All lanes : Anti-Rab9 antibody [Mab9] (ab2810) at 1/1000 dilution

Lane 1 : Wild-type HeLa cell lysate
Lane 2 : RAB9A knockout HeLa cell lysate
Lane 3 : MCF7 cell lysate
Lane 4 : MDA-MB-231 cell lysate

Lysates/proteins at 20 µg per lane.

Secondary
All lanes : Goat Anti-Rabbit IgG H&L (IRDye® 680RD) preadsorbed (ab216777) at 1/10000 dilution

Predicted band size: 23 kDa
Observed band size: 25 kDa why is the actual band size different from the predicted?

This data was developed using the same antibody clone in a different buffer formulation (ab2810).

Lanes 1-4: Merged signal (red and green). Green - ab2810 observed at 25 kDa. Red - loading control ab181602 observed at 36 kDa. 

 ab2810 Anti-Rab9 antibody [Mab9] was shown to specifically react with Rab9 in wild-type HeLa cells. Loss of signal was observed when knockout cell line ab265693 (knockout cell lysate ab257625) was used.  Wild-type and Rab9 knockout samples were subjected to SDS-PAGE.  ab2810 and Anti-GAPDH antibody[EPR16891] - Loading Control (ab181602) were incubated at room temperature for 2. 5 hours at 1 in 1000 dilution and 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye^® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye^® 680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.

ab2810 (2µg/ml) staining Rab9 in human spleen, using an automated system (DAKO Autostainer Plus). Using this protocol there is strong cytoplasmic and cell membrane staining.
Sections were rehydrated and antigen retrieved with the Dako 3 in 1 AR buffer citrate pH6.1 in a DAKO PT link. Slides were peroxidase blocked in 3% H2O2 in methanol for 10 mins. They were then blocked with Dako Protein block for 10 minutes (containing casein 0.25% in PBS) then incubated with primary antibody for 20 min and detected with Dako envision flex amplification kit for 30 minutes. Colorimetric detection was completed with Diaminobenzidine for 5 minutes. Slides were counterstained with Haematoxylin and coverslipped under DePeX. Please note that, for manual staining, optimization of primary antibody concentration and incubation time is recommended. Signal amplification may be required.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, L-arginine, and sodium azide (ab2810).

Overlay histogram showing THP1 cells stained with ab2810 (red line). The cells were fixed with 4% paraformaldehyde (10 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab2810, 1/100 dilution) for 30 min at 22°C. The secondary antibody used was DyLight^® 488 goat anti-mouse IgG (H+L) (ab96879) at 1/500 dilution for 30 min at 22°C. Isotype control antibody (black line) was mouse IgG1 [ICIGG1] (ab91353) used under the same conditions. Acquisition of >5,000 events was performed. This antibody gave a positive signal in THP1 cells fixed with methanol (5 min)/permeabilized in 0.1% PBS-Tween used under the same conditions.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, L-arginine, and sodium azide (ab2810).

IHC image of Rab9 staining in human normal tonsil FFPE section, performed on a BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab2810, 5µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, L-arginine, and sodium azide (ab2810).

All lanes : Anti-Rab9 antibody [Mab9] (ab2810) at 10 µg/ml

Lane 1 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate
Lane 2 : HEK293 (Human embryonic kidney cell line) Whole Cell Lysate
Lane 3 : Jurkat (Human T cell lymphoblast-like cell line) Whole Cell Lysate
Lane 4 : HepG2 (Human hepatocellular liver carcinoma cell line) Whole Cell Lysate
Lane 5 : K562 (Human erythromyeloblastoid leukemia cell line) Whole Cell Lysate

Lysates/proteins at 10 µg per lane.

Secondary
All lanes : Goat Anti-Mouse IgG H&L (HRP) preadsorbed (ab97040) at 1/5000 dilution

Developed using the ECL technique.

Performed under reducing conditions.

Predicted band size: 23 kDa
Observed band size: 22 kDa why is the actual band size different from the predicted?


Exposure time: 20 minutes

This data was developed using the same antibody clone in a different buffer formulation containing PBS, L-arginine, and sodium azide (ab2810).