10-Formyltetrahydrofolate

10-Formyltetrahydrofolate

Names
IUPAC names (2S)-2-{[4-[(2-amino-4-oxo-5,6,7,8-tetrahydro-1H-pteridin-6-yl) methyl(formyl)amino]benzoyl]amino}pentanedioic acid
Other names 10-CHO-THF
Identifiers
CAS Number	2800-34-2
ChemSpider	9
Jmol interactive 3D	Image Image
MeSH	10-formyl-tetrahydrofolate
PubChem	10
InChI InChI=1S/C20H23N7O7/c21-20-25-16-15(18(32)26-20)23-11(7-22-16)8-27(9-28)12-3-1-10(2-4-12)17(31)24-13(19(33)34)5-6-14(29)30/h1-4,9,11,13,23H,5-8H2,(H,24,31)(H,29,30)(H,33,34)(H4,21,22,25,26,32) Key: AUFGTPPARQZWDO-UHFFFAOYSA-N InChI=1/C20H23N7O7/c21-20-25-16-15(18(32)26-20)23-11(7-22-16)8-27(9-28)12-3-1-10(2-4-12)17(31)24-13(19(33)34)5-6-14(29)30/h1-4,9,11,13,23H,5-8H2,(H,24,31)(H,29,30)(H,33,34)(H4,21,22,25,26,32) Key: AUFGTPPARQZWDO-UHFFFAOYAK
SMILES C1C(NC2=C(N1)NC(=NC2=O)N)CN(C=O)C3=CC=C(C=C3)C(=O)NC(CCC(=O)O)C(=O)O O=C(O)C(NC(=O)c1ccc(cc1)N(C=O)CC3N/C2=C(/N/C(=N\C2=O)N)NC3)CCC(=O)O
Properties
Chemical formula	C20H23N7O7
Molar mass	473.44 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

10-Formyltetrahydrofolate (10-CHO-THF) is a form of tetrahydrofolate that acts as a donor of formyl groups in anabolism. In these reactions 10-CHO-THF is used as a substrate in formyltransferase reactions. This is important in purine biosynthesis, where 10-CHO-THF is a substrate for phosphoribosylaminoimidazolecarboxamide formyltransferase, as well as in the formylation of the methionyl initiator tRNA (fMet-tRNA), when 10-CHO-THF is a substrate for methionyl-tRNA formyltransferase.

Biosynthesis

10-CHO-THF is produced either by the enzyme methenyltetrahydrofolate cyclohydrolase via the reaction

5,10-methenyltetrahydrofolate + H₂O $\rightleftharpoons$ 10-formyltetrahydrofolate

or by the enzyme formate-tetrahydrofolate ligase via the reaction

ATP + formate + tetrahydrofolate $\rightleftharpoons$ ADP + phosphate + 10-formyltetrahydrofolate

It can be converted back into tetrahydrofolate (THF) by formyltetrahydrofolate dehydrogenase or THF and formate by formyltetrahydrofolate deformylase.