This pathway visualises the Moco biosynthesis, which is used as a cofactor for several enzymes.
Several diseases (MoCD type A, B and C) are clinically very similar to sulphite oxidase (SO) deficiency (see [https://www.wikipathways.org/index.php/Pathway:WP4504] for the pathway related to SO-deficiency).
This pathway was inspired by Chapter 12 of the book of Blau (ISBN 3642403360 (978-3642403361)).