PPM1B utilizes a trinuclear metal architecture for phosphatase activity
Reece P. Stevens, Viktoriya Solodushko, Andrzej Wierzbicki, Thomas C. Rich, Mikael F Alexeyev, Marlo K. Thompson, Madeline Stone, Camryn Hall, A. Deweever, Sarah Sayner, Troy Stevens, Joel Andrews, Aishwarya Prakash, Richard E. Honkanen, Ji Young Lee, , Mark R. Swingle
This study identifies a trinuclear metal center in PPM1B that facilitates phosphate hydrolysis through direct substrate coordination and water protonation, revealing a novel catalytic mechanism.
bioRxiv · Apr 27, 2026 · PreprintBiochemistry