ID   CMOA_GEOSM              Reviewed;         244 AA.
AC   C6E228;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   01-SEP-2009, sequence version 1.
DT   03-AUG-2022, entry version 63.
DE   RecName: Full=Carboxy-S-adenosyl-L-methionine synthase {ECO:0000255|HAMAP-Rule:MF_01589};
DE            Short=Cx-SAM synthase {ECO:0000255|HAMAP-Rule:MF_01589};
DE            EC=2.1.3.- {ECO:0000255|HAMAP-Rule:MF_01589};
GN   Name=cmoA {ECO:0000255|HAMAP-Rule:MF_01589}; OrderedLocusNames=GM21_2880;
OS   Geobacter sp. (strain M21).
OC   Bacteria; Proteobacteria; Deltaproteobacteria; Desulfuromonadales;
OC   Geobacteraceae; Geobacter; unclassified Geobacter.
OX   NCBI_TaxID=443144;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=M21;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Saunders E., Brettin T., Detter J.C.,
RA   Han C., Larimer F., Land M., Hauser L., Kyrpides N., Ovchinnikova G.,
RA   Lovley D.;
RT   "Complete sequence of Geobacter sp. M21.";
RL   Submitted (JUL-2009) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the conversion of S-adenosyl-L-methionine (SAM) to
CC       carboxy-S-adenosyl-L-methionine (Cx-SAM). {ECO:0000255|HAMAP-
CC       Rule:MF_01589}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=prephenate + S-adenosyl-L-methionine = 3-phenylpyruvate +
CC         carboxy-S-adenosyl-L-methionine + H2O; Xref=Rhea:RHEA:51692,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:18005, ChEBI:CHEBI:29934,
CC         ChEBI:CHEBI:59789, ChEBI:CHEBI:134278; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01589};
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01589}.
CC   -!- SIMILARITY: Belongs to the class I-like SAM-binding methyltransferase
CC       superfamily. Cx-SAM synthase family. {ECO:0000255|HAMAP-Rule:MF_01589}.
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DR   EMBL; CP001661; ACT18912.1; -; Genomic_DNA.
DR   RefSeq; WP_015838136.1; NC_012918.1.
DR   AlphaFoldDB; C6E228; -.
DR   SMR; C6E228; -.
DR   STRING; 443144.GM21_2880; -.
DR   EnsemblBacteria; ACT18912; ACT18912; GM21_2880.
DR   KEGG; gem:GM21_2880; -.
DR   eggNOG; COG4106; Bacteria.
DR   HOGENOM; CLU_078475_0_0_7; -.
DR   OMA; MIELYYL; -.
DR   GO; GO:0016743; F:carboxyl- or carbamoyltransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:1904047; F:S-adenosyl-L-methionine binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0002098; P:tRNA wobble uridine modification; IEA:InterPro.
DR   Gene3D; 3.40.50.150; -; 1.
DR   HAMAP; MF_01589; Cx_SAM_synthase; 1.
DR   InterPro; IPR005271; CmoA.
DR   InterPro; IPR041698; Methyltransf_25.
DR   InterPro; IPR029063; SAM-dependent_MTases_sf.
DR   PANTHER; PTHR43861:SF2; PTHR43861:SF2; 1.
DR   Pfam; PF13649; Methyltransf_25; 1.
DR   PIRSF; PIRSF006325; MeTrfase_bac; 1.
DR   SUPFAM; SSF53335; SSF53335; 1.
DR   TIGRFAMs; TIGR00740; TIGR00740; 1.
PE   3: Inferred from homology;
KW   S-adenosyl-L-methionine; Transferase.
FT   CHAIN           1..244
FT                   /note="Carboxy-S-adenosyl-L-methionine synthase"
FT                   /id="PRO_1000215637"
FT   BINDING         40
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01589"
FT   BINDING         65..67
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01589"
FT   BINDING         90..91
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01589"
FT   BINDING         119..120
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01589"
FT   BINDING         134
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01589"
FT   BINDING         201
FT                   /ligand="S-adenosyl-L-methionine"
FT                   /ligand_id="ChEBI:CHEBI:59789"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01589"
SQ   SEQUENCE   244 AA;  27300 MW;  3DA6BAB2D5148500 CRC64;
     MTRKTDDIFA APLQEMIDFK FDERVVAVFP DMIQRSVPGY GMIISNIGIL AAKYAQPGSH
     CYDLGCSLGA ATLSMRQRIS QRDCDIIAVD NSPAMIERGR ELLARDSQPT VPVTLICADI
     QSVVIENASV VVLNFTLQFI PPEQRLALIK RIHAGLRPGG ILILSEKIAF SEPARQHFHV
     EMHHDFKRAN GYSDLEISQK RSALENVMIP ETVACHKERL QEAGFSSSEL WFQCFNFASM
     VAFK