diff --git a/src/mol-plugin-ui/structure/superposition.tsx b/src/mol-plugin-ui/structure/superposition.tsx
index 1de0162beed0cdfafdc23c7e418624db5242d78e..dc59353b887950753d040b96683d054dc247790d 100644
--- a/src/mol-plugin-ui/structure/superposition.tsx
+++ b/src/mol-plugin-ui/structure/superposition.tsx
@@ -5,26 +5,26 @@
  * @author Sebastian Bittrich <sebastian.bittrich@rcsb.org>
  */
 
-import { CollapsableControls, PurePluginUIComponent } from '../base';
-import { Icon, ArrowUpwardSvg, ArrowDownwardSvg, DeleteOutlinedSvg, HelpOutlineSvg, TuneSvg, SuperposeAtomsSvg, SuperposeChainsSvg, SuperpositionSvg } from '../controls/icons';
-import { Button, ToggleButton, IconButton } from '../controls/common';
-import { StructureElement, StructureSelection, QueryContext, Structure, StructureProperties } from '../../mol-model/structure';
+import { SymmetryOperator } from '../../mol-math/geometry';
 import { Mat4 } from '../../mol-math/linear-algebra';
-import { ParamDefinition as PD } from '../../mol-util/param-definition';
-import { StateObjectRef, StateObjectCell, StateSelection } from '../../mol-state';
-import { StateTransforms } from '../../mol-plugin-state/transforms';
-import { PluginStateObject } from '../../mol-plugin-state/objects';
+import { SIFTSMapping } from '../../mol-model-props/sequence/sifts-mapping';
+import { QueryContext, Structure, StructureElement, StructureProperties, StructureSelection } from '../../mol-model/structure';
 import { alignAndSuperpose, superpose } from '../../mol-model/structure/structure/util/superposition';
+import { alignAndSuperposeWithSIFTSMapping } from '../../mol-model/structure/structure/util/superposition-sifts-mapping';
 import { StructureSelectionQueries } from '../../mol-plugin-state/helpers/structure-selection-query';
-import { structureElementStatsLabel, elementLabel } from '../../mol-theme/label';
-import { ParameterControls } from '../controls/parameters';
-import { stripTags } from '../../mol-util/string';
 import { StructureSelectionHistoryEntry } from '../../mol-plugin-state/manager/structure/selection';
-import { ToggleSelectionModeButton } from './selection';
-import { alignAndSuperposeWithSIFTSMapping } from '../../mol-model/structure/structure/util/superposition-sifts-mapping';
+import { PluginStateObject } from '../../mol-plugin-state/objects';
+import { StateTransforms } from '../../mol-plugin-state/transforms';
 import { PluginCommands } from '../../mol-plugin/commands';
-import { SIFTSMapping } from '../../mol-model-props/sequence/sifts-mapping';
-import { SymmetryOperator } from '../../mol-math/geometry';
+import { StateObjectCell, StateObjectRef } from '../../mol-state';
+import { elementLabel, structureElementStatsLabel } from '../../mol-theme/label';
+import { ParamDefinition as PD } from '../../mol-util/param-definition';
+import { stripTags } from '../../mol-util/string';
+import { CollapsableControls, PurePluginUIComponent } from '../base';
+import { Button, IconButton, ToggleButton } from '../controls/common';
+import { ArrowDownwardSvg, ArrowUpwardSvg, DeleteOutlinedSvg, HelpOutlineSvg, Icon, SuperposeAtomsSvg, SuperposeChainsSvg, SuperpositionSvg, TuneSvg } from '../controls/icons';
+import { ParameterControls } from '../controls/parameters';
+import { ToggleSelectionModeButton } from './selection';
 
 export class StructureSuperpositionControls extends CollapsableControls {
     defaultState() {