Monomera GTP-bindande proteiner
En klass monomera GTP-bindande proteiner av låg molekylvikt (20-25 kDa) som reglerar en rad intracellulära processer. Den GTP-bundna formen av proteinet är aktiv och hämmas av sin inneboende GTPas-verkan, som regleras av ett antal olika GTPas-aktiverare, GDP-dissociationshämmare och guaninnukleotidbytesfaktorer. EC 3.6.5.2.
GTP-bindande proteiner
rab3 GTP-bindande proteiner
Rab3 GTP-binding proteins are a subfamily of Rab proteins, which are small guanosine triphosphate (GTP) binding proteins involved in regulating intracellular vesicle trafficking. Specifically, Rab3 proteins play a crucial role in the regulation of neurotransmitter release at synapses by controlling the docking and fusion of synaptic vesicles with the presynaptic membrane. They function as molecular switches that cycle between an active GTP-bound state and an inactive GDP-bound state, regulating various aspects of vesicle transport and membrane trafficking.
Guanosintrifosfat
Guanosin 5'-O-(3-tiotrifosfat)
rhoB GTP-bindande proteiner
RhoB GTP-binding proteins are a subtype of the Rho GTPase family that bind to and hydrolyze GTP, playing crucial roles in regulating various cellular processes such as actin cytoskeleton organization, gene transcription, and cell cycle progression. They are involved in signal transduction pathways that control cell behavior, including cell migration, proliferation, and survival, and have been implicated in several diseases, including cancer. RhoB proteins are unique within the Rho GTPase family as they can be localized to both the cytoplasm and the plasma membrane, allowing them to play diverse roles in cell regulation.
rap GTP-bindande proteiner
'Rap GTP-bindande proteiner' är en typ av intracellulära signalproteiner som binder och hydrolyserar GTP (guanosintrifosfat) till GDP (guanosindifosfat). Dessa proteiner fungerar som molekylära switches i cellulär signaltransduktionsvägar, inklusive viktiga signaleringsvägar som reglerar celldelning, cellyta och cellmotilitet. Rap-proteinerna är en underfamilj av Ras-superfamiljen av GTPaser och de aktiveras och desaktiveras genom att byta mellan GTP- och GDP-bundna former med hjälp av olika regulatoriska proteiner.