ID   ATGT_AERPE              Reviewed;         512 AA.
AC   Q9YAC2;
DT   25-JUL-2006, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1999, sequence version 1.
DT   03-AUG-2022, entry version 105.
DE   RecName: Full=tRNA-guanine(15) transglycosylase {ECO:0000255|HAMAP-Rule:MF_01634};
DE            EC=2.4.2.48 {ECO:0000255|HAMAP-Rule:MF_01634};
DE   AltName: Full=7-cyano-7-deazaguanine tRNA-ribosyltransferase {ECO:0000255|HAMAP-Rule:MF_01634};
DE   AltName: Full=Archaeal tRNA-guanine transglycosylase {ECO:0000255|HAMAP-Rule:MF_01634};
GN   Name=tgtA {ECO:0000255|HAMAP-Rule:MF_01634}; OrderedLocusNames=APE_2017;
OS   Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 /
OS   K1).
OC   Archaea; Crenarchaeota; Thermoprotei; Desulfurococcales;
OC   Desulfurococcaceae; Aeropyrum.
OX   NCBI_TaxID=272557;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1;
RX   PubMed=10382966; DOI=10.1093/dnares/6.2.83;
RA   Kawarabayasi Y., Hino Y., Horikawa H., Yamazaki S., Haikawa Y., Jin-no K.,
RA   Takahashi M., Sekine M., Baba S., Ankai A., Kosugi H., Hosoyama A.,
RA   Fukui S., Nagai Y., Nishijima K., Nakazawa H., Takamiya M., Masuda S.,
RA   Funahashi T., Tanaka T., Kudoh Y., Yamazaki J., Kushida N., Oguchi A.,
RA   Aoki K., Kubota K., Nakamura Y., Nomura N., Sako Y., Kikuchi H.;
RT   "Complete genome sequence of an aerobic hyper-thermophilic crenarchaeon,
RT   Aeropyrum pernix K1.";
RL   DNA Res. 6:83-101(1999).
CC   -!- FUNCTION: Exchanges the guanine residue with 7-cyano-7-deazaguanine
CC       (preQ0) at position 15 in the dihydrouridine loop (D-loop) of archaeal
CC       tRNAs. {ECO:0000255|HAMAP-Rule:MF_01634}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=7-cyano-7-deazaguanine + guanosine(15) in tRNA = 7-cyano-7-
CC         carbaguanosine(15) in tRNA + guanine; Xref=Rhea:RHEA:43164,
CC         Rhea:RHEA-COMP:10371, Rhea:RHEA-COMP:10372, ChEBI:CHEBI:16235,
CC         ChEBI:CHEBI:45075, ChEBI:CHEBI:74269, ChEBI:CHEBI:82850; EC=2.4.2.48;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01634};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01634};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01634};
CC   -!- PATHWAY: tRNA modification; archaeosine-tRNA biosynthesis.
CC       {ECO:0000255|HAMAP-Rule:MF_01634}.
CC   -!- SIMILARITY: Belongs to the archaeosine tRNA-ribosyltransferase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01634}.
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DR   EMBL; BA000002; BAA81027.1; -; Genomic_DNA.
DR   PIR; C72505; C72505.
DR   AlphaFoldDB; Q9YAC2; -.
DR   SMR; Q9YAC2; -.
DR   STRING; 272557.APE_2017; -.
DR   EnsemblBacteria; BAA81027; BAA81027; APE_2017.
DR   KEGG; ape:APE_2017; -.
DR   PATRIC; fig|272557.25.peg.1343; -.
DR   eggNOG; arCOG00989; Archaea.
DR   OMA; FPCSCPV; -.
DR   UniPathway; UPA00393; -.
DR   Proteomes; UP000002518; Chromosome.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0016763; F:pentosyltransferase activity; IEA:InterPro.
DR   GO; GO:0006400; P:tRNA modification; IEA:InterPro.
DR   Gene3D; 3.20.20.105; -; 1.
DR   HAMAP; MF_01634; TgtA_arch; 1.
DR   InterPro; IPR036511; TGT-like_sf.
DR   InterPro; IPR004804; TgtA.
DR   InterPro; IPR002616; tRNA_ribo_trans-like.
DR   Pfam; PF01702; TGT; 1.
DR   SUPFAM; SSF51713; SSF51713; 1.
DR   TIGRFAMs; TIGR00432; arcsn_tRNA_tgt; 1.
DR   TIGRFAMs; TIGR00449; tgt_general; 1.
PE   3: Inferred from homology;
KW   Glycosyltransferase; Metal-binding; Reference proteome; Transferase;
KW   tRNA processing; Zinc.
FT   CHAIN           1..512
FT                   /note="tRNA-guanine(15) transglycosylase"
FT                   /id="PRO_0000247867"
FT   ACT_SITE        85
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01634"
FT   BINDING         120
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01634"
FT   BINDING         272
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01634"
FT   BINDING         274
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01634"
FT   BINDING         277
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01634"
SQ   SEQUENCE   512 AA;  57376 MW;  69F9FAB510324C95 CRC64;
     MFEIRDVDLA GRIGRIYTQH GVVETPAFFP VIDVYRQEVS VDEVRAAGFG QVITNAYLLW
     KRFGWEAAEK GVHRILGFPG VVMTDSGAYQ ILEYGGVELS QGEVVEYQKR LGSDIAVILD
     IPTGDVGRRE AEESVRETIR RALEARVMIE GDERIWVYPV QGGRYFDLVE ESARVGGRLG
     FYRMYGIGSP TVFLERYMYH VVVEAVYRAK KHLPWGRPVH LFGAGHPLIF PYAVALGVDT
     FDSASYILYA REGRYITEYG VYRIEDLDYL PCSCPVCSRY TPQELREMDR VERTRLLALH
     NLYVISASMR RVKQAIREGR LWELLEETSR KHPSTARVMA RMRRYIDALE KGSARGRGVV
     RGVRAYGLES LSNPRLSRFS SDAARLVEAM AEKWGGGKAV LKPLDPKPEP GQCESMVGGG
     EWILFYQPFL GVFPVEACGA YPSLQIDYPQ EGLPAEVIGD LASKIASTVS ILRGRGFTVR
     LEYCGKVEWQ ARAVEALKTA AAGDLPTVEA CG