis | biological_process | Any process that modulates the frequency, rate or extent of angiogenesis. [GOC:go_curators] |
GO:0005791 | rough endoplasmic reticulum | cellular_component | The rough (or granular) endoplasmic reticulum (ER) has ribosomes adhering to the outer surface; the ribosomes are the site of translation of the mRNA for those proteins which are either to be retained within the cisternae (ER-resident proteins), the proteins of the lysosomes, or the proteins destined for export from the cell. Glycoproteins undergo their initial glycosylation within the cisternae. [ISBN:0198506732] |
GO:1901564 | organonitrogen compound metabolic process | biological_process | The chemical reactions and pathways involving organonitrogen compound. [GOC:pr, GOC:TermGenie] |
GO:0051966 | regulation of synaptic transmission, glutamatergic | biological_process | Any process that modulates the frequency, rate or extent of glutamatergic synaptic transmission, the process of communication from a neuron to another neuron across a synapse using the neurotransmitter glutamate. [GOC:ai] |
GO:1903532 | positive regulation of secretion by cell | biological_process | Any process that activates or increases the frequency, rate or extent of secretion by cell. [GO_REF:0000058, GOC:pm, GOC:TermGenie, PMID:12130530] |
GO:0051270 | regulation of cellular component movement | biological_process | Any process that modulates the frequency, rate or extent of the movement of a cellular component. [GOC:ai, GOC:dph, GOC:jl] |
GO:0090277 | positive regulation of peptide hormone secretion | biological_process | Any process that increases the rate, frequency, or extent of the regulated release of a peptide hormone from secretory granules. [GOC:tb] |
GO:0065008 | regulation of biological quality | biological_process | Any process that modulates a qualitative or quantitative trait of a biological quality. A biological quality is a measurable attribute of an organism or part of an organism, such as size, mass, shape, color, etc. [GOC:dph, GOC:isa_complete, GOC:mah, GOC:pr, GOC:vw] |
GO:0060341 | regulation of cellular localization | biological_process | Any process that modulates the frequency, rate or extent of a process in which a cell, a substance, or a cellular entity is transported to, or maintained in a specific location within or in the membrane of a cell. [GOC:dph, GOC:tb] |
GO:0050789 | regulation of biological process | biological_process | Any process that modulates the frequency, rate or extent of a biological process. Biological processes are regulated by many means; examples include the control of gene expression, protein modification or interaction with a protein or substrate molecule. [GOC:ai, GOC:go_curators] |
GO:0090276 | regulation of peptide hormone secretion | biological_process | Any process that modulates the rate, frequency, or extent of the regulated release of a peptide hormone from secretory granules. [GOC:tb] |
GO:0051049 | regulation of transport | biological_process | Any process that modulates the frequency, rate or extent of the directed movement of substances (such as macromolecules, small molecules, ions) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. [GOC:ai] |
GO:0006520 | cellular amino acid metabolic process | biological_process | The chemical reactions and pathways involving amino acids, carboxylic acids containing one or more amino groups, as carried out by individual cells. [ISBN:0198506732] |
GO:1901700 | response to oxygen-containing compound | biological_process | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an oxygen-containing compound stimulus. [GOC:pr, GOC:TermGenie] |
GO:0005488 | binding | molecular_function | The selective, non-covalent, often stoichiometric, interaction of a molecule with one or more specific sites on another molecule. [GOC:ceb, GOC:mah, ISBN:0198506732] |
GO:0042995 | cell projection | cellular_component | A prolongation or process extending from a cell, e.g. a flagellum or axon. [GOC:jl, http://www.cogsci.princeton.edu/~wn/] |
GO:0010033 | response to organic substance | biological_process | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an organic substance stimulus. [GOC:sm, PMID:23356676] |
GO:0009058 | biosynthetic process | biological_process | The chemical reactions and pathways resulting in the formation of substances; typically the energy-requiring part of metabolism in which simpler substances are transformed into more complex ones. [GOC:curators, ISBN:0198547684] |
GO:0050806 | positive regulation of synaptic transmission | biological_process | Any process that activates or increases the frequency, rate or extent of synaptic transmission, the process of communication from a neuron to a target (neuron, muscle, or secretory cell) across a synapse. [GOC:ai] |
GO:0018345 | protein palmitoylation | biological_process | The covalent attachment of a palmitoyl group to a protein. [GOC:jl, PMID:15520806] |
GO:0032991 | protein-containing complex | cellular_component | A stable assembly of two or more macromolecules, i.e. proteins, nucleic acids, carbohydrates or lipids, in which at least one component is a protein and the constituent parts function together. [GOC:dos, GOC:mah] |
GO:0016874 | ligase activity | molecular_function | Catalysis of the joining of two molecules, or two groups within a single molecule, using the energy from the hydrolysis of ATP, a similar triphosphate, or a pH gradient. [EC:6.-.-.-, GOC:mah] |
GO:0006807 | nitrogen compound metabolic process | biological_process | The chemical reactions and pathways involving organic or inorganic compounds that contain nitrogen. [GOC:jl, ISBN:0198506732] |
GO:0046914 | transition metal ion binding | molecular_function | Binding to a transition metal ions; a transition metal is an element whose atom has an incomplete d-subshell of extranuclear electrons, or which gives rise to a cation or cations with an incomplete d-subshell. Transition metals often have more than one valency state. Biologically relevant transition metals include vanadium, manganese, iron, copper, cobalt, nickel, molybdenum and silver. [ISBN:0198506732] |
GO:1901576 | organic substance biosynthetic process | biological_process | The chemical reactions and pathways resulting in the formation of an organic substance, any molecular entity containing carbon. [GOC:pr, GOC:TermGenie] |
GO:1901342 | regulation of vasculature development | biological_process | Any process that modulates the frequency, rate or extent of vasculature development. [GOC:TermGenie] |
GO:0040012 | regulation of locomotion | biological_process | Any process that modulates the frequency, rate or extent of locomotion of a cell or organism. [GOC:ems] |
GO:0010817 | regulation of hormone levels | biological_process | Any process that modulates the levels of hormone within an organism or a tissue. A hormone is any substance formed in very small amounts in one specialized organ or group of cells and carried (sometimes in the bloodstream) to another organ or group of cells in the same organism, upon which it has a specific regulatory action. [GOC:BHF, GOC:dph, GOC:tb] |
GO:0016409 | palmitoyltransferase activity | molecular_function | Catalysis of the transfer of a palmitoyl (CH3-[CH2]14-CO-) group to an acceptor molecule. [GOC:ai] |
GO:0043679 | axon terminus | cellular_component | Terminal inflated portion of the axon, containing the specialized apparatus necessary to release neurotransmitters. The axon terminus is considered to be the whole region of thickening and the terminal button is a specialized region of it. [GOC:dph, GOC:jl] |
GO:0008652 | cellular amino acid biosynthetic process | biological_process | The chemical reactions and pathways resulting in the formation of amino acids, organic acids containing one or more amino substituents. [ISBN:0198506732] |
GO:0050804 | modulation of chemical synaptic transmission | biological_process | Any process that modulates the frequency or amplitude of synaptic transmission, the process of communication from a neuron to a target (neuron, muscle, or secretory cell) across a synapse. Amplitude, in this case, refers to the change in postsynaptic membrane potential due to a single instance of synaptic transmission. [GOC:ai] |
GO:0051047 | positive regulation of secretion | biological_process | Any process that activates or increases the frequency, rate or extent of the controlled release of a substance from a cell or a tissue. [GOC:ai] |
GO:0023051 | regulation of signaling | biological_process | Any process that modulates the frequency, rate or extent of a signaling process. [GOC:mtg_signal] |
GO:1903530 | regulation of secretion by cell | biological_process | Any process that modulates the frequency, rate or extent of secretion by cell. [GO_REF:0000058, GOC:pm, GOC:TermGenie, PMID:12130530] |
GO:0044249 | cellular biosynthetic process | biological_process | The chemical reactions and pathways resulting in the formation of substances, carried out by individual cells. [GOC:jl] |
GO:0030334 | regulation of cell migration | biological_process | Any process that modulates the frequency, rate or extent of cell migration. [GOC:go_curators] |
GO:0090087 | regulation of peptide transport | biological_process | Any process that modulates the frequency, rate or extent of the directed movement of peptides, compounds of two or more amino acids where the alpha carboxyl group of one is bound to the alpha amino group of another, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. [GOC:dph, GOC:tb] |
GO:0044282 | small molecule catabolic process | biological_process | The chemical reactions and pathways resulting in the breakdown of small molecules, any low molecular weight, monomeric, non-encoded molecule. [GOC:curators, GOC:vw] |
GO:0051050 | positive regulation of transport | biological_process | Any process that activates or increases the frequency, rate or extent of the directed movement of substances (such as macromolecules, small molecules, ions) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. [GOC:ai] |
GO:0050679 | positive regulation of epithelial cell proliferation | biological_process | Any process that activates or increases the rate or extent of epithelial cell proliferation. [GOC:ai] |
GO:0016746 | acyltransferase activity | molecular_function | Catalysis of the transfer of an acyl group from one compound (donor) to another (acceptor). [GOC:jl, ISBN:0198506732] |
GO:0050714 | positive regulation of protein secretion | biological_process | Any process that activates or increases the frequency, rate or extent of the controlled release of a protein from a cell. [GOC:ai] |
GO:0010646 | regulation of cell communication | biological_process | Any process that modulates the frequency, rate or extent of cell communication. Cell communication is the process that mediates interactions between a cell and its surroundings. Encompasses interactions such as signaling or attachment between one cell and another cell, between a cell and an extracellular matrix, or between a cell and any other aspect of its environment. [GOC:dph, GOC:tb] |
GO:0070201 | regulation of establishment of protein localization | biological_process | Any process that modulates the frequency, rate or extent of the directed movement of a protein to a specific location. [GOC:BHF, GOC:mah] |
GO:0010647 | positive regulation of cell communication | biological_process | Any process that increases the frequency, rate or extent of cell communication. Cell communication is the process that mediates interactions between a cell and its surroundings. Encompasses interactions such as signaling or attachment between one cell and another cell, between a cell and an extracellular matrix, or between a cell and any other aspect of its environment. [GOC:dph, GOC:tb] |
GO:0044248 | cellular catabolic process | biological_process | The chemical reactions and pathways resulting in the breakdown of substances, carried out by individual cells. [GOC:jl] |
GO:0032879 | regulation of localization | biological_process | Any process that modulates the frequency, rate or extent of any process in which a cell, a substance, or a cellular entity is transported to, or maintained in, a specific location. [GOC:mah] |
GO:2000026 | regulation of multicellular organismal development | biological_process | Any process that modulates the frequency, rate or extent of multicellular organismal development. [GOC:obol] |
GO:0043436 | oxoacid metabolic process | biological_process | The chemical reactions and pathways involving any oxoacid; an oxoacid is a compound which contains oxygen, at least one other element, and at least one hydrogen bound to oxygen, and which produces a conjugate base by loss of positive hydrogen ion(s) (hydrons). [Wikipedia:Oxyacid] |
GO:1901605 | alpha-amino acid metabolic process | biological_process | The chemical reactions and pathways involving an alpha-amino acid. [GOC:TermGenie] |
GO:0051046 | regulation of secretion | biological_process | Any process that modulates the frequency, rate or extent of the controlled release of a substance from a cell or a tissue. [GOC:ai] |
GO:0016054 | organic acid catabolic process | biological_process | The chemical reactions and pathways resulting in the breakdown of organic acids, any acidic compound containing carbon in covalent linkage. [ISBN:0198506732] |
GO:0042254 | ribosome biogenesis | biological_process | A cellular process that results in the biosynthesis of constituent macromolecules, assembly, and arrangement of constituent parts of ribosome subunits; includes transport to the sites of protein synthesis. [GOC:ma, PMID:26404467, Wikipedia:Ribosome_biogenesis] |
GO:0022603 | regulation of anatomical structure morphogenesis | biological_process | Any process that modulates the frequency, rate or extent of anatomical structure morphogenesis. [GOC:mah] |
GO:0044281 | small molecule metabolic process | biological_process | The chemical reactions and pathways involving small molecules, any low molecular weight, monomeric, non-encoded molecule. [GOC:curators, GOC:pde, GOC:vw] |
GO:0042802 | identical protein binding | molecular_function | Binding to an identical protein or proteins. [GOC:jl] |
GO:0120025 | plasma membrane bounded cell projection | cellular_component | A prolongation or process extending from a cell and that is bounded by plasma membrane, e.g. a cilium, lamellipodium, or axon. [GOC:krc] |
GO:0009987 | cellular process | biological_process | Any process that is carried out at the cellular level, but not necessarily restricted to a single cell. For example, cell communication occurs among more than one cell, but occurs at the cellular level. [GOC:go_curators, GOC:isa_complete] |
GO:0140096 | catalytic activity, acting on a protein | molecular_function | Catalytic activity that acts to modify a protein. [GOC:molecular_function_refactoring, GOC:pdt] |
GO:0048522 | positive regulation of cellular process | biological_process | Any process that activates or increases the frequency, rate or extent of a cellular process, any of those that are carried out at the cellular level, but are not necessarily restricted to a single cell. For example, cell communication occurs among more than one cell, but occurs at the cellular level. [GOC:jid] |
GO:0043226 | organelle | cellular_component | Organized structure of distinctive morphology and function. Includes the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton, and prokaryotic structures such as anammoxosomes and pirellulosomes. Excludes the plasma membrane. [GOC:go_curators] |
GO:1901565 | organonitrogen compound catabolic process | biological_process | The chemical reactions and pathways resulting in the breakdown of organonitrogen compound. [GOC:pr, GOC:TermGenie] |
GO:0005515 | protein binding | molecular_function | Binding to a protein. [GOC:go_curators] |
GO:0009267 | cellular response to starvation | biological_process | Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of deprivation of nourishment. [GOC:jl] |
GO:0044237 | cellular metabolic process | biological_process | The chemical reactions and pathways by which individual cells transform chemical substances. [GOC:go_curators] |
GO:0019752 | carboxylic acid metabolic process | biological_process | The chemical reactions and pathways involving carboxylic acids, any organic acid containing one or more carboxyl (COOH) groups or anions (COO-). [ISBN:0198506732] |
GO:0009063 | cellular amino acid catabolic process | biological_process | The chemical reactions and pathways resulting in the breakdown of amino acids, organic acids containing one or more amino substituents. [GOC:ai] |
GO:0048518 | positive regulation of biological process | biological_process | Any process that activates or increases the frequency, rate or extent of a biological process. Biological processes are regulated by many means; examples include the control of gene expression, protein modification or interaction with a protein or substrate molecule. [GOC:jid] |
GO:0000287 | magnesium ion binding | molecular_function | Binding to a magnesium (Mg) ion. [GOC:ai] |
GO:0005634 | nucleus | cellular_component | A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent. [GOC:go_curators] |