Special nodes and R-groups

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Special nodes

Name

Description

Homology groups

The drop-down list contains the default homology groups.

Pol

Pseudo atom 'Pol'. This button changes the selected atom to a pseudo atom labelled Pol (polymer).

*

This button creates a '*' atom, which indicates an unspecified end group in polymers.

R-groups

These atoms can be used to describe unknown or unspecified molecule parts or to draw R-group queries or Markush structures.