| GO term | GO name | GO namespace | GO def |
| GO:0031982 | vesicle | cellular_component | Any small, fluid-filled, spherical organelle enclosed by membrane. [GOC:mah, GOC:pz, GOC:vesicles] |
| GO:0012506 | vesicle membrane | cellular_component | The lipid bilayer surrounding any membrane-bounded vesicle in the cell. [GOC:mah, GOC:vesicle] |
| GO:0005765 | lysosomal membrane | cellular_component | The lipid bilayer surrounding the lysosome and separating its contents from the cell cytoplasm. [GOC:ai] |
| GO:0005216 | ion channel activity | molecular_function | Enables the facilitated diffusion of an ion (by an energy-independent process) by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism. May be either selective (it enables passage of a specific ion only) or non-selective (it enables passage of two or more ions of same charge but different size). [GOC:cy, GOC:mtg_transport, GOC:pr, ISBN:0815340729] |
| GO:0038023 | signaling receptor activity | molecular_function | Receiving a signal and transmitting it in the cell to initiate a change in cell activity. A signal is a physical entity or change in state that is used to transfer information in order to trigger a response. [GOC:bf, GOC:signaling] |
| GO:0015075 | ion transmembrane transporter activity | molecular_function | Enables the transfer of an ion from one side of a membrane to the other. [GOC:dgf, GOC:mtg_transport, ISBN:0815340729] |
| GO:0030659 | cytoplasmic vesicle membrane | cellular_component | The lipid bilayer surrounding a cytoplasmic vesicle. [GOC:mah] |
| GO:0022857 | transmembrane transporter activity | molecular_function | Enables the transfer of a substance, usually a specific substance or a group of related substances, from one side of a membrane to the other. [GOC:jid, GOC:mtg_transport, ISBN:0815340729] |
| 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:0005215 | transporter activity | molecular_function | Enables the directed movement of substances (such as macromolecules, small molecules, ions) into, out of or within a cell, or between cells. [GOC:ai, GOC:dgf] |
| GO:0015318 | inorganic molecular entity transmembrane transporter activity | molecular_function | Enables the transfer of an inorganic molecular entity from the outside of a cell to the inside of the cell across a membrane. An inorganic molecular entity is a molecular entity that contains no carbon. [GOC:mtg_transport, ISBN:0815340729] |
| GO:0004888 | transmembrane signaling receptor activity | molecular_function | Combining with an extracellular or intracellular signal and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity or state as part of signal transduction. [GOC:go_curators, Wikipedia:Transmembrane_receptor] |
| GO:0022803 | passive transmembrane transporter activity | molecular_function | Enables the transfer of a single solute from one side of a membrane to the other by a mechanism involving conformational change, either by facilitated diffusion or in a membrane potential dependent process if the solute is charged. [GOC:mtg_transport, ISBN:0815340729] |
| 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:0031090 | organelle membrane | cellular_component | A membrane that is one of the two lipid bilayers of an organelle envelope or the outermost membrane of single membrane bound organelle. [GOC:dos, GOC:mah] |
| GO:0005261 | cation channel activity | molecular_function | Enables the energy-independent passage of cations across a lipid bilayer down a concentration gradient. [GOC:def, GOC:dph, GOC:mtg_transport, GOC:pr, ISBN:0815340729] |
| GO:0016021 | integral component of membrane | cellular_component | The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane. [GOC:dos, GOC:go_curators] |
| GO:0098588 | bounding membrane of organelle | cellular_component | The lipid bilayer that forms the outer-most layer of an organelle. [GOC:dos] |
| GO:0022836 | gated channel activity | molecular_function | Enables the transmembrane transfer of a solute by a channel that opens in response to a specific stimulus. [GOC:mtg_transport] |
| GO:0098655 | cation transmembrane transport | biological_process | The process in which a cation is transported across a membrane. [GOC:dos, GOC:vw] |
| 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:0015267 | channel activity | molecular_function | Enables the energy-independent facilitated diffusion, mediated by passage of a solute through a transmembrane aqueous pore or channel. Stereospecificity is not exhibited but this transport may be specific for a particular molecular species or class of molecules. [GOC:mtg_transport, ISBN:0815340729] |
| GO:0005227 | calcium activated cation channel activity | molecular_function | Enables the calcium concentration-regulatable energy-independent passage of cations across a lipid bilayer down a concentration gradient. [GOC:dph, GOC:mtg_transport] |
| GO:0005515 | protein binding | molecular_function | Binding to a protein. [GOC:go_curators] |
| GO:0060089 | molecular transducer activity | molecular_function | A compound molecular function in which an effector function is controlled by one or more regulatory components. [GOC:dos, GOC:pdt] |
| GO:0003676 | nucleic acid binding | molecular_function | Binding to a nucleic acid. [GOC:jl] |
| GO:0022890 | inorganic cation transmembrane transporter activity | molecular_function | Enables the transfer of inorganic cations from one side of a membrane to the other. Inorganic cations are atoms or small molecules with a positive charge that do not contain carbon in covalent linkage. [GOC:ai, GOC:mtg_transport, ISBN:0815340729] |
| GO:0016020 | membrane | cellular_component | A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it. [GOC:dos, GOC:mah, ISBN:0815316194] |
| GO:0043231 | intracellular membrane-bounded organelle | cellular_component | Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane. [GOC:go_curators] |
| GO:0030667 | secretory granule membrane | cellular_component | The lipid bilayer surrounding a secretory granule. [GOC:mah] |
| GO:0008324 | cation transmembrane transporter activity | molecular_function | Enables the transfer of cation from one side of a membrane to the other. [GOC:dgf, GOC:mtg_transport, ISBN:0815340729] |