Microtubule-associated protein involved in membrane protein-cytoskeleton interactions. Has also a catalytic activity and catalyzes two steps in the biosynthesis of the molybdenum cofactor. In the first step, molybdopterin is adenylated. Subsequently, molybdate is inserted into adenylated molybdopterin and AMP is released. ATP + H(+) + molybdopterin = adenylyl-molybdopterin + diphosphate adenylyl-molybdopterin + H(+) + molybdate = AMP + H2O + Mo-molybdopterin Cofactor biosynthesis; molybdopterin biosynthesis. Homotrimer, homodimer and homooligomer. In the N-terminal section; belongs to the MoaB/Mog family. In the C-terminal section; belongs to the MoeA family.