• Product name
  • Description
    Rabbit polyclonal to Rab5b
  • Host species
  • Tested applications
    Suitable for: ICC/IF, WBmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse, Rat, Orangutan
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 150 to the C-terminus of Human Rab5b.

  • Positive control
    • This antibody gave a positive signal in the following lysates: Human Placenta Tissue; HeLa Whole Cell; Jurkat Whole Cell; HEK293 Whole Cell; HepG2 Whole Cell; Human Brain Tissue.



Our Abpromise guarantee covers the use of ab72907 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ICC/IF Use a concentration of 5 µg/ml.
WB Use a concentration of 1 mg/ml. Detects a band of approximately 26 kDa (predicted molecular weight: 23 kDa).


  • Relevance
    Rab5b is a member of the Rab family of small (monomeric) G proteins. Like other small G proteins, Rab5b switches between an inactive, GDP-form and an active, GTP-bound form. GDP/GTP exchange factors (GEFs) catalyse the conversion from the GDP-bound form to the GTP-bound form, while GTPase-activating proteins (GAPs) catalyse GTP hydrolysis to GDP. Rab5b is involved in endocytosis and recycling of cell surface molecules. It interacts with RIN2 and RIN3, which regulate its function, possibly by acting as GEFs. Knockdown of Rab5b abolished group I metabotropic glutamate receptor (mGluR)-mediated neuroprotection. Furthermore, Rab5b interacts with LRRK2, the defective gene at the PARK8 locus that results in Parkinson's disease. Roles for Rab5b in neurodegenerative disease, neuroprotection, and synaptic plasticity have been suggested.
  • Cellular localization
    Cell Membrane, Endosome
  • Database links
  • Alternative names
    • Rab 5b antibody
    • Rab5 b antibody
    • RAB5B, member RAS oncogene family antibody
    • Ras related protein Rab 5B antibody
    • RAS-associated protein RAB5B antibody
    see all


  • All lanes : Anti-Rab5b antibody (ab72907) at 1 µg/ml

    Lane 1 : Human placenta tissue lysate - total protein (ab29745)
    Lane 2 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate
    Lane 3 : Jurkat (Human T cell lymphoblast-like cell line) Whole Cell Lysate
    Lane 4 : HEK293 (Human embryonic kidney cell line) Whole Cell Lysate
    Lane 5 : HepG2 (Human hepatocellular liver carcinoma cell line) Whole Cell Lysate
    Lane 6 : Human brain tissue lysate - total protein (ab29466)

    Lysates/proteins at 10 µg per lane.

    All lanes : Goat polyclonal Secondary Antibody to Rabbit IgG - H&L (HRP), pre-adsorbed at 1/5000 dilution

    Developed using the ECL technique.

    Performed under reducing conditions.

    Predicted band size: 23 kDa
    Observed band size: 26 kDa (why is the actual band size different from the predicted?)
    Additional bands at: 37 kDa, 70 kDa, 90 kDa. We are unsure as to the identity of these extra bands.

    Exposure time: 8 minutes

    Rab5b contains a number of potential lipidation sites (SwissProt) which may explain its migration at a higher molecular weight than predicted.
  • ICC/IF image of ab72907 stained MCF7 cells. The cells were 100% methanol fixed (5 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 (ab72907, 5µg/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. This antibody also gave a positive result in 100% methanol fixed (5 min) HepG2 cells at 5µg/ml.


ab72907 has not yet been referenced specifically in any publications.

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