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° | ShowTrace | - | Show trace through atoms |
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| | | Command | | Argument | | Datatype | | Default | | Min | | Max | |
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| Format: | | ShowTrace | Atom selection | | SELECTION | | - |
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| Python: | | ShowTrace(selection1) |
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| Menu: | | View > Show atom trace | | ||||||||||
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| Related: | | HideTrace | | ||||||||||
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| Required: | |  | |
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The ShowTrace
command sequentially connects the selected atoms with a trace, the most prominent example being a trace of Calpha carbons.
A trace is automatically interrupted at molecule boundaries or if two atoms are not connected via one or more covalent bonds. To prevent the trace from bridging gaps in a peptide chain,
one thus needs to delete the unusually long peptide bonds: DelBond all,all,LenMin=
3
It is still possible to change the style of the traced atoms
(Ball,BallStick
,Stick) and often helpful to
hide non-traced atoms.
Example 1:
ShowTrace CA Obj 1
Show a CA-trace for object 1.
Example 2:
ShowTrace CA Protein
Show a CA-trace for all proteins.
Example 3:
ShowTrace C1* NucAcid
Show a trace through the C1* carbons in all nucleic acids.
Example macro:
# EXAMPLE ShowTrace Clear LoadPDB 5tim # Easier alternative: Style Trace, StickAll Style Stick StickRadius 100 BallRadius 60 HideAtom !CA ShowTraceAtom CA ColorAtom CA,Blue,Cyan PosObj 5tim,Z=70 OriObj 5tim,-80,320,-73
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| Figure: Result of the example macro above. |