Update borvo.md. Corrected the structure and filled the section description...

Update borvo.md. Corrected the structure and filled the section description and molecular mechanisms.

content/3.defense-systems/borvo.md

@@ -10,9 +10,23 @@ tableColumns:
     Activator: Unknown
     Effector: Unknown
     PFAM: PF12770
+
+contributors:
+    - Héloïse Georjon
+
+relevantAbstracts:
+    - doi: 10.1016/j.chom.2022.09.017
+    - doi: 10.1016/j.cell.2023.02.029    
 ---
 
 # Borvo
+
+## Description
+Borvo is a single-gene anti-phage system that was identify through bioinformatic prediction and experimental validation :ref{10.1016/j.chom.2022.09.017}.
+
+## Molecular mechanisms
+Mutations in the phage DNA polymerase can allow phages to escape Borvo defense, indicating that it could be the trigger of the system :ref{10.1016/j.cell.2023.02.029}.Borvo is a suspected abortive infection :ref{10.1016/j.cell.2023.02.029}. However as far as we are aware, the precise molecular mechanism of Borvo is unknown.
+
 ## Example of genomic structure
 
 The Borvo system is composed of one protein: BovA.
@@ -71,13 +85,4 @@ 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
-
----
-::