Qualitative Western Blot: Total Protein and Targets Steps

The information below explains the purpose of each step in the Experiment workflow (called a "page") and provides instructions and tips for completing each page.

Name

To help with record-keeping, give every Experiment a distinct name. The description field provides space for you to include important details about the Experiment.

Set up images

Ensure the correct images have been chosen, then enter information for the proteins being analyzed. If you have detected more than one protein in a channel, click to add information for an additional protein.

The total protein stain image should be in the section of the page labeled Control Image. Be sure to choose the total protein stain image when the Image Gallery button is underneath Control Image on the "Start Qualitative Analysis: Compare to Total Protein" starting page.

Click the zoom buttons above the image to make the displayed image smaller or larger . A zoom level, shown as a percentage relative to the size of the software window, is shown next to the zoom buttons.

Define lanes

The Define lanes page identifies lanes on the image for analysis. To find lanes, draw a boundary that encloses all the lanes on the image.

By default, Auto mode automatically performs lane finding. Manual mode is also available.

Specify replicate lanes

The Specify replicate lanes page allows you to link replicate lanes for analysis. The numbered rectangles displayed on the page correspond to the lanes on your blot.

Add lane details

Record important details about your samples.

Assign MW marker

Assign a molecular weight marker to estimate the molecular weight of bands. Estimated molecular weights will be available in the Analysis Table.

Quantify lanes

The lane rectangles on this page are created based on the lanes defined on the Define lanes page. The quantification value for lanes can be viewed in the Analysis Table on this page. If lanes were defined using Manual mode, the size and placement of lane rectangles can be adjusted if necessary.

Define lanes

  • If Auto mode was used to define lanes, the boundary can be adjusted if necessary.
  • If Manual mode was used to define lanes, the size and placement of lane rectangles can be adjusted if necessary.

Review lane details

Use this page to double check the lane details. If you need to make a change, return to the Add lane details page.

Assign MW marker

Assign a molecular weight marker to estimate the molecular weight of bands. Estimated molecular weights will be available in the Analysis Table of the Quantify bands page.

You can estimate the molecular weight of target bands in one channel using a marker in another channel when you link a Band Channel to a Marker Channel.

Quantify bands

Click Find Bands or Add to quantify bands. Bands enclosed by shapes will be quantified.

The Next button will not be active until you have identified a band in each lane for at least one of the proteins (excluding lanes that you marked as Not Used or MW Marker on the Add lane details page).

Set up chart

Graph the Lane Amount (entered on the Add lane details page) against Lane and Band Signal on this page.

Select Include Total Lane Signal in chart to include the Lane Signal in the chart along with Band signals.

Edit Chart Selection

Click Edit Chart Selection to choose which lanes and which bands to include in the chart.

Review and report

The Review and report page allows you to export a PDF file containing the data and image from the validation or export the image and data table individually.

The data in the report is organized into sections. Click to expand a section to view data and export options.

Done

Click Done to mark this Experiment as complete and return to the Experiment List.