Reaction: ATP + 7,8-dihydropteroate + L-glutamate = ADP + phosphate + 7,8-dihydropteroylglutamate
For diagram of reaction click here.
Other name(s): dihydrofolate synthetase; 7,8-dihydrofolate synthetase; H2-folate synthetase; 7,8-dihydropteroate:L-glutamate ligase (ADP); dihydropteroate:L-glutamate ligase (ADP-forming); DHFS
Systematic name: 7,8-dihydropteroate:L-glutamate ligase (ADP-forming)
Comments: In some bacteria, a single protein catalyses both this activity and that of EC 18.104.22.168, tetrahydrofolate synthase , the combined activity of which leads to the formation of the coenzyme polyglutamated tetrahydropteroate (H4PteGlun), i.e. various tetrahydrofolates. In contrast, the activities are located on separate proteins in most eukaryotes studied to date . This enzyme is reponsible for attaching the first glutamate residue to dihydropteroate to form dihydrofolate and is present only in those organisms that have the ability to synthesize tetrahydrofolate de novo, e.g. plants, most bacteria, fungi and protozoa .
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 37318-62-0
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