ID   TUSB_BUCAI              Reviewed;          95 AA.
AC   P57596;
DT   01-DEC-2000, integrated into UniProtKB/Swiss-Prot.
DT   16-MAY-2006, sequence version 2.
DT   25-MAY-2022, entry version 89.
DE   RecName: Full=Protein TusB {ECO:0000255|HAMAP-Rule:MF_01564};
DE   AltName: Full=tRNA 2-thiouridine synthesizing protein B {ECO:0000255|HAMAP-Rule:MF_01564};
GN   Name=tusB {ECO:0000255|HAMAP-Rule:MF_01564}; OrderedLocusNames=BU530;
OS   Buchnera aphidicola subsp. Acyrthosiphon pisum (strain APS) (Acyrthosiphon
OS   pisum symbiotic bacterium).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=107806;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=APS;
RX   PubMed=10993077; DOI=10.1038/35024074;
RA   Shigenobu S., Watanabe H., Hattori M., Sakaki Y., Ishikawa H.;
RT   "Genome sequence of the endocellular bacterial symbiont of aphids Buchnera
RT   sp. APS.";
RL   Nature 407:81-86(2000).
CC   -!- FUNCTION: Part of a sulfur-relay system required for 2-thiolation of 5-
CC       methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at tRNA wobble positions.
CC       {ECO:0000255|HAMAP-Rule:MF_01564}.
CC   -!- SUBUNIT: Heterohexamer, formed by a dimer of trimers. The hexameric
CC       TusBCD complex contains 2 copies each of TusB, TusC and TusD. The
CC       TusBCD complex interacts with TusE. {ECO:0000255|HAMAP-Rule:MF_01564}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01564}.
CC   -!- SIMILARITY: Belongs to the DsrH/TusB family. {ECO:0000255|HAMAP-
CC       Rule:MF_01564}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=BAB13223.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; BA000003; BAB13223.1; ALT_INIT; Genomic_DNA.
DR   RefSeq; NP_240337.2; NC_002528.1.
DR   RefSeq; WP_009874481.1; NC_002528.1.
DR   AlphaFoldDB; P57596; -.
DR   SMR; P57596; -.
DR   STRING; 107806.10039189; -.
DR   EnsemblBacteria; BAB13223; BAB13223; BAB13223.
DR   KEGG; buc:BU530; -.
DR   PATRIC; fig|107806.10.peg.535; -.
DR   eggNOG; COG2168; Bacteria.
DR   HOGENOM; CLU_166087_2_1_6; -.
DR   OMA; MLHTINK; -.
DR   Proteomes; UP000001806; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0002143; P:tRNA wobble position uridine thiolation; IEA:InterPro.
DR   Gene3D; 3.40.1260.10; -; 1.
DR   HAMAP; MF_01564; Thiourid_synth_B; 1.
DR   InterPro; IPR027396; DsrEFH-like.
DR   InterPro; IPR023526; Sulphur_relay_TusB.
DR   InterPro; IPR007215; Sulphur_relay_TusB/DsrH.
DR   PANTHER; PTHR37526; PTHR37526; 1.
DR   Pfam; PF04077; DsrH; 1.
DR   SUPFAM; SSF75169; SSF75169; 1.
DR   TIGRFAMs; TIGR03011; sulf_tusB_dsrH; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Reference proteome; tRNA processing.
FT   CHAIN           1..95
FT                   /note="Protein TusB"
FT                   /id="PRO_0000216259"
SQ   SEQUENCE   95 AA;  11097 MW;  831FAB631BBB7382 CRC64;
     MLHTLMKSPF ETNVSLVISM LKKSDDFLAL QDGVLIALKD NIFLKSIIMS PVKLYLIKED
     VYARGIRKNI SREFILINYI HFVSLTLKHK KQMTW