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MNMC_POLNA
ID   MNMC_POLNA              Reviewed;         637 AA.
AC   A1VQ03;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   06-FEB-2007, sequence version 1.
DT   03-AUG-2022, entry version 82.
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=Pnap_2424;
OS   Polaromonas naphthalenivorans (strain CJ2).
OC   Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales;
OC   Comamonadaceae; Polaromonas.
OX   NCBI_TaxID=365044;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CJ2;
RX   PubMed=19453698; DOI=10.1111/j.1462-2920.2009.01947.x;
RA   Yagi J.M., Sims D., Brettin T., Bruce D., Madsen E.L.;
RT   "The genome of Polaromonas naphthalenivorans strain CJ2, isolated from coal
RT   tar-contaminated sediment, reveals physiological and metabolic versatility
RT   and evolution through extensive horizontal gene transfer.";
RL   Environ. Microbiol. 11:2253-2270(2009).
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; CP000529; ABM37731.1; -; Genomic_DNA.
DR   RefSeq; WP_011801809.1; NC_008781.1.
DR   AlphaFoldDB; A1VQ03; -.
DR   SMR; A1VQ03; -.
DR   STRING; 365044.Pnap_2424; -.
DR   EnsemblBacteria; ABM37731; ABM37731; Pnap_2424.
DR   KEGG; pna:Pnap_2424; -.
DR   eggNOG; COG0665; Bacteria.
DR   eggNOG; COG4121; Bacteria.
DR   HOGENOM; CLU_022427_1_0_4; -.
DR   OMA; NFLCAWQ; -.
DR   OrthoDB; 912110at2; -.
DR   Proteomes; UP000000644; Chromosome.
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; SSF51905; SSF51905; 1.
DR   TIGRFAMs; TIGR03197; MnmC_Cterm; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; FAD; Flavoprotein; Methyltransferase; Multifunctional enzyme;
KW   Oxidoreductase; Reference proteome; S-adenosyl-L-methionine; Transferase;
KW   tRNA processing.
FT   CHAIN           1..637
FT                   /note="tRNA 5-methylaminomethyl-2-thiouridine biosynthesis
FT                   bifunctional protein MnmC"
FT                   /id="PRO_0000348007"
FT   REGION          1..232
FT                   /note="tRNA (mnm(5)s(2)U34)-methyltransferase"
FT   REGION          1..20
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          255..637
FT                   /note="FAD-dependent cmnm(5)s(2)U34 oxidoreductase"
SQ   SEQUENCE   637 AA;  68361 MW;  A571F6B3921BA968 CRC64;
     MSERIEWLED GTAGGSPYSP RFGDRYRSEL GGLEQAREVF LKGCGLPNAW AGQPQWCVLE
     TGFGLGLNFL VTWAAWKADP LRPRLLHFVS TEAYPASADD VLRSALTHPE LIPFAEQLKR
     QLWGLLPGVH RLVFEGGQVL LTLCIGDTKA MLREPSFEAD SVYLDGFSPQ RNPDIWDVHT
     FKAVARCCRR GTRIATWTIA RSVRDALAQC GFVVKKVPGT PPKRDNLQGE YQPAWEVKKS
     RITPERKAPA RCIVIGAGLA GSAVAASLAR RGWQVTVLDA ASTPAAGASG LPAGVLAPHV
     SPDDSLLSRL SRSGIRAMLQ QADALLQTNI DWSPTGVLEH CVEHARQLPA AWHPGQALAD
     AAGDWTRPAT SEQLKHCGLS PETPALWHVQ AGWIKPARLV QAWLSSPGVS WHGNAAVSQL
     VRQAGAWQAL DATGNELASA ELVVLAAGHG SRALSEIASP QAGRPLALQA IRGQASWGLH
     APGTEQAMPA FPVNGHGSLV PRVPLEQGLA WVTGSSFERD NTSPQLRPED EQHNFGKLKT
     LLPAAAQALT AQFESGQVRG WTGVRCATPS RLPALGPLEN AQDVWVCSGM GSRGLTFAAL
     CAELLAARLH GEPLPVELRQ ADALLPQYAT RLQPSGS
 
 
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