diff --git a/content/3.defense-systems/tiamat.md b/content/3.defense-systems/tiamat.md
index 5728b62d2fa4d3eeb881d9945d6f2be56f2d4786..006b2adbe0bfec799be6c3c2fd79933c2ccb2249 100644
--- a/content/3.defense-systems/tiamat.md
+++ b/content/3.defense-systems/tiamat.md
@@ -10,9 +10,23 @@ tableColumns:
     Activator: Unknown
     Effector: Unknown
     PFAM: PF00656, PF13020
+contributors: 
+  - Helena Shomar, Marie Guillaume
+relevantAbstracts:
+  - doi: 10.1016/j.chom.2022.09.017
+
 ---
 
 # Tiamat
+
+## Description
+This defense system is composed of one gene refered to as TmtA.
+This systems is widespread across diverse prokaryotic phyla, and was experimentally validated in _Escherichia coli_ (confers protection against phages T6 and T5).
+
+## Molecular mechanism
+
+To our knowledge the molecular mechanism is unknown. Please update.
+
 ## Example of genomic structure
 
 The Tiamat system is composed of one protein: TmtA_2599863134.
@@ -69,13 +83,6 @@ end
     style Title3 fill:none,stroke:none,stroke-width:none
     style Title4 fill:none,stroke:none,stroke-width:none
 </mermaid>
-## Relevant abstracts
-
-::relevant-abstracts
----
-items:
-    - doi: 10.1016/j.chom.2022.09.017
 
 ---
-::