ID   MNMC_CAUSK              Reviewed;         601 AA.
AC   B0SVF8;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 76.
DE   RecName: Full=tRNA 5-methylaminomethyl-2-thiouridine biosynthesis bifunctional protein MnmC {ECO:0000255|HAMAP-Rule:MF_01102};
DE            Short=tRNA mnm(5)s(2)U biosynthesis bifunctional protein {ECO:0000255|HAMAP-Rule:MF_01102};
DE   Includes:
DE     RecName: Full=tRNA (mnm(5)s(2)U34)-methyltransferase {ECO:0000255|HAMAP-Rule:MF_01102};
DE              EC=2.1.1.61 {ECO:0000255|HAMAP-Rule:MF_01102};
DE   Includes:
DE     RecName: Full=FAD-dependent cmnm(5)s(2)U34 oxidoreductase {ECO:0000255|HAMAP-Rule:MF_01102};
DE              EC=1.5.-.- {ECO:0000255|HAMAP-Rule:MF_01102};
GN   Name=mnmC {ECO:0000255|HAMAP-Rule:MF_01102}; OrderedLocusNames=Caul_0866;
OS   Caulobacter sp. (strain K31).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Caulobacterales;
OC   Caulobacteraceae; Caulobacter; unclassified Caulobacter.
OX   NCBI_TaxID=366602;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K31;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Bruce D., Goodwin L., Thompson L.S., Brettin T.,
RA   Detter J.C., Han C., Schmutz J., Larimer F., Land M., Hauser L.,
RA   Kyrpides N., Kim E., Stephens C., Richardson P.;
RT   "Complete sequence of chromosome of Caulobacter sp. K31.";
RL   Submitted (JAN-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the last two steps in the biosynthesis of 5-
CC       methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at the wobble position
CC       (U34) in tRNA. Catalyzes the FAD-dependent demodification of
CC       cmnm(5)s(2)U34 to nm(5)s(2)U34, followed by the transfer of a methyl
CC       group from S-adenosyl-L-methionine to nm(5)s(2)U34, to form
CC       mnm(5)s(2)U34. {ECO:0000255|HAMAP-Rule:MF_01102}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=5-aminomethyl-2-thiouridine(34) in tRNA + S-adenosyl-L-
CC         methionine = 5-methylaminomethyl-2-thiouridine(34) in tRNA + H(+) +
CC         S-adenosyl-L-homocysteine; Xref=Rhea:RHEA:19569, Rhea:RHEA-
CC         COMP:10195, Rhea:RHEA-COMP:10197, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:57856, ChEBI:CHEBI:59789, ChEBI:CHEBI:74454,
CC         ChEBI:CHEBI:74455; EC=2.1.1.61; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01102};
CC   -!- COFACTOR:
CC       Name=FAD; Xref=ChEBI:CHEBI:57692;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01102};
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01102}.
CC   -!- SIMILARITY: In the N-terminal section; belongs to the methyltransferase
CC       superfamily. tRNA (mnm(5)s(2)U34)-methyltransferase family.
CC       {ECO:0000255|HAMAP-Rule:MF_01102}.
CC   -!- SIMILARITY: In the C-terminal section; belongs to the DAO family.
CC       {ECO:0000255|HAMAP-Rule:MF_01102}.
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DR   EMBL; CP000927; ABZ69997.1; -; Genomic_DNA.
DR   RefSeq; WP_012284933.1; NC_010338.1.
DR   AlphaFoldDB; B0SVF8; -.
DR   SMR; B0SVF8; -.
DR   STRING; 366602.Caul_0866; -.
DR   EnsemblBacteria; ABZ69997; ABZ69997; Caul_0866.
DR   KEGG; cak:Caul_0866; -.
DR   eggNOG; COG0665; Bacteria.
DR   eggNOG; COG4121; Bacteria.
DR   HOGENOM; CLU_022427_1_0_5; -.
DR   OMA; NFLCAWQ; -.
DR   OrthoDB; 912110at2; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0050660; F:flavin adenine dinucleotide binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0016645; F:oxidoreductase activity, acting on the CH-NH group of donors; IEA:InterPro.
DR   GO; GO:0004808; F:tRNA (5-methylaminomethyl-2-thiouridylate)-methyltransferase activity; IEA:UniProtKB-EC.
DR   GO; GO:0002097; P:tRNA wobble base modification; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.40.50.150; -; 1.
DR   Gene3D; 3.50.50.60; -; 1.
DR   HAMAP; MF_01102; MnmC; 1.
DR   InterPro; IPR006076; FAD-dep_OxRdtase.
DR   InterPro; IPR036188; FAD/NAD-bd_sf.
DR   InterPro; IPR008471; MnmC-like_methylTransf.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   InterPro; IPR023032; tRNA_MAMT_biosynth_bifunc_MnmC.
DR   InterPro; IPR017610; tRNA_S-uridine_synth_MnmC_C.
DR   Pfam; PF01266; DAO; 1.
DR   Pfam; PF05430; Methyltransf_30; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR03197; MnmC_Cterm; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; FAD; Flavoprotein; Methyltransferase; Multifunctional enzyme;
KW   Oxidoreductase; S-adenosyl-L-methionine; Transferase; tRNA processing.
FT   CHAIN           1..601
FT                   /note="tRNA 5-methylaminomethyl-2-thiouridine biosynthesis
FT                   bifunctional protein MnmC"
FT                   /id="PRO_0000347974"
FT   REGION          1..237
FT                   /note="tRNA (mnm(5)s(2)U34)-methyltransferase"
FT   REGION          252..601
FT                   /note="FAD-dependent cmnm(5)s(2)U34 oxidoreductase"
SQ   SEQUENCE   601 AA;  62482 MW;  2E090122B87EC6EB CRC64;
     MSDPTASPLI WRDDGMPQSA LYGDVYFSSA DGLAETRAVF LAGCDLPAAW AGRDHFTVGE
     LGFGTGLNIA ALLDLWRREK APHSMQGGQR LHIFSIEAHP ITRDEAARAL AVWPELGEAA
     SVLLDHWPGL ARGFHRIDLP GFDATFDLAV MDVEPALAAW DGAADAWFLD GFSPALNPAM
     WREEILAAVA ARSAPGARAA TFTVAGAVRR GLSAAGFQVD RRPGFGRKKQ RLEAVAPGVA
     ASPPRPRRLA VIGGGIAGAA MARAARAEGL EAMMFDDGQA PASGNPAALV TPALDAGGGP
     RAALPAQAFA RAAALYEALP EAVIARGALK LSVVPRDEAR HAAVADQDLF EPGTMAVLDA
     ATATARLGEP VGEALSMSQA LVVEPARVLD AWRGEVIDAQ VARLAHEDGV WRLLGSDDQL
     LAEVDAVVLA GGAGQARLWP DAPLRPIRGQ TSWTDRPLAF PTPAAFGGYV APTRDGMLFG
     ATHDRDDVGT DARAEDDRRN LRALAEGLPK LAASLADAPL RGRAAVRATT ADHLPVAGAV
     PGAAPGLFVL GGLGGRGFCL APLLAEHLAA RILALPSPLP RPLSALVEPG RFSSRVATGA
     V