diff --git a/molecularnodes/__init__.py b/molecularnodes/__init__.py
index 7f182f77..3ac5213c 100644
--- a/molecularnodes/__init__.py
+++ b/molecularnodes/__init__.py
@@ -17,7 +17,7 @@
 from .io.parse.mda import _rejuvenate_universe, _sync_universe
 from .io.parse.star import _rehydrate_ensembles
 from .props import MolecularNodesObjectProperties
-from .ui.node_menu import MN_add_node_menu, draw_node_menus
+from .ui.node_menu import MN_add_node_menu, draw_node_menus, CLASSES
 from .ui.ops import ops_ui
 from .ui.panel import MN_PT_panel, change_style_menu, change_style_node_menu
 from .ui.pref import MN_OT_Install_Template
@@ -26,6 +26,7 @@
     ops_ui
     + ops_io
     + [MN_OT_Install_Template, MolecularNodesObjectProperties, MN_PT_panel]
+    + CLASSES
 )
 
 universe_funcs = [_sync_universe, _rejuvenate_universe]
diff --git a/molecularnodes/assets/MN_data_file_4.2.blend b/molecularnodes/assets/MN_data_file_4.2.blend
index e98b71f8..9ed9df03 100644
Binary files a/molecularnodes/assets/MN_data_file_4.2.blend and b/molecularnodes/assets/MN_data_file_4.2.blend differ
diff --git a/molecularnodes/ui/func.py b/molecularnodes/ui/func.py
index ee04447a..2b4fed01 100644
--- a/molecularnodes/ui/func.py
+++ b/molecularnodes/ui/func.py
@@ -9,6 +9,7 @@ def build_menu(layout, items):
             layout.separator()
         elif item["label"] == "custom":
             for button in item["values"]:
+                print(f"{button=}")
                 item["function"](
                     layout,
                     label=button["label"],
diff --git a/molecularnodes/ui/node_menu.py b/molecularnodes/ui/node_menu.py
index 7530fa67..2f1b47d2 100644
--- a/molecularnodes/ui/node_menu.py
+++ b/molecularnodes/ui/node_menu.py
@@ -135,3 +135,19 @@ def MN_add_node_menu(self, context):
     if "GeometryNodeTree" == bpy.context.area.spaces[0].tree_type:
         layout = self.layout
         layout.menu("MN_MT_NODE", text="Molecular Nodes", icon_value=88)
+
+
+CLASSES = [
+    MN_MT_Node,
+    MN_MT_Node_Animate,
+    MN_MT_Node_Assembly,
+    MN_MT_Node_Bonds,
+    MN_MT_Node_CellPack,
+    MN_MT_Node_Color,
+    MN_MT_Node_Density,
+    MN_MT_Node_DNA,
+    MN_MT_Node_Style,
+    MN_MT_Node_Select,
+    MN_MT_Node_Topology,
+    MN_MT_Node_Utils,
+]
diff --git a/molecularnodes/ui/ops.py b/molecularnodes/ui/ops.py
index 28c9c5bb..ca119604 100644
--- a/molecularnodes/ui/ops.py
+++ b/molecularnodes/ui/ops.py
@@ -170,4 +170,6 @@ def execute(self, context):
     MN_OT_Add_Custom_Node_Group,
     MN_OT_Residues_Selection_Custom,
     MN_OT_Change_Style,
+    MN_OT_Assembly_Bio,
+    MN_OT_iswitch_custom,
 ]
diff --git a/tests/test_nodes.py b/tests/test_nodes.py
index 25b0b83f..d127a0db 100644
--- a/tests/test_nodes.py
+++ b/tests/test_nodes.py
@@ -243,13 +243,13 @@ def test_node_topology(snapshot_custom: NumpySnapshotExtension):
     for node_name in node_names:
         # exclude these particular nodes, as they aren't field nodes and so we shouldn't
         # be testing them here. Will create their own particular tests later
-        if "backbone" in node_name or "bonds" in node_name:
+        if "Backbone" in node_name or "Bonds" in node_name:
             continue
         node_topo = nodes.add_custom(
             group, node_name, location=[x - 300 for x in node_att.location]
         )
 
-        if node_name == "MN_topo_point_mask":
+        if node_name == "Point Group Mask":
             node_topo.inputs["atom_name"].default_value = 61
 
         type_to_data_type = {
@@ -294,7 +294,7 @@ def test_compute_backbone(snapshot_custom: NumpySnapshotExtension):
             group, node_name, location=[x - 300 for x in node_att.location]
         )
 
-        if node_name == "MN_topo_point_mask":
+        if node_name == "Point Group Mask":
             node_topo.inputs["atom_name"].default_value = 61
 
         type_to_data_type = {