Update app.py

app.py

@@ -492,7 +492,7 @@ def main():
         for struct in ref_structure_data:
             num_res = struct['num_residues']
             if num_res > 4:
-                auto_selection = list(range(1, num_res - 1))
+                auto_selection = list(range(2, num_res - 2))
                 st.session_state['ref_selections'][struct['name']] = auto_selection
             else:
                 st.session_state['ref_selections'][struct['name']] = list(range(num_res))
@@ -502,7 +502,7 @@ def main():
         for struct in query_structure_data:
             num_res = struct['num_residues']
             if num_res > 4:
-                auto_selection = list(range(1, num_res - 1))
+                auto_selection = list(range(2, num_res - 2))
                 st.session_state['query_selections'][struct['name']] = auto_selection
             else:
                 st.session_state['query_selections'][struct['name']] = list(range(num_res))