Introduction

The Sliced View tab displays an alternative view of items selected in the Main View. It displays the same data as in the Main View but deletes some of the intronic "space" within gene models.

It is mainly useful in depicting mammalian genes which often span many kilobases and mostly consist of intronic sequence.

The following image shows how this works. The top panel of the IGB Main View window shows the normal, non-spliced view of a region containing overlapping genes from a human, AGBL4 which contains several very large introns, one of which completely encompasses another gene, BEND5. The Sliced View panel on the bottom shows AGBL4, and then BEND5, but with the gaps between exons reduced to 100bp.

Black has marks in the Sliced View coordinate axis indicate points where sequence was deleted from between the exons. Note how the Sliced View makes understanding and visualizing the exons easier than in the Main View, where exons are dwarfed by the much larger intronic regions.

Sliced view example (click to enlarge)

Sliced view example (click to enlarge)