diff --git a/mite_data/data/MITE9999999.json b/mite_data/data/MITE9999999.json
new file mode 100644
index 00000000..3ae8bde2
--- /dev/null
+++ b/mite_data/data/MITE9999999.json
@@ -0,0 +1,67 @@
+{
+    "accession": "MITE9999999",
+    "status": "active",
+    "comment": "epoxidation and hydroxylation of a macrolide FD-891 in a stepwise manner",
+    "changelog": [
+        {
+            "version": "1",
+            "date": "2026-07-14",
+            "contributors": [
+                "0000-0003-3002-6458"
+            ],
+            "reviewers": [
+                "0000-0002-4540-6501"
+            ],
+            "comment": "Changed Description"
+        }
+    ],
+    "enzyme": {
+        "name": "gfsF",
+        "description": "Cytochrome P450",
+        "references": [
+            "doi:10.1002/cbic.201000214"
+        ],
+        "databaseIds": {
+            "uniprot": "E0D207",
+            "genpept": "BAJ16472.1",
+            "mibig": "BGC0000058"
+        },
+        "cofactors": {
+            "organic": [
+                "Heme"
+            ],
+            "inorganic": [
+                "Fe"
+            ]
+        }
+    },
+    "reactions": [
+        {
+            "tailoring": [
+                "Hydroxylation",
+                "Monooxygenation",
+                "Other"
+            ],
+            "description": "GfsF catalyzes both epoxidation and hydroxylation as a dual functional P450 monooxygenase in the biosynthesis of FD-891",
+            "reactionSMARTS": "[C:1]1=[C:10]-[C@@:11](/[O:32])-[C@:12](\\[C:35])-[C:13]=[C:14](-[C:34])-[C:15]=[C:16](-[C:33])-[C:17](-[O:28]\\[C@:7](-[C@@:8](\\[C:36])-[C:9]/[C:18]=[C:19]/[C:20]-[C@@:21](\\[O:31])-[C@@:22](\\[C:39])-[C@@:23](/[O:30])-[C@:24](/[C:38])-[C@@:25](/[O:29]-[C:37])-[C:26])-[C:6]-[C:5]=[C:4]-[C:3]-[C:2]-1)=[O:27]>>[C@:1]12[O][C@@:10]1[C@@:11](/[O:32])[C@:12](\\[C:35])[C:13]=[C:14](-[C:34])[C:15]=[C:16](-[C:33])[C:17](-[O:28]\\[C@:7](-[C@@:8](\\[C:36])-[C:9]/[C:18]=[C:19]/[C:20]-[C@@:21](\\[O:31])-[C@@:22](\\[C:39])-[C@@:23](/[O:30])-[C@:24](/[C:38])-[C@@:25](/[O:29]-[C:37])-[C:26])-[C:6]-[C:5]=[C:4]-[C:3]-[C@@:2]2[O])=[O:27]",
+            "reactions": [
+                {
+                    "substrate": "CO[C@@H](C)[C@@H](C)[C@H](O)[C@H](C)[C@@H](O)C/C=C/C[C@H](C)[C@@H]1C/C=C/CC/C=C/[C@@H](O)[C@H](C)/C=C(C)\\C=C(\\C)C(=O)O1",
+                    "products": [
+                        "CO[C@@H](C)[C@@H](C)[C@H](O)[C@H](C)[C@@H](O)C/C=C/C[C@H](C)[C@@H]1CC=CC[C@@H](O)[C@@H]2O[C@H]2[C@@H](O)[C@H](C)C=C(C)C=C(C)C(=O)O1"
+                    ],
+                    "isIntermediate": true
+                }
+            ],
+            "evidence": {
+                "evidenceCode": [
+                    "In vitro assay",
+                    "Knock-out studies"
+                ],
+                "references": [
+                    "doi:10.1002/cbic.201000214"
+                ]
+            }
+        }
+    ]
+}
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