diff --git a/Tetrasome124_trj_preview.md b/Tetrasome124_trj_preview.md
index 8581d74..06ce714 100644
--- a/Tetrasome124_trj_preview.md
+++ b/Tetrasome124_trj_preview.md
@@ -1,4 +1,4 @@
-### TETR124, merged - tetrasome with 124 bp pseudosymmetric α-satellite DNA, full length histone tails, merged simulation runs (PDB ID 1KX5)
+### TETR124, 1 - tetrasome with 124 bp pseudosymmetric α-satellite DNA, full length histone tails, merged simulation runs (PDB ID 1KX5)
[Back](http://intbio.github.io/Tetrasome_MD_2024/)