diff --git a/README.md b/README.md
index 29ca7d1e0b777f9a40bcc6134a8c9c18252ee0c1..faed4ab2bd69a3ae0933b26a1d7a89a356d839f8 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,8 @@ This ARC contains three different studies, each detailing specific aspects of sa
 
 [3_ReporterStrainGeneration](https://git.nfdi4plants.org/sfb1535_mibinet/2025_IronAndHemeRegulatoryNetworks/-/tree/main/studies/3_ReporterStrainGeneration?ref_type=heads): Cloning procedure and strain generation for reporter strains. 
 
+[4_InVitroBindingOfDtxR](https://git.nfdi4plants.org/sfb1535_mibinet/2025_IronAndHemeRegulatoryNetworks/-/tree/main/studies/4_InVitroBindingOfDtxR?ref_type=heads): DNA preparation and protein purification for Electron Mobility Shift Assay. 
+
 Detailed metadata description can be found in the corresponding `isa.study` files. 
 
 
@@ -48,6 +50,8 @@ The [Assays](https://git.nfdi4plants.org/sfb1535_mibinet/2025_IronAndHemeRegulat
 
 [3_ReporterAssays](https://git.nfdi4plants.org/sfb1535_mibinet/2025_IronAndHemeRegulatoryNetworks/-/tree/main/assays/3_ReporterAssays?ref_type=heads): BioLector data of the reporter strains.  
 
+[4_ElectronMobilityShiftAssays_DtxR](https://git.nfdi4plants.org/sfb1535_mibinet/2025_IronAndHemeRegulatoryNetworks/-/tree/main/assays/4_ElectronMobilityShiftAssays_DtxR?ref_type=heads): Gel pictures of assay. 
+
 Detailed metadata description can be found in the corresponding `isa.assay` files.