User guide

Membrane line
1. Select the membrane line tool from the BioDraw toolbar.
2. Click and drag to draw a membrane line of the size you want or click for the default size.
When orienting the membrane, note that you are constrained to 15 degree increments when fixed angles are applied
(go to Object>Fixed Angles). To override the constraint, press SHIFT key as you drag.
To resize the membrane units, click-drag the adjustment handle at the membrane center.
Tip: To change the length, select the membrane and drag the left or right handle of the selection box. You may
then deselect it and readjust the subunit size.
Membrane arc
To create a membrane arc, click and drag in a curve using the Membrane Arc tool in the BioDraw toolbar.
The tool has three adjustment handles:
the handle at the starting point controls the length.
the center handle controls the subunit size.
the handle at the leading edge controls the arc.
Helix proteins
To create a helix protein:
1. Select the Helix Protein tool from the BioDraw toolbar.
2. Drag in the document window or click to draw the default size.
When orienting the protein, note that you are constrained to 15 degree increments when fixed angles are applied (go to
Object>Fixed Angles). To override the constraint, press SHIFTkey as you drag.
ChemBioDraw 13.0
Chapter 4: BioDraw 55 of 401