EOG8VHNM9 GO:0004663 13/91 Rab geranylgeranyltransferase activity molecular_function "Catalysis of the reaction: 2 geranylgeranyl diphosphate + protein-cysteine = 2 S-geranylgeranyl-protein + 2 diphosphate. This reaction is the formation of two thioether linkages between the C-1 atom of the geranylgeranyl groups and two cysteine residues within the terminal sequence motifs XXCC, XCXC or CCXX. Known substrates include Ras-related GTPases of a single family and the Rab family." [EC:2.5.1.60, GOC:mah, PMID:8621375] EOG8VHNM9 GO:0005968 13/91 Rab-protein geranylgeranyltransferase complex cellular_component "A heterodimeric enzyme complex, which in mammals is composed of an alpha and a beta subunit, and which associates with an accessory protein Rep (Rab escort protein). Catalyzes of the transfer of a geranyl-geranyl group from geranylgeranyl pyrophosphate to a Rab protein." [GOC:jl, PMID:11886217] EOG8VHNM9 GO:0006886 13/91 intracellular protein transport biological_process "The directed movement of proteins in a cell, including the movement of proteins between specific compartments or structures within a cell, such as organelles of a eukaryotic cell." [GOC:mah] EOG8VHNM9 GO:0016740 2/91 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] EOG8VHNM9 GO:0007269 1/91 neurotransmitter secretion biological_process "The regulated release of neurotransmitter into the synaptic cleft. A neurotransmitter is any of a group of substances that are released on excitation from the axon terminal of a presynaptic neuron of the central or peripheral nervous system and travel across the synaptic cleft to either excite or inhibit the target cell. Among the many substances that have the properties of a neurotransmitter are acetylcholine, noradrenaline, adrenaline, dopamine, glycine, gamma-aminobutyrate, glutamic acid, substance P, enkephalins, endorphins and serotonin." [CHEBI:25512, GOC:dph] EOG8VHNM9 GO:0008021 1/91 synaptic vesicle cellular_component "A secretory organelle, some 50 nm in diameter, of presynaptic nerve terminals; accumulates in high concentrations of neurotransmitters and secretes these into the synaptic cleft by fusion with the 'active zone' of the presynaptic plasma membrane." [PMID:10099709] EOG8VHNM9 GO:0005096 1/91 GTPase activator activity molecular_function "Binds to and increases the activity of a GTPase, an enzyme that catalyzes the hydrolysis of GTP." [GOC:mah] EOG8VHNM9 GO:0016020 1/91 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] EOG8VHNM9 GO:0005737 1/91 cytoplasm cellular_component "All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures." [ISBN:0198547684] EOG8VHNM9 GO:0048471 1/91 perinuclear region of cytoplasm cellular_component "Cytoplasm situated near, or occurring around, the nucleus." [GOC:jid] EOG8VHNM9 GO:0000922 1/91 spindle pole cellular_component "Either of the ends of a spindle, where spindle microtubules are organized; usually contains a microtubule organizing center and accessory molecules, spindle microtubules and astral microtubules." [GOC:clt] EOG8VHNM9 GO:0016192 1/91 vesicle-mediated transport biological_process "A cellular transport process in which transported substances are moved in membrane-bounded vesicles; transported substances are enclosed in the vesicle lumen or located in the vesicle membrane. The process begins with a step that directs a substance to the forming vesicle, and includes vesicle budding and coating. Vesicles are then targeted to, and fuse with, an acceptor membrane." [GOC:ai, GOC:mah, ISBN:08789310662000] EOG8VHNM9 GO:0005818 1/91 aster cellular_component "An array of microtubules emanating from a spindle pole MTOC that do not connect to kinetochores." [GOC:clt] EOG8VHNM9 GO:0007049 1/91 cell cycle biological_process "The progression of biochemical and morphological phases and events that occur in a cell during successive cell replication or nuclear replication events. Canonically, the cell cycle comprises the replication and segregation of genetic material followed by the division of the cell, but in endocycles or syncytial cells nuclear replication or nuclear division may not be followed by cell division." [GOC:go_curators, GOC:mtg_cell_cycle]