ID   QUEF_CAUSK              Reviewed;         151 AA.
AC   B0T8W6;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   25-NOV-2008, entry version 8.
DE   RecName: Full=NADPH-dependent 7-cyano-7-deazaguanine reductase;
DE            EC=1.7.1.13;
DE   AltName: Full=7-cyano-7-carbaguanine reductase;
DE   AltName: Full=PreQ(0) reductase;
DE   AltName: Full=NADPH-dependent nitrile oxidoreductase;
GN   Name=queF; OrderedLocusNames=Caul_3756;
OS   Caulobacter sp. (strain K31).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Caulobacterales;
OC   Caulobacteraceae; Caulobacter.
OX   NCBI_TaxID=366602;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T.,
RA   Dalin E., Tice H., Pitluck S., Bruce D., Goodwin L., Thompson L.S.,
RA   Brettin T., Detter J.C., Han C., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Kim E., Stephens C., Richardson P.;
RT   "Complete sequence of chromosome of Caulobacter sp. K31.";
RL   Submitted (JAN-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the NADPH-dependent reduction of 7-cyano-7-
CC       deazaguanine (preQ0) to 7-aminomethyl-7-deazaguanine (preQ1) (By
CC       similarity).
CC   -!- CATALYTIC ACTIVITY: 7-aminomethyl-7-carbaguanine + 2 NADP(+) = 7-
CC       cyano-7-carbaguanine + 2 NADPH.
CC   -!- PATHWAY: tRNA modification; queuosine-tRNA biosynthesis.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm (By similarity).
CC   -!- SIMILARITY: Belongs to the GTP cyclohydrolase I family. QueF type
CC       1 subfamily.
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DR   EMBL; CP000927; ABZ72883.1; -; Genomic_DNA.
DR   RefSeq; YP_001685381.1; -.
DR   GeneID; 5901218; -.
DR   GenomeReviews; CP000927_GR; Caul_3756.
DR   KEGG; cak:Caul_3756; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:HAMAP.
DR   GO; GO:0003934; F:GTP cyclohydrolase I activity; IEA:InterPro.
DR   GO; GO:0046857; F:oxidoreductase activity, acting on other ni...; IEA:HAMAP.
DR   GO; GO:0033739; F:queuine synthase activity; IEA:EC.
DR   GO; GO:0019438; P:aromatic compound biosynthetic process; IEA:InterPro.
DR   GO; GO:0055114; P:oxidation reduction; IEA:UniProtKB-KW.
DR   GO; GO:0008616; P:queuosine biosynthetic process; IEA:HAMAP.
DR   HAMAP; MF_00818; -; 1.
DR   InterPro; IPR016856; CN_OxRdtase_NADPH-dep_QueF.
DR   InterPro; IPR001474; GTP_CycOHase_I.
DR   Pfam; PF01227; GTP_cyclohydroI; 1.
DR   PIRSF; PIRSF027377; Nitrile_oxidored_QueF; 1.
PE   3: Inferred from homology;
KW   Complete proteome; Cytoplasm; NADP; Oxidoreductase;
KW   Queuosine biosynthesis.
FT   CHAIN         1    151       NADPH-dependent 7-cyano-7-deazaguanine
FT                                reductase.
FT                                /FTId=PRO_1000083836.
SQ   SEQUENCE   151 AA;  16831 MW;  32104A7F0C406CC0 CRC64;
     MTELHVTQLG QVVEPAASPD QAVLERVPNP QSDVTYLARF VAPEFTSLCP VTGQPDFAHL
     VIDYAPGDWL IESKSLKLYL TSFRSHGSFH EDCTVKIGRK IVEIAQPRWL RIGGYWYPRG
     GIPIDVFWQT GPAPEGLWVP DQGVAPYRGR G
//