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EC Number
Substrates
Commentary Substrates
Organism
Products
Commentary (Products)
Reversibility
1.7.1.13
more
no substrates: acetonitrile, benzonitrile and benzylcyanide
Escherichia coli
?
-
?
1.7.1.13
more
during catalysis each active site of the dimeric enzyme binds one substrate molecule. NADPH binds independent of the substrate. The PreQ0 binding pocket of the active site is not involved in the binding of NADPH
Escherichia coli
?
-
?
1.7.1.13
more
QueF binds substrate preQ0 in a strongly exothermic process (DeltaH 80.3 kJ/mol) whereby the thioimide adduct is formed with half-of-the-sites reactivity in the homodimeric enzyme. Both steps of preQ0 reduction involve transfer of the 4-pro-R-hydrogen from NADPH. They proceed about 4-7fold more slowly than trapping of the enzyme-bound preQ0 as covalent thioimide and are mainly rate-limiting for the enzyme's kcat
Escherichia coli
?
-
?
1.7.1.13
7-cyano-7-carbaguanine + 2 NADPH + 2 H+
-
Pectobacterium carotovorum subsp. carotovorum
7-aminomethyl-7-carbaguanine + 2 NADP+
-
?
1.7.1.13
more
enzyme is highly specific for substrate preQ0
Pectobacterium carotovorum subsp. carotovorum
?
-
?
1.7.1.13
7-cyano-7-carbaguanine + 2 NADPH + 2 H+
-
Pectobacterium carotovorum subsp. carotovorum PCC21
7-aminomethyl-7-carbaguanine + 2 NADP+
-
?
1.7.1.13
more
enzyme is highly specific for substrate preQ0
Pectobacterium carotovorum subsp. carotovorum PCC21
?
-
?
1.7.1.13
7-cyano-7-deazaguanine + 2 NADPH + 2 H+
-
Vibrio cholerae
queuine + 2 NADP+
queuine is 7-aminomethyl-7-deazaguanine
?
1.7.1.13
7-cyano-7-deazaguanine + 2 NADPH + 2 H+
-
Vibrio cholerae ATCC 39315
queuine + 2 NADP+
queuine is 7-aminomethyl-7-deazaguanine
?
1.7.1.13
7-cyano-7-carbaguanine + 2 NADPH + 2 H+
-
Vibrio cholerae O1
7-aminomethyl-7-carbaguanine + 2 NADP+
-
?
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