Ras-related protein Rab-5A is a protein that in humans is encoded by the RAB5A gene. [5] [6]
RAB5A localizes to early endosomes where it is involved in the recruitment of RAB7A and the maturation of these compartments to early endosomes. [7] It drives the maturation of endosomes by transporting vacuolar (H+)-ATPases (V-ATPases) from trans-Golgi network to endocytic vesicles. [8]
RAB5A has been shown to interact with:
Endosomes are a collection of intracellular sorting organelles in eukaryotic cells. They are parts of the endocytic membrane transport pathway originating from the trans Golgi network. Molecules or ligands internalized from the plasma membrane can follow this pathway all the way to lysosomes for degradation or can be recycled back to the cell membrane in the endocytic cycle. Molecules are also transported to endosomes from the trans Golgi network and either continue to lysosomes or recycle back to the Golgi apparatus.
The Rab family of proteins is a member of the Ras superfamily of small G proteins. Approximately 70 types of Rabs have now been identified in humans. Rab proteins generally possess a GTPase fold, which consists of a six-stranded beta sheet which is flanked by five alpha helices. Rab GTPases regulate many steps of membrane trafficking, including vesicle formation, vesicle movement along actin and tubulin networks, and membrane fusion. These processes make up the route through which cell surface proteins are trafficked from the Golgi to the plasma membrane and are recycled. Surface protein recycling returns proteins to the surface whose function involves carrying another protein or substance inside the cell, such as the transferrin receptor, or serves as a means of regulating the number of a certain type of protein molecules on the surface.
Ras homolog gene family, member B, also known as RHOB, is a protein which in humans is encoded by the RHOB gene.
Ras-related protein Rab-11A is a protein that in humans is encoded by the RAB11A gene.
Ras-related protein Rab-3A is a protein that in humans is encoded by the RAB3A gene. It is involved in calcium-triggered exocytosis in neurons.
Ras-related protein Rab-4A is a protein that in humans is encoded by the RAB4A gene.
Ras-related protein Rab-1A is a protein that in humans is encoded by the RAB1A gene.
Syntaxin-12 is a protein that in humans is encoded by the STX12 gene.
Ras-related protein Rab-5B is a protein that in humans is encoded by the RAB5B gene.
Rab5 GDP/GTP exchange factor is a protein that in humans is encoded by the RABGEF1 gene.
Rab11 family-interacting protein 5 is a protein that in humans is encoded by the RAB11FIP5 gene.
Adaptor protein, phosphotyrosine interacting with PH domain and leucine zipper 1 (APPL1), or DCC-interacting protein 13-alpha (DIP13alpha), is a protein that in humans is encoded by the APPL1 gene. APPL1 contains several key interactory domains: pleckstrin homology (PH) domain, phosphotyrosine-binding (PTB) domain and Bin–Amphiphysin–Rvs (BAR) domain.
Rab GTPase-binding effector protein 1 is an enzyme that in humans is encoded by the RABEP1 gene. It belongs to rabaptin protein family.
USP6 N-terminal-like protein is a protein that in humans is encoded by the USP6NL gene.
RhoD is a small signaling G protein, and is a member of the Rac subfamily of the family Rho family of GTPases. It is encoded by the gene RHOD.
Ras-related protein Rab-11B is a protein that in humans is encoded by the RAB11B gene. Rab11b is reported as most abundantly expressed in brain, heart and testes.
Ras-related protein Rab-5C is a protein that in humans is encoded by the RAB5C gene. RAB5C belongs to the Ras-related protein family.
Rabenosyn-5 is a protein that in humans is encoded by the ZFYVE20 gene.
Rabaptin is a key protein involved in regeneration of injured axons.
Ras-related protein Rab-4B is a protein that in humans is encoded by the RAB4B gene.