In the structure of the
vitamin folic acid,
6-methylpterin is linked through
the amino group of p-aminobenzoic acid (PABA)
to form pteroic acid, which is linked in turn via an amide
to glutamate, to form pteroylmonoglutamate.
In the structure of the
vitamin folic acid,
6-methylpterin is linked through
the amino group of p-aminobenzoic acid (PABA)
to form pteroic acid, which is linked in turn via an amide
to glutamate, to form pteroylmonoglutamate.