diff --git a/src/mol-plugin/util/structure-selection-helper.ts b/src/mol-plugin/util/structure-selection-helper.ts
index db342c603b2ab8c5f4ec92e68c4ebb05518bced1..a3416b0e4b812902e75d52d3f77586c7516018f4 100644
--- a/src/mol-plugin/util/structure-selection-helper.ts
+++ b/src/mol-plugin/util/structure-selection-helper.ts
@@ -132,6 +132,7 @@ const ligandPlusConnected = MS.struct.modifier.union([
 
 const modified = MS.struct.modifier.union([
     MS.struct.generator.atomGroups({
+        'chain-test': MS.core.rel.eq([MS.ammp('objectPrimitive'), 'atomistic']),
         'residue-test': MS.ammp('isModified')
     })
 ])