All lanes : Anti-Calnexin antibody [CANX/1543] (ab238078) at 1 µg/ml

Lane 1 : Wild-type HEK-293T cell lysate
Lane 2 : CANX knockout HEK-293T cell lysate
Lane 3 : U-2 OS cell lysate
Lane 4 : MCF7 cell lysate

Lysates/proteins at 20 µg per lane.

Performed under reducing conditions.

Predicted band size: 68 kDa
Observed band size: 80 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 (ab238078).

Lanes 1 - 4: Merged signal (red and green). Green - ab238078 observed at 80 kDa. Red - loading control ab181602 (Rabbit Anti-GAPDH antibody [EPR16891]) observed at 37 kDa.

ab238078 was shown to react with Calnexin in wild-type HEK-293T cells in Western blot with loss of signal observed in CANX knockout cell line ab255368 (CANX knockout cell lysate ab263805). Wild-type HEK-293T and CANX knockout cell lysates were subjected to SDS-PAGE. Membranes were blocked in 3 % milk in TBS-T (0.1 % Tween^®) before incubation with ab238078 and ab181602 (Rabbit Anti-GAPDH antibody [EPR16891]) overnight at 4 °C at 1 µg/ml and a 1 in 20000 dilution respectively. Blots were incubated with Goat anti-Mouse IgG H&L (IRDye^® 800CW) preabsorbed (ab216772) and Goat anti-Rabbit IgG H&L (IRDye^® 680RD) preabsorbed (ab216777) secondary antibodies at 1 in 20000 dilution for 1 h at room temperature before imaging.

Formalin-fixed, paraffin-embedded human renal cell carcinoma tissue stained for Calnexin using ab237932 at 2 µg/ml in immunohistochemical analysis.

This data was produced with ab238078, the same antibody in a different formulation with BSA and Azide.
ab238078 was tested in protein array against over 19000 different full-length human proteins.
Z- and S- Score: The Z-score represents the strength of a signal that a monoclonal antibody (MAb) (in combination with a fluorescently-tagged anti-IgG secondary antibody) produces when binding to a particular protein on the HuProtTM array. Z-scores are described in units of standard deviations (SD's) above the mean value of all signals generated on that array. If targets on HuProtTM are arranged in descending order of the Z-score, the S-score is the difference (also in units of SD's) between the Z-score. S-score therefore represents the relative target specificity of a MAb to its intended target.
A MAb is specific to its intended target if the MAb has an S-score of at least 2.5. For example, if a MAb binds to protein X with a Z-score of 43 and to protein Y with a Z-score of 14, then the S-score for the binding of that MAb to protein X is equal to 29.

All lanes : Anti-Calnexin antibody [CANX/1543] - BSA and Azide free (ab237932) at 2 µg/ml

Lane 1 : PANC-1 (human pancreatic epithelial cancinoma cell line) cell lysate
Lane 2 : MCF7 (human breast adenocarcinoma cell line) cell lysate

Predicted band size: 68 kDa

Anti-Calnexin antibody [CANX/1543] - BSA and Azide free (ab237932) at 2 µg/ml + Human kidney lysate

Predicted band size: 68 kDa