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GO:0005575
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cellular_component
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A location, relative to cellular compartments and structures, occupied by a macromolecular machine. There are three types of cellular components described in the gene ontology: (1) the cellular anatomical entity where a gene product carries out a molecular function (e.g., plasma membrane, cytoskeleton) or membrane-enclosed compartments (e.g., mitochondrion); (2) virion components, where viral proteins act, and (3) the stable macromolecular complexes of which gene product are parts (e.g., the clathrin complex). |
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GO:0110165
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cellular anatomical structure
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A part of a cellular organism consisting of a material entity with granularity above the level of a protein complex but below that of an anatomical system. Note that cellular organisms exclude viruses. |
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GO:0071944
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cell periphery
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The broad region around and including the plasma membrane of a cell, encompassing the cell cortex (inside the cell), the plasma membrane, and any external encapsulating structures. |
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GO:0016020
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membrane
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A lipid bilayer along with all the proteins and protein complexes embedded in it and attached to it. |
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GO:0005886
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plasma membrane
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The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. |
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GO:0120025
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plasma membrane bounded cell projection
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A prolongation or process extending from a cell and that is bounded by plasma membrane, e.g. a cilium, lamellipodium, or axon. |
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GO:0042995
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cell projection
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A prolongation or process extending from a cell, e.g. a flagellum or axon. |
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GO:0098590
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plasma membrane region
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A membrane that is a (regional) part of the plasma membrane. |
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GO:0031252
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cell leading edge
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The area of a motile cell closest to the direction of movement. |
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GO:0043005
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neuron projection
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A prolongation or process extending from a nerve cell, e.g. an axon or dendrite. |
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GO:0030424
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axon
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The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter. |
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GO:0031253
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cell projection membrane
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The portion of the plasma membrane surrounding a plasma membrane bounded cell surface projection. |
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GO:0032589
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neuron projection membrane
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The portion of the plasma membrane surrounding a neuron projection. |
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GO:0030673
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axolemma
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The portion of the plasma membrane surrounding an axon; it is a specialized trilaminar random mosaic of protein molecules floating within a fluid matrix of highly mobile phospholipid molecules, 7-8 nm in thickness. |
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GO:0044304
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main axon
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The main axonal trunk, as opposed to the collaterals; i.e., excluding collaterals, terminal, spines, or dendrites. |
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GO:0031256
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leading edge membrane
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The portion of the plasma membrane surrounding the leading edge of a motile cell. |
