Built as the Biomolecular Interactions Core Facility with joint DST-FIST and IISER Kolkata funding, this facility supports studies of protein–protein, protein–nucleic acid and protein–small-molecule interactions. Instrumentation includes a Biacore T200 Surface Plasmon Resonance system, a MicroCal PEAQ-ITC isothermal titration calorimeter, two HPLC systems (Waters & Thermo Fisher UltiMate 3000), a Bio-Logic stopped-flow spectrophotometer, a J-1500 circular dichroism spectrophotometer, a Cytation 5 cell-imaging multimode reader, a Horiba Duetta UV-Vis/fluorescence spectrometer, an Elementar UNICUBE CHN analyser, and a Malvern NanoSight Pro for nanoparticle tracking — housed in a temperature- and humidity-controlled room on UPS-backed, filtered power.