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GO:0032991
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protein-containing complex
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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. |
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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:0098796
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membrane protein complex
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Any protein complex that is part of a membrane. |
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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:0098797
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plasma membrane protein complex
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Any protein complex that is part of the plasma membrane. |
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GO:0043235
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receptor complex
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Any protein complex that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function. |
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GO:0036454
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growth factor complex
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A protein complex that has growth factor activity. |
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GO:1990265
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platelet-derived growth factor complex
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A protein complex consisting of two chains of platelet-derived growth factor (PDGF) subunits. PDGF dimers bind to PDGF receptors in the plasma membrane and induce receptor dimerization and activation. PDGFs are involved in a wide variety of signaling processes. PDGFs are found in all vertebrates where at least 2 different chains (A and B) exist. In human (and other mammals), four types of PDGF chains (A, B, C, and D) are known which form five different dimers (AA, AB, BB, CC and DD). |
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GO:1990270
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platelet-derived growth factor receptor-ligand complex
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A tetrameric protein complex consisting of two platelet-derived growth factor (PDGF) receptor subunits and two PDGF ligand subunits. Binding of the PDGF ligand dimer to the PDGF receptor in the plasma membrane induces receptor dimerization and activation. PDGFs are involved in a wide variety of signaling processes and are found in all vertebrates. At least two different receptor chains (A and B) and four types of ligand chains (A, B, C, and D) are known forming a wide variety of combinations of receptor-ligand complexes. |
