What can the membrane reveal when an antibody underperforms?

An underperforming antibody can turn a Western blot into background and uncertainty. This study compares VerdiBlot and nitrocellulose for pMLC and MLC detection in mouse liver lysate, then tests fluorescent multiplexing.

When an antibody underperforms, adding more exposure can make the background louder without making the answer clearer.

This application note compares VerdiBlot and nitrocellulose in a fluorescence-based Western blot using whole mouse liver lysate and an underperforming antibody against myosin light chain.

The study examined:

• phosphorylated myosin light chain, followed by MLC after stripping
• GAPDH as a reference target
• fluorescent background and band clarity
• E-cadherin and desmin in a two-target multiplex assay
• membrane performance after stripping and reprobing

Both membranes received the same 30 µg load per lane and were processed with the same antibody dilutions and detection workflow.

Under the tested conditions, VerdiBlot showed clearly resolved pMLC and MLC bands with substantially lower background. The multiplex experiment also produced distinct E-cadherin and desmin signals on the same membrane.

The application note is relevant if you work with low-abundance proteins, phosphorylation, whole-tissue lysates or antibodies that produce weak signal relative to background. It includes the experimental protocol and original fluorescence images for direct review.

Read the complete application note:
https://www.verdiblot.com/_files/ugd/de6bd3_dd6a21d6d099453ab1f019d69a752eca.pdf