diff --git a/content/3.defense-systems/rst_rt-nitrilase-tm.md b/content/3.defense-systems/rst_rt-nitrilase-tm.md
index f5d0b6866e63fe5adfde2dc786d4244c56b7d52d..ed9241d46557a261a57c00020632a38383e9c108 100644
--- a/content/3.defense-systems/rst_rt-nitrilase-tm.md
+++ b/content/3.defense-systems/rst_rt-nitrilase-tm.md
@@ -20,7 +20,7 @@ relevantAbstracts:
 # RT-nitrilase-Tm
 
 ## Description
-RT-nitrilase-Tm (also named UG5-large) is a two genes defense system. It was discovered from P4-like satellites in *E. coli* genomes :ref{doi=10.1016/j.chom.2022.02.01} :ref{10.1093/nar/gkac467}. Its antiphage activity was shown in *E. coli* against phage AL505_P2 (Myoviridae). 
+RT-nitrilase-Tm (also named UG5-large) is a two genes defense system. It was discovered from P4-like satellites in *E. coli* genomes :ref{doi=10.1016/j.chom.2022.02.01} :ref{doi=10.1093/nar/gkac467}. Its antiphage activity was shown in *E. coli* against phage AL505_P2 (Myoviridae). 
 
 The first protein is a reverse transcriptase (RT) fussed with C-N hydrolase domain (nitrilase) ; the second protein is transmembrane protein :ref{doi=10.1093/nar/gkac467}.