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3.5.4.39: GTP cyclohydrolase IV

This is an abbreviated version!
For detailed information about GTP cyclohydrolase IV, go to the full flat file.

Reaction

GTP
+
H2O
=
7,8-dihydroneopterin 2',3'-cyclic phosphate
+
formate
+
diphosphate

Synonyms

GTP cyclohydrolase MptA, MptA

ECTree

     3 Hydrolases
         3.5 Acting on carbon-nitrogen bonds, other than peptide bonds
             3.5.4 In cyclic amidines
                3.5.4.39 GTP cyclohydrolase IV

Engineering

Engineering on EC 3.5.4.39 - GTP cyclohydrolase IV

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PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
C163S-alkylcysteine
when incubated with N-ethylmaleimide, the enzyme loses 67% activity. Iodoacetamide reduces activity by 33%
E50D
no effect on specific activity of the enzyme
H101N
mutation does not affect the ability of the enzyme to form dihydro-D-neopterin 2',3'-cyclic phosphate nor does it have a reduced amount of iron
H200N/E50D
decrease in the specific activity
H293N
decrease in the specific activity
H295N