From f34627338e22e5828c33724a4215bb1bde9a6679 Mon Sep 17 00:00:00 2001
From: Nathalie Bechon <bechon27@gmail.com>
Date: Fri, 8 Dec 2023 17:15:32 +0100
Subject: [PATCH] Update abib.md
---
content/3.defense-systems/abib.md | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/content/3.defense-systems/abib.md b/content/3.defense-systems/abib.md
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--- a/content/3.defense-systems/abib.md
+++ b/content/3.defense-systems/abib.md
@@ -9,12 +9,24 @@ tableColumns:
Sensor: Unknown
Activator: Unknown
Effector: Unknown
+contributors:
+ - Nathalie Bechon
relevantAbstracts:
- doi: 10.1023/A:1002027321171
- doi: 10.1016/j.mib.2005.06.006
+ - doi: 10.1128/aem.57.12.3547-3551.1991
+ - doi: 10.1046/j.1365-2958.1996.371896.x
---
# AbiB
+
+## Description
+AbiB is a single-protein abortive infection defense system from *Lactococcus* that degrades mRNA.
+
+## Molecular mechanism
+AbiB system is still poorly understood. It is a single-protein system that was described as an abortive infection system. Upon phage infection, AbiB activation leads to a strong degradation of mRNAs:ref{doi=10.1046/j.1365-2958.1996.371896.x} that is expected to be the mechanism of phage inhibition. AbiB expression is constitutive and does increase during phage infection. It is only activated during phage infection, most likely through the recognition of an early phage protein. Which protein, and whether this activation is direct or indirect remains to be elucidated.
+
+## Example of genomic structure
The AbiB system is composed of one protein: AbiB.
Here is an example found in the RefSeq database:
--
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