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Figure 1.
Figure 1. Reaction of MtdAMethylene-H[4]MPT (-H[4]F) is
oxidized to methenyl-H[4]MPT (-H[4]F) with NADP+ as cosubstrate.
H[4]MPT is composed of a 7-methyl-6-ethyl-pterin, an
aminobenzyl, a 1-desoxyribose, a ribose, a phosphate, and a
2-hydroxyglutarate moiety. H[4]F consists of a 6-methyl-pterin,
a p-aminobenzoate, and a glutamate moiety. The two methyl groups
painted in blue are only present in H[4]MPT. Methylene and
methenyl groups are indicated in red.
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