BtuJ1, a novel surface-exposed B12-binding protein in Bacteroidetes, functions as an extracellular vitamin reservoir that enhances fitness.
Javier Abellón‐Ruiz, Raúl Pacheco‐Gómez, Jessica Watts, Adam J. Hart, Robert H. Hirt, Arnaud Baslé, Bert van den Berg
This study identifies BtuJ1 as a B12-binding lipoprotein in Bacteroides thetaiotaomicron that functions as an extracellular vitamin reservoir, enhancing bacterial fitness in B12-limited environments.
bioRxiv · Jul 1, 2025 · PreprintMicrobiology