CATH Classification

Domain Context

CATH Clusters

Superfamily 3.30.1130.10
Functional Family

Enzyme Information

1.7.1.13
PreQ(1) synthase.
based on mapping to UniProt O31678
7-aminomethyl-7-carbaguanine + 2 NADP(+) = 7-cyano-7-carbaguanine + 2 NADPH.
-!- The reaction occurs in the reverse direction. -!- This enzyme catalyzes one of the early steps in the synthesis of queosine (Q-tRNA), and is followed by the action of EC 2.4.2.29. -!- Queosine is found in the wobble position of tRNA(GUN) in eukaryotes and bacteria and is thought to be involved in translational modulation.

UniProtKB Entries (1)

O31678
QUEF_BACSU
Bacillus subtilis subsp. subtilis str. 168
NADPH-dependent 7-cyano-7-deazaguanine reductase

PDB Structure

PDB 5UDG
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Protection of the Queuosine Biosynthesis Enzyme QueF from Irreversible Oxidation by a Conserved Intramolecular Disulfide.
Mohammad, A., Bon Ramos, A., Lee, B.W., Cohen, S.W., Kiani, M.K., Iwata-Reuyl, D., Stec, B., Swairjo, M.A.
Biomolecules