I think what you mean is the MUC1-20 (ish, numbering is a bit sloppy but hopefully we can clean it up in near future) genes encode for mucins, that are synthesised on a ribosome, threaded into ER, shuffled off into the Golgi and then enzymatically modified by the enzymes encoded by the genes GALNT2, 7 & 10 (at least).
There are a further 20-30 ish enzymes that can modify the mucins as they are traversing the Golgi, and depending on the cell type, it can get packaged into vesicles (alongside calcium) for secretion.
So, they meet a lot of enzymes along the way, but harbour no catalytic activity themselves (as far as we know!).
There are a further 20-30 ish enzymes that can modify the mucins as they are traversing the Golgi, and depending on the cell type, it can get packaged into vesicles (alongside calcium) for secretion.
So, they meet a lot of enzymes along the way, but harbour no catalytic activity themselves (as far as we know!).