Azotobacter vinelandii glutaredoxin D delivers the core [Fe2S2] cluster to nitrogenase cofactor scaffold protein NifU - Juan Andrés Collantes-García; Elena Rosa-Núñez; Alejandro M. Armas; Daniel Raimunda; Ana Pérez-González; Yisong Guo; Carlos Echávarri-Erasun; Luis M. Rubio; Manuel González-Guerrero (Journal of Biological Chemistry, 2026)