The 6 papers which experimentally show that the PCTFP (Hir1-Hir2) has physical interaction

Experimental System Publication Throughput
Affinity Capture-Western DeSilva H (1998) Low Throughput
Affinity Capture-Western Spector MS (1997) Low Throughput
Affinity Capture-MS Prochasson P (2005) Low Throughput
Affinity Capture-MS Prochasson P (2005) Low Throughput
Affinity Capture-Western Vishnoi N (2011) Low Throughput
Affinity Capture-Western Vishnoi N (2011) Low Throughput

The 2 papers which experimentally show that the PCTFP (Hir1-Hir2) has genetic interaction

Experimental System Publication Throughput
Synthetic Growth Defect Kaufman PD (1998) Low Throughput
Positive Genetic Bandyopadhyay S (2010) High Throughput