ID   TRUB_NANEQ              Reviewed;         348 AA.
AC   P60346;
DT   16-FEB-2004, integrated into UniProtKB/Swiss-Prot.
DT   16-FEB-2004, sequence version 1.
DT   25-MAY-2022, entry version 100.
DE   RecName: Full=Probable tRNA pseudouridine synthase B {ECO:0000255|HAMAP-Rule:MF_01081};
DE            EC=5.4.99.25 {ECO:0000255|HAMAP-Rule:MF_01081};
DE   AltName: Full=tRNA pseudouridine(55) synthase {ECO:0000255|HAMAP-Rule:MF_01081};
DE            Short=Psi55 synthase {ECO:0000255|HAMAP-Rule:MF_01081};
DE   AltName: Full=tRNA pseudouridylate synthase {ECO:0000255|HAMAP-Rule:MF_01081};
DE   AltName: Full=tRNA-uridine isomerase {ECO:0000255|HAMAP-Rule:MF_01081};
GN   Name=truB {ECO:0000255|HAMAP-Rule:MF_01081}; OrderedLocusNames=NEQ454;
OS   Nanoarchaeum equitans (strain Kin4-M).
OC   Archaea; Nanoarchaeota; Candidatus Nanoarchaeia; Nanoarchaeales;
OC   Nanoarchaeaceae; Nanoarchaeum.
OX   NCBI_TaxID=228908;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Kin4-M;
RX   PubMed=14566062; DOI=10.1073/pnas.1735403100;
RA   Waters E., Hohn M.J., Ahel I., Graham D.E., Adams M.D., Barnstead M.,
RA   Beeson K.Y., Bibbs L., Bolanos R., Keller M., Kretz K., Lin X., Mathur E.,
RA   Ni J., Podar M., Richardson T., Sutton G.G., Simon M., Soell D.,
RA   Stetter K.O., Short J.M., Noorderwier M.;
RT   "The genome of Nanoarchaeum equitans: insights into early archaeal
RT   evolution and derived parasitism.";
RL   Proc. Natl. Acad. Sci. U.S.A. 100:12984-12988(2003).
CC   -!- FUNCTION: Could be responsible for synthesis of pseudouridine from
CC       uracil-55 in the psi GC loop of transfer RNAs. {ECO:0000255|HAMAP-
CC       Rule:MF_01081}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=uridine(55) in tRNA = pseudouridine(55) in tRNA;
CC         Xref=Rhea:RHEA:42532, Rhea:RHEA-COMP:10101, Rhea:RHEA-COMP:10102,
CC         ChEBI:CHEBI:65314, ChEBI:CHEBI:65315; EC=5.4.99.25;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01081};
CC   -!- SIMILARITY: Belongs to the pseudouridine synthase TruB family. Type 2
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_01081}.
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DR   EMBL; AE017199; AAR39298.1; -; Genomic_DNA.
DR   AlphaFoldDB; P60346; -.
DR   SMR; P60346; -.
DR   STRING; 228908.NEQ454; -.
DR   EnsemblBacteria; AAR39298; AAR39298; NEQ454.
DR   KEGG; neq:NEQ454; -.
DR   PATRIC; fig|228908.8.peg.467; -.
DR   HOGENOM; CLU_032087_3_0_2; -.
DR   OMA; GPFKEDE; -.
DR   Proteomes; UP000000578; Chromosome.
DR   GO; GO:0003723; F:RNA binding; IEA:InterPro.
DR   GO; GO:0106029; F:tRNA pseudouridine synthase activity; IEA:UniProtKB-EC.
DR   GO; GO:0031119; P:tRNA pseudouridine synthesis; IEA:UniProtKB-UniRule.
DR   Gene3D; 2.30.130.10; -; 1.
DR   HAMAP; MF_01081; TruB_arch; 1.
DR   InterPro; IPR012960; Dyskerin-like.
DR   InterPro; IPR020103; PsdUridine_synth_cat_dom_sf.
DR   InterPro; IPR002501; PsdUridine_synth_N.
DR   InterPro; IPR002478; PUA.
DR   InterPro; IPR015947; PUA-like_sf.
DR   InterPro; IPR036974; PUA_sf.
DR   InterPro; IPR004802; tRNA_PsdUridine_synth_B_fam.
DR   InterPro; IPR026326; TruB_arch.
DR   InterPro; IPR032819; TruB_C.
DR   InterPro; IPR004521; Uncharacterised_CHP00451.
DR   PANTHER; PTHR23127; PTHR23127; 1.
DR   Pfam; PF08068; DKCLD; 1.
DR   Pfam; PF01472; PUA; 1.
DR   Pfam; PF16198; TruB_C_2; 1.
DR   Pfam; PF01509; TruB_N; 1.
DR   SMART; SM01136; DKCLD; 1.
DR   SMART; SM00359; PUA; 1.
DR   SUPFAM; SSF55120; SSF55120; 1.
DR   SUPFAM; SSF88697; SSF88697; 1.
DR   TIGRFAMs; TIGR00425; CBF5; 1.
DR   TIGRFAMs; TIGR00451; unchar_dom_2; 1.
DR   PROSITE; PS50890; PUA; 1.
PE   3: Inferred from homology;
KW   Isomerase; Reference proteome; tRNA processing.
FT   CHAIN           1..348
FT                   /note="Probable tRNA pseudouridine synthase B"
FT                   /id="PRO_0000121964"
FT   DOMAIN          260..335
FT                   /note="PUA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01081"
FT   ACT_SITE        93
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01081"
SQ   SEQUENCE   348 AA;  39259 MW;  F8BFB2D4FEC76FAB CRC64;
     MLCLSLMRIF CSKCLEEQEC PLPWELEKYE IWVKKEAETN EKWGEDPYNR PIERLLKYSV
     INLDKPSGPT SHQVVAWVRD IVGVKAGHGG TLDPKVTGVL PIAIGEATKV LQTLLIAGKE
     YVALMHLHKE VSEKDIIKVM SKFVGTIIQT PPLRSAVKKR PRKKKVYCIK IIEIDGKDVL
     FRVSTQGGVY IRKLIHDIGV KLGVGAHMQE LRRIKSGPFH ENNSVYLQDI VDSLYFWKEE
     GNEEYIRKVF LPVEEAVKHL KKIYILDSAV AAIVHGANLA VPGIAKLYSN IKKGDLVSIH
     TLKGELVAIG IALMDSKEML EKKRGIAVDI ERVFMKPGLY PKMWVSQG