ID   MNMA_TRIV2              Reviewed;         352 AA.
AC   Q3M5R7;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   25-OCT-2005, sequence version 1.
DT   03-AUG-2022, entry version 90.
DE   RecName: Full=tRNA-specific 2-thiouridylase MnmA {ECO:0000255|HAMAP-Rule:MF_00144};
DE            EC=2.8.1.13 {ECO:0000255|HAMAP-Rule:MF_00144};
GN   Name=mnmA {ECO:0000255|HAMAP-Rule:MF_00144}; OrderedLocusNames=Ava_4065;
OS   Trichormus variabilis (strain ATCC 29413 / PCC 7937) (Anabaena variabilis).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Trichormus.
OX   NCBI_TaxID=240292;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29413 / PCC 7937;
RX   PubMed=25197444; DOI=10.4056/sigs.3899418;
RA   Thiel T., Pratte B.S., Zhong J., Goodwin L., Copeland A., Lucas S., Han C.,
RA   Pitluck S., Land M.L., Kyrpides N.C., Woyke T.;
RT   "Complete genome sequence of Anabaena variabilis ATCC 29413.";
RL   Stand. Genomic Sci. 9:562-573(2014).
CC   -!- FUNCTION: Catalyzes the 2-thiolation of uridine at the wobble position
CC       (U34) of tRNA, leading to the formation of s(2)U34. {ECO:0000255|HAMAP-
CC       Rule:MF_00144}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=AH2 + ATP + S-sulfanyl-L-cysteinyl-[protein] + uridine(34) in
CC         tRNA = 2-thiouridine(34) in tRNA + A + AMP + diphosphate + H(+) + L-
CC         cysteinyl-[protein]; Xref=Rhea:RHEA:47032, Rhea:RHEA-COMP:10131,
CC         Rhea:RHEA-COMP:11726, Rhea:RHEA-COMP:11727, Rhea:RHEA-COMP:11728,
CC         ChEBI:CHEBI:13193, ChEBI:CHEBI:15378, ChEBI:CHEBI:17499,
CC         ChEBI:CHEBI:29950, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:61963, ChEBI:CHEBI:65315, ChEBI:CHEBI:87170,
CC         ChEBI:CHEBI:456215; EC=2.8.1.13; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00144};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00144}.
CC   -!- SIMILARITY: Belongs to the MnmA/TRMU family. {ECO:0000255|HAMAP-
CC       Rule:MF_00144}.
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DR   EMBL; CP000117; ABA23669.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q3M5R7; -.
DR   SMR; Q3M5R7; -.
DR   STRING; 240292.Ava_4065; -.
DR   EnsemblBacteria; ABA23669; ABA23669; Ava_4065.
DR   KEGG; ava:Ava_4065; -.
DR   eggNOG; COG0482; Bacteria.
DR   HOGENOM; CLU_035188_0_0_3; -.
DR   OMA; AVCTGHY; -.
DR   Proteomes; UP000002533; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0016783; F:sulfurtransferase activity; IEA:InterPro.
DR   GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0006400; P:tRNA modification; IEA:UniProtKB-UniRule.
DR   CDD; cd01998; tRNA_Me_trans; 1.
DR   Gene3D; 2.30.30.280; -; 1.
DR   Gene3D; 3.40.50.620; -; 1.
DR   HAMAP; MF_00144; tRNA_thiouridyl_MnmA; 1.
DR   InterPro; IPR023382; Adenine_a_hdrlase_dom.
DR   InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR   InterPro; IPR004506; tRNA-specific_2-thiouridylase.
DR   TIGRFAMs; TIGR00420; trmU; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Disulfide bond; Nucleotide-binding; RNA-binding;
KW   Transferase; tRNA processing; tRNA-binding.
FT   CHAIN           1..352
FT                   /note="tRNA-specific 2-thiouridylase MnmA"
FT                   /id="PRO_0000349509"
FT   REGION          143..145
FT                   /note="Interaction with tRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
FT   REGION          298..299
FT                   /note="Interaction with tRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
FT   ACT_SITE        94
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
FT   ACT_SITE        193
FT                   /note="Cysteine persulfide intermediate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
FT   BINDING         7..14
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
FT   BINDING         33
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
FT   BINDING         119
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
FT   SITE            120
FT                   /note="Interaction with tRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
FT   SITE            331
FT                   /note="Interaction with tRNA"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
FT   DISULFID        94..193
FT                   /note="Alternate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00144"
SQ   SEQUENCE   352 AA;  38582 MW;  3F2BA4340902A5A1 CRC64;
     MKKVVVGLSG GVDSSTAAAI LHNQGYEVIG LTLWLMKGKG QCCSEGMIDA AYICEQLGIP
     HEVVDMRDVF QTHIVDYLVT GYGAGITPLP CSQCNKTVKF GPMVQYAREQ LGCDRIATGH
     YARISYDEAS GRYQLLRAVD RNKDQSYFLY DLSQDLLAAS LFPLGEMEKA DTRRIATEHG
     LKTADKPESQ DLCLVESNGS MRAFLDKYIA PKKGDIVDTA GKILGQHDGV HHYTIGQRKG
     LGIAAPEPLY VVELDAVNNK VVVGDRTKAT QEECTVSRVN WVSIPEPSTP IRAAVQIRYR
     SAPEPVTVIP LENSRVRLVF DEPQFSITPG QAAVWYDGDK VLGGGIIEQF SN