The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Use a concentration of 1 µg/ml.
Use at an assay dependent dilution.
Use a concentration of 0.5 - 1 µg/ml. Predicted molecular weight: 23 kDa.
Use at an assay dependent dilution.
FunctionKey regulator in endo-lysosomal trafficking. Governs early-to-late endosomal maturation, microtubule minus-end as well as plus-end directed endosomal migration and positioning, and endosome-lysosome transport through different protein-protein interaction cascades. Plays a central role, not only in endosomal traffic, but also in many other cellular and physiological events, such as growth-factor-mediated cell signaling, nutrient-transportor mediated nutrient uptake, neurotrophin transport in the axons of neurons and lipid metabolism. Also involved in regulation of some specialized endosomal membrane trafficking, such as maturation of melanosomes, pathogen-induced phagosomes (or vacuoles) and autophagosomes. Plays a role in the maturation and acidification of phagosomes that engulf pathogens, such as S.aureus and M.tuberculosis. Plays a role in the fusion of phagosomes with lysosomes. Plays important roles in microbial pathogen infection and survival, as well as in participating in the life cycle of viruses. Microbial pathogens possess survival strategies governed by RAB7A, sometimes by employing RAB7A function (e.g. Salmonella) and sometimes by excluding RAB7A function (e.g. Mycobacterium). In concert with RAC1, plays a role in regulating the formation of RBs (ruffled borders) in osteoclasts. Controls the endosomal trafficking and neurite outgrowth signaling of NTRK1/TRKA. Regulates the endocytic trafficking of the EGF-EGFR complex by regulating its lysosomal degradation.
Tissue specificityWidely expressed; high expression found in skeletal muscle.
Involvement in diseaseDefects in RAB7A are the cause of Charcot-Marie-Tooth disease type 2B (CMT2B) [MIM:600882]; also known as hereditary motor and sensory neuropathy II (HMSN2). CMT2B is a form of Charcot-Marie-Tooth disease, the most common inherited disorder of the peripheral nervous system. Charcot-Marie-Tooth disease is classified in two main groups on the basis of electrophysiologic properties and histopathology: primary peripheral demyelinating neuropathy or CMT1, and primary peripheral axonal neuropathy or CMT2. Neuropathies of the CMT2 group are characterized by signs of axonal regeneration in the absence of obvious myelin alterations, normal or slightly reduced nerve conduction velocities, and progressive distal muscle weakness and atrophy. CMT2B is clinically characterized by marked distal muscle weakness and a high frequency of foot ulcers, infections and amputations of the toes. CMT2B inheritance is autosomal dominant.
Sequence similaritiesBelongs to the small GTPase superfamily. Rab family.
Cellular localizationLate endosome. Lysosome. Cytoplasmic vesicle > phagosome. Melanosome. Cytoplasmic vesicle > phagosome membrane. Co-localizes with OSBPL1A at the late endosome. Found in the ruffled border (a late endosomal-like compartment in the plasma membrane) of bone-resorbing osteoclasts. Recruited to phagosomes containing S.aureus or Mycobacterium.
ICC/IF image of ab50533 stained HepG2 cells. The cells were 4% formaldehyde fixed (10 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab50533, 1µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.
Western blot - Anti-RAB7 antibody [Rab7-117] (ab50533)This image is courtesy of an Abreview submitted by Armen Petrosyan
Anti-RAB7 antibody [Rab7-117] (ab50533) at 1/2000 dilution + HepG2 whole cell lysate at 1/2000 dilution
Secondary HRP-conjugated donkey anti-mouse IgG polyclonal at 1/1 dilution Developed using the ECL technique
Performed under reducing conditions.
Predicted band size : 23 kDa
Exposure time : 30 seconds
This image is courtesy of an Abreview submitted by Armen Petrosyan
Blocked with 5% milk for 1 hour at 22°C.
Incubated with the primary antibody for 12 hour at 4°C in PBS + 1% BSA.
Immunocytochemistry/ Immunofluorescence - Anti-RAB7 antibody [Rab7-117] (ab50533)This image is courtesy of an Abreview submitted by Armen Petrosyan
ab50533 staining RAB7 in HepG2 cells by ICC/IF (Immunocytochemistry/immunofluorescence). Cells were fixed with formaldehyde, permeabilized with 0.2% Triton X-100 and blocked with 1% serum for 1 hour at 22°C. Samples were incubated with primary antibody (1/50 in PBST + 1% donkey serum) for 3 hours at 22°C. An Alexa Fluor® 488-conjugated donkey anti-mouse IgG polyclonal (1/200) was used as the secondary antibody.
References for Anti-RAB7 antibody [Rab7-117] (ab50533)
This product has been referenced in:
Spencer B et al. Reducing Endogenous a-Synuclein Mitigates the Degeneration of Selective Neuronal Populations in an Alzheimer's Disease Transgenic Mouse Model. J Neurosci36:7971-84 (2016).
Read more (PubMed: 27466341) »
Dolat L & Spiliotis ET Septins promote macropinosome maturation and traffic to the lysosome by facilitating membrane fusion. J Cell Biol214:517-27 (2016).
Read more (PubMed: 27551056) »