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MNMC_SALCH
ID   MNMC_SALCH              Reviewed;         666 AA.
AC   Q57LX5;
DT   02-SEP-2008, integrated into UniProtKB/Swiss-Prot.
DT   02-SEP-2008, sequence version 2.
DT   03-AUG-2022, entry version 84.
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=SCH_2381;
OS   Salmonella choleraesuis (strain SC-B67).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Salmonella.
OX   NCBI_TaxID=321314;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=SC-B67;
RX   PubMed=15781495; DOI=10.1093/nar/gki297;
RA   Chiu C.-H., Tang P., Chu C., Hu S., Bao Q., Yu J., Chou Y.-Y., Wang H.-S.,
RA   Lee Y.-S.;
RT   "The genome sequence of Salmonella enterica serovar Choleraesuis, a highly
RT   invasive and resistant zoonotic pathogen.";
RL   Nucleic Acids Res. 33:1690-1698(2005).
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}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=AAX66287.1; Type=Erroneous initiation; Evidence={ECO:0000305};
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DR   EMBL; AE017220; AAX66287.1; ALT_INIT; Genomic_DNA.
DR   AlphaFoldDB; Q57LX5; -.
DR   SMR; Q57LX5; -.
DR   EnsemblBacteria; AAX66287; AAX66287; SCH_2381.
DR   KEGG; sec:SCH_2381; -.
DR   HOGENOM; CLU_022427_1_0_6; -.
DR   Proteomes; UP000000538; 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..666
FT                   /note="tRNA 5-methylaminomethyl-2-thiouridine biosynthesis
FT                   bifunctional protein MnmC"
FT                   /id="PRO_0000348021"
FT   REGION          1..245
FT                   /note="tRNA (mnm(5)s(2)U34)-methyltransferase"
FT   REGION          270..666
FT                   /note="FAD-dependent cmnm(5)s(2)U34 oxidoreductase"
SQ   SEQUENCE   666 AA;  73914 MW;  7D337601C4116461 CRC64;
     MKQYAIQPAT LEFNAEGTPV SRDFDDVYFS NDNGLEETRY VFLGGNRLAE RFPVHSHPLF
     IVAESGFGTG LNFLTLWQAF DSFRSAHPQA TLQRLHFISF EKFPLTRDDL ALAHQHWPEL
     APWAEQLQAQ WPLPLPGCHR LLLDRSRVTL DLWFGDINEL TDQLDATLNQ TVDAWFLDGF
     APAKNPDMWT PNLFNAMARL ARPGATLATF TSAGFVRRGL QEAGFTMQKR KGFGRKREML
     CGVMEQHLMP TLYAPWFYRS GSEKRETAII GGGIASALLS LALLRRGWQV TLYCADDQPA
     QGASGNRQGA LYPLLSKHDA AINRFFPTAF TFARRLYDAL PVSFDHDWCG VTQLGWDEKS
     QQKIAQMLSL ALPAELASAL NAEEAEQAVG VTTRCGGITY PAGGWLCPEQ LTRAVIALAT
     EQGLQTRFRH TLTSLVAQES RWQLRFMSGE TASHETVVLA NGHQINRFDQ TRPLPVYAVG
     GQVSHIPTTP ALSALRQVLC YDGYLTPQNP HNQQHCIGAS YHRGDESTVW REEDQRQNRQ
     RLLDCFPDAK WATEVDVSGN SARCGVRCAT RDHLPMVGNV PDYHATLTHY ADLADNKTSA
     APAPVYPGLF VLGALGSRGL CSAPLCAEIL AAQMSNEPIP LDAGTLAALN PNRLWVRKLL
     KGKAVK
 
 
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