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MNMC_SHIB3
ID   MNMC_SHIB3              Reviewed;         668 AA.
AC   B2TWA6;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   01-JUL-2008, sequence version 1.
DT   03-AUG-2022, entry version 74.
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};
GN   OrderedLocusNames=SbBS512_E2702;
OS   Shigella boydii serotype 18 (strain CDC 3083-94 / BS512).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Shigella.
OX   NCBI_TaxID=344609;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CDC 3083-94 / BS512;
RA   Rasko D.A., Rosovitz M., Maurelli A.T., Myers G., Seshadri R., Cer R.,
RA   Jiang L., Ravel J., Sebastian Y.;
RT   "Complete sequence of Shigella boydii serotype 18 strain BS512.";
RL   Submitted (MAY-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; CP001063; ACD06927.1; -; Genomic_DNA.
DR   RefSeq; WP_000683794.1; NC_010658.1.
DR   AlphaFoldDB; B2TWA6; -.
DR   SMR; B2TWA6; -.
DR   STRING; 344609.SbBS512_E2702; -.
DR   EnsemblBacteria; ACD06927; ACD06927; SbBS512_E2702.
DR   KEGG; sbc:SbBS512_E2702; -.
DR   HOGENOM; CLU_022427_1_0_6; -.
DR   OMA; NFLCAWQ; -.
DR   Proteomes; UP000001030; 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; S-adenosyl-L-methionine; Transferase; tRNA processing.
FT   CHAIN           1..668
FT                   /note="tRNA 5-methylaminomethyl-2-thiouridine biosynthesis
FT                   bifunctional protein MnmC"
FT                   /id="PRO_0000348039"
FT   REGION          1..245
FT                   /note="tRNA (mnm(5)s(2)U34)-methyltransferase"
FT   REGION          270..668
FT                   /note="FAD-dependent cmnm(5)s(2)U34 oxidoreductase"
SQ   SEQUENCE   668 AA;  74480 MW;  D803D75615E7840C CRC64;
     MKHYSIQPAN LEFNAEGTPV SRDFDDVYFS NDNGLEETRY VFLGGNQLEV RFPEHPHPLF
     VVAESGFGTG LNFLTLWQAF DQFREAHPQA QLQRLHFISF EKFPLTRADL ALAHQHWPEL
     APWAEQLQAQ WPMPLPGCHR LLLDEGRVTL DLWFGDINEL TSQLDDSLNQ KVDAWFLDGF
     APAKNPDMWT QNLFNAMARL ARPGGTLATF TSAGFVRRGL QDAGFTMQKR KGFGRKREML
     CGVMEQTLPL PCSAPWFNRT GSSKREAAII GGGIACALLS LALLRRGWQV TLYCADEAPA
     LGASGNRQGA LYPLLSKHDE ALNRFFSNAF TFARRFYDQL PVKFDHDWCG VTQLGWDEKS
     QHKITQMLSM DLPAELAVAV EANAVEQITG VATNCSGITY PQGGWLCPAE LTRNVLELAQ
     QQGLQIYYQY QLQNLSRKDD CWLLNFAGDQ QATHSVVVLA NGHQISRFSQ TSTLPVYSVA
     GQVSHIPTTP ELAELKQVLC YDGYLTPQNP ANQHHCIGAS YHRGSEDTAY SEDDQQQNRQ
     RLIDCFPQAQ WAKEVDVSDK EARCGVRCAT RDHLPMVGNV PDYEATLVEY ASLAEQKDEA
     VSAPVFDDLF MFAALGSRGL CSAPLCAEIL AAQMSDEPIP MDASTLAALN PNRLWVRKLL
     KGKAVKAG
 
 
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