T010: Update PDB query field URLs

teachopencadd/talktorials/T010_binding_site_comparison/talktorial.ipynb

@@ -416,7 +416,7 @@
     "- Structure has a resolution less or equal to $3.0$\n",
     "- Structure has only one chain (for simplicity)\n",
     "\n",
-    "Each structure in the PDB database is linked to many different fields to hold meta information such as our defined criteria. Check out the [complete list of available fields](https://search.rcsb.org/search-attributes.html) and supported operators on the RCSB website. \n",
+    "Each structure in the PDB database is linked to many different fields to hold meta information such as our defined criteria. Check out the complete list of available fields for [chemicals](https://search.rcsb.org/chemical-search-attributes.html)/[structures](https://search.rcsb.org/structure-search-attributes.html) and supported operators on the RCSB website. \n",
     "\n",
     "The package `biotite` provides a very nice module `databases.rcsb` (see [docs](https://www.biotite-python.org/apidoc/biotite.database.rcsb.html)), which allows us to query one (`FieldQuery`, see [docs](https://www.biotite-python.org/apidoc/biotite.database.rcsb.FieldQuery.html#biotite.database.rcsb.FieldQuery)) or more (`CompositeQuery`, see [docs](https://www.biotite-python.org/apidoc/biotite.database.rcsb.CompositeQuery.html#biotite.database.rcsb.CompositeQuery)) of these fields to retrieve a count (`count`) or list (`search`) of PDB IDs that match our criteria. \n",
     "\n",
@@ -1872,7 +1872,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -1886,9 +1886,16 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.5"
-  },
-  "toc-autonumbering": true
+   "version": "3.9.6"
+  },
+  "toc-autonumbering": true,
+  "widgets": {
+   "application/vnd.jupyter.widget-state+json": {
+    "state": {},
+    "version_major": 2,
+    "version_minor": 0
+   }
+  }
  },
  "nbformat": 4,
  "nbformat_minor": 4