ID   TRUB_ONYPE              Reviewed;         283 AA.
AC   Q6YQY6;
DT   11-OCT-2004, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 106.
DE   RecName: Full=tRNA pseudouridine synthase B {ECO:0000255|HAMAP-Rule:MF_01080};
DE            EC=5.4.99.25 {ECO:0000255|HAMAP-Rule:MF_01080};
DE   AltName: Full=tRNA pseudouridine(55) synthase {ECO:0000255|HAMAP-Rule:MF_01080};
DE            Short=Psi55 synthase {ECO:0000255|HAMAP-Rule:MF_01080};
DE   AltName: Full=tRNA pseudouridylate synthase {ECO:0000255|HAMAP-Rule:MF_01080};
DE   AltName: Full=tRNA-uridine isomerase {ECO:0000255|HAMAP-Rule:MF_01080};
GN   Name=truB {ECO:0000255|HAMAP-Rule:MF_01080}; OrderedLocusNames=PAM_237;
OS   Onion yellows phytoplasma (strain OY-M).
OC   Bacteria; Tenericutes; Mollicutes; Acholeplasmatales; Acholeplasmataceae;
OC   Candidatus Phytoplasma; Candidatus Phytoplasma asteris.
OX   NCBI_TaxID=262768;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=OY-M;
RX   PubMed=14661021; DOI=10.1038/ng1277;
RA   Oshima K., Kakizawa S., Nishigawa H., Jung H.-Y., Wei W., Suzuki S.,
RA   Arashida R., Nakata D., Miyata S., Ugaki M., Namba S.;
RT   "Reductive evolution suggested from the complete genome sequence of a
RT   plant-pathogenic phytoplasma.";
RL   Nat. Genet. 36:27-29(2004).
CC   -!- FUNCTION: Responsible for synthesis of pseudouridine from uracil-55 in
CC       the psi GC loop of transfer RNAs. {ECO:0000255|HAMAP-Rule:MF_01080}.
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_01080};
CC   -!- SIMILARITY: Belongs to the pseudouridine synthase TruB family. Type 1
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_01080}.
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DR   EMBL; AP006628; BAD04322.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q6YQY6; -.
DR   SMR; Q6YQY6; -.
DR   STRING; 262768.PAM_237; -.
DR   EnsemblBacteria; BAD04322; BAD04322; PAM_237.
DR   KEGG; poy:PAM_237; -.
DR   eggNOG; COG0130; Bacteria.
DR   HOGENOM; CLU_032087_0_1_14; -.
DR   OMA; ELQFIRW; -.
DR   OrthoDB; 1166299at2; -.
DR   BioCyc; OYEL262768:G1G26-285-MON; -.
DR   Proteomes; UP000002523; 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   CDD; cd02573; PseudoU_synth_EcTruB; 1.
DR   HAMAP; MF_01080; TruB_bact; 1.
DR   InterPro; IPR020103; PsdUridine_synth_cat_dom_sf.
DR   InterPro; IPR002501; PsdUridine_synth_N.
DR   InterPro; IPR014780; tRNA_psdUridine_synth_TruB.
DR   PANTHER; PTHR13767; PTHR13767; 1.
DR   Pfam; PF01509; TruB_N; 1.
DR   SUPFAM; SSF55120; SSF55120; 1.
DR   TIGRFAMs; TIGR00431; TruB; 1.
PE   3: Inferred from homology;
KW   Isomerase; Reference proteome; tRNA processing.
FT   CHAIN           1..283
FT                   /note="tRNA pseudouridine synthase B"
FT                   /id="PRO_0000121879"
FT   ACT_SITE        38
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01080"
SQ   SEQUENCE   283 AA;  32761 MW;  125DA68DE481220E CRC64;
     MNGFFLVNKP EKMTSHDVVF QIKKKFHFDK VGHTGTLDPL ASGLLIICVG KATKLAFLFD
     KLPKTYQGTF LFNKHYDTLD VTGKLLDTKN TPLTDCNIQK SFASFHQKKY LQIPPMFSAV
     KIKGKKMYRL ARKNQVVDIP PREVFIHHFE KTSLFCRDQV DFLAHVSKGT YIRSLARDLA
     LQLNTYGALL RLQRTAIGTH LLQNAKTIEN LELNDLILDS TFFAAYDELI LNDYLIKLVK
     NGTHLDQRQI TTKKPFIVKD SNKNFVAYYD TLDENKYYPR YFF