diff --git a/crystal_toolkit/components/structure.py b/crystal_toolkit/components/structure.py
index 459e024d..2f761e31 100644
--- a/crystal_toolkit/components/structure.py
+++ b/crystal_toolkit/components/structure.py
@@ -25,7 +25,7 @@
 from crystal_toolkit.core.legend import Legend
 from crystal_toolkit.core.mpcomponent import MPComponent
 from crystal_toolkit.core.scene import Scene
-from crystal_toolkit.helpers.layouts import H2, Field, dcc, html
+from crystal_toolkit.helpers.layouts import H2, Field, Loading, dcc, html
 from crystal_toolkit.settings import SETTINGS
 
 # TODO: make dangling bonds "stubs"? (fixed length)
@@ -887,7 +887,7 @@ def _sub_layouts(self) -> dict[str, Component]:
         )
 
         return {
-            "struct": struct_layout,
+            "struct": Loading(struct_layout),
             "options": options_layout,
             "title": title_layout,
             "legend": legend_layout,