Tagg: Aggregation Onset Temperature


Aggregation Onset Temperature (Tagg)

°C (Celsius)

Light Scattering , Fluorescence Intensity


30-90 °C with 2.0 °C/min increments


0.1 mg/mL

266 nm


Intrinsic protein fluorescence (266-nm excitation, 280- to 450-nm emission scan) and static light scattering (SLS) at 266 and 473 nm, were measured simultaneously with a UNit (Unchained Laboratories) at every 1 °C for 30–90 °C after 30-s equilibration at each temperature. Microcuvettes were loaded with 9 µL of 0.1 mg/mL samples in triplicate. Tagg was determined from SLS counts at 266 nm using the instrument software.