ID   TUSA_KLEP3              Reviewed;          81 AA.
AC   B5XTL8;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   25-NOV-2008, sequence version 1.
DT   25-MAY-2022, entry version 63.
DE   RecName: Full=Sulfur carrier protein TusA {ECO:0000255|HAMAP-Rule:MF_00413};
DE   AltName: Full=Sulfur mediator TusA {ECO:0000255|HAMAP-Rule:MF_00413};
DE   AltName: Full=Sulfur transfer protein TusA {ECO:0000255|HAMAP-Rule:MF_00413};
DE   AltName: Full=tRNA 2-thiouridine synthesizing protein A {ECO:0000255|HAMAP-Rule:MF_00413};
GN   Name=tusA {ECO:0000255|HAMAP-Rule:MF_00413}; OrderedLocusNames=KPK_0277;
OS   Klebsiella pneumoniae (strain 342).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Klebsiella/Raoultella group; Klebsiella.
OX   NCBI_TaxID=507522;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=342;
RX   PubMed=18654632; DOI=10.1371/journal.pgen.1000141;
RA   Fouts D.E., Tyler H.L., DeBoy R.T., Daugherty S., Ren Q., Badger J.H.,
RA   Durkin A.S., Huot H., Shrivastava S., Kothari S., Dodson R.J., Mohamoud Y.,
RA   Khouri H., Roesch L.F.W., Krogfelt K.A., Struve C., Triplett E.W.,
RA   Methe B.A.;
RT   "Complete genome sequence of the N2-fixing broad host range endophyte
RT   Klebsiella pneumoniae 342 and virulence predictions verified in mice.";
RL   PLoS Genet. 4:E1000141-E1000141(2008).
CC   -!- FUNCTION: Sulfur carrier protein involved in sulfur trafficking in the
CC       cell. Part of a sulfur-relay system required for 2-thiolation during
CC       synthesis of 2-thiouridine of the modified wobble base 5-
CC       methylaminomethyl-2-thiouridine (mnm(5)s(2)U) in tRNA. Interacts with
CC       IscS and stimulates its cysteine desulfurase activity. Accepts an
CC       activated sulfur from IscS, which is then transferred to TusD, and thus
CC       determines the direction of sulfur flow from IscS to 2-thiouridine
CC       formation. Also appears to be involved in sulfur transfer for the
CC       biosynthesis of molybdopterin. {ECO:0000255|HAMAP-Rule:MF_00413}.
CC   -!- PATHWAY: tRNA modification. {ECO:0000255|HAMAP-Rule:MF_00413}.
CC   -!- SUBUNIT: Interacts with IscS. {ECO:0000255|HAMAP-Rule:MF_00413}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00413}.
CC   -!- SIMILARITY: Belongs to the sulfur carrier protein TusA family.
CC       {ECO:0000255|HAMAP-Rule:MF_00413}.
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DR   EMBL; CP000964; ACI09371.1; -; Genomic_DNA.
DR   AlphaFoldDB; B5XTL8; -.
DR   SMR; B5XTL8; -.
DR   EnsemblBacteria; ACI09371; ACI09371; KPK_0277.
DR   KEGG; kpe:KPK_0277; -.
DR   HOGENOM; CLU_165255_5_0_6; -.
DR   OMA; FCQFLGH; -.
DR   OrthoDB; 2042068at2; -.
DR   Proteomes; UP000001734; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0097163; F:sulfur carrier activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0002143; P:tRNA wobble position uridine thiolation; IEA:InterPro.
DR   CDD; cd03423; SirA; 1.
DR   Gene3D; 3.30.110.40; -; 1.
DR   HAMAP; MF_00413; Thiourid_synth_A; 1.
DR   InterPro; IPR022931; Sulphur_carrier_TusA.
DR   InterPro; IPR001455; TusA-like.
DR   InterPro; IPR036868; TusA-like_sf.
DR   Pfam; PF01206; TusA; 1.
DR   SUPFAM; SSF64307; SSF64307; 1.
DR   PROSITE; PS01148; UPF0033; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; tRNA processing.
FT   CHAIN           1..81
FT                   /note="Sulfur carrier protein TusA"
FT                   /id="PRO_1000199924"
FT   ACT_SITE        19
FT                   /note="Cysteine persulfide intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00413"
SQ   SEQUENCE   81 AA;  9260 MW;  85A5C83B9919E917 CRC64;
     MSELFSTPDH TLDALGLRCP EPVMMVRKTV RTMPVGETLL IIADDPATTR DIPGFCRFME
     HELVAQETEA LPYRYLIRKS H