1.7.1.13: preQ1 synthase

This is an abbreviated version!
For detailed information about preQ1 synthase, go to the full flat file.

Word Map on EC 1.7.1.13

1.7.1.13

nucleoside

queuosine

7-aminomethyl-7-deazaguanine

adduct

gtp

reductases

imine

Reaction

+ 2 NADP⁺ =

+ 2 NADPH + 2 H+

Synonyms

7-aminomethyl-7-carbaguanine:NADP+ oxidoreductase, 7-cyano-7-deazaguanine reductase, NADPH-dependent 7-cyano-7-deazaguanine reductase, nitrile reductase, NRed, preQ0 reductase, preQ0oxidoreductase, QueF, queuine synthase, YkvM

ECTree

1 Oxidoreductases

1.7 Acting on other nitrogenous compounds as donors

1.7.1 With NAD⁺ or NADP⁺ as acceptor

1.7.1.13 preQ1 synthase

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Systematic Name on EC 1.7.1.13 - preQ1 synthase

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7-aminomethyl-7-carbaguanine:NADP+ oxidoreductase

The reaction occurs in the reverse direction. This enzyme catalyses one of the early steps in the synthesis of queuosine (Q-tRNA), and is followed by the action of EC 2.4.2.29, tRNA-guanosine34 transglycosylase. Queuosine is found in the wobble position of tRNAGUN in Eukarya and Bacteria [2] and is thought to be involved in translational modulation. The enzyme is not a GTP cyclohydrolase, as was thought previously based on sequence-homology studies.