ID C8W2L3_DESAS Unreviewed; 801 AA.
AC C8W2L3;
DT 03-NOV-2009, integrated into UniProtKB/TrEMBL.
DT 03-NOV-2009, sequence version 1.
DT 27-MAR-2024, entry version 72.
DE RecName: Full=Methionine synthase {ECO:0000256|ARBA:ARBA00013998};
DE EC=2.1.1.13 {ECO:0000256|ARBA:ARBA00012032};
DE AltName: Full=5-methyltetrahydrofolate--homocysteine methyltransferase {ECO:0000256|ARBA:ARBA00031040};
GN OrderedLocusNames=Dtox_2941 {ECO:0000313|EMBL:ACV63697.1};
OS Desulfofarcimen acetoxidans (strain ATCC 49208 / DSM 771 / KCTC 5769 / VKM
OS B-1644 / 5575) (Desulfotomaculum acetoxidans).
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Peptococcaceae;
OC Desulfofarcimen.
OX NCBI_TaxID=485916 {ECO:0000313|EMBL:ACV63697.1, ECO:0000313|Proteomes:UP000002217};
RN [1] {ECO:0000313|EMBL:ACV63697.1, ECO:0000313|Proteomes:UP000002217}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 49208 / DSM 771 / VKM B-1644
RC {ECO:0000313|Proteomes:UP000002217};
RX PubMed=21304664; DOI=10.4056/sigs.39508;
RA Spring S., Lapidus A., Schroder M., Gleim D., Sims D., Meincke L.,
RA Glavina Del Rio T., Tice H., Copeland A., Cheng J.F., Lucas S., Chen F.,
RA Nolan M., Bruce D., Goodwin L., Pitluck S., Ivanova N., Mavromatis K.,
RA Mikhailova N., Pati A., Chen A., Palaniappan K., Land M., Hauser L.,
RA Chang Y.J., Jeffries C.D., Chain P., Saunders E., Brettin T., Detter J.C.,
RA Goker M., Bristow J., Eisen J.A., Markowitz V., Hugenholtz P.,
RA Kyrpides N.C., Klenk H.P., Han C.;
RT "Complete genome sequence of Desulfotomaculum acetoxidans type strain
RT (5575).";
RL Stand. Genomic Sci. 1:242-253(2009).
CC -!- FUNCTION: Catalyzes the transfer of a methyl group from methyl-
CC cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and
CC methionine. Subsequently, remethylates the cofactor using
CC methyltetrahydrofolate. {ECO:0000256|ARBA:ARBA00025552}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(6S)-5-methyl-5,6,7,8-tetrahydrofolate + L-homocysteine =
CC (6S)-5,6,7,8-tetrahydrofolate + L-methionine; Xref=Rhea:RHEA:11172,
CC ChEBI:CHEBI:18608, ChEBI:CHEBI:57453, ChEBI:CHEBI:57844,
CC ChEBI:CHEBI:58199; EC=2.1.1.13;
CC Evidence={ECO:0000256|ARBA:ARBA00001700};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|ARBA:ARBA00001947,
CC ECO:0000256|PROSITE-ProRule:PRU00333};
CC -!- COFACTOR:
CC Name=methylcob(III)alamin; Xref=ChEBI:CHEBI:28115;
CC Evidence={ECO:0000256|ARBA:ARBA00001956};
CC -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via de novo
CC pathway; L-methionine from L-homocysteine (MetH route): step 1/1.
CC {ECO:0000256|ARBA:ARBA00005178}.
CC -!- SIMILARITY: Belongs to the vitamin-B12 dependent methionine synthase
CC family. {ECO:0000256|ARBA:ARBA00010398}.
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DR EMBL; CP001720; ACV63697.1; -; Genomic_DNA.
DR RefSeq; WP_015758389.1; NC_013216.1.
DR AlphaFoldDB; C8W2L3; -.
DR STRING; 485916.Dtox_2941; -.
DR KEGG; dae:Dtox_2941; -.
DR eggNOG; COG0646; Bacteria.
DR eggNOG; COG1410; Bacteria.
DR HOGENOM; CLU_004914_0_2_9; -.
DR OrthoDB; 9803687at2; -.
DR UniPathway; UPA00051; UER00081.
DR Proteomes; UP000002217; Chromosome.
DR GO; GO:0031419; F:cobalamin binding; IEA:UniProtKB-KW.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0008705; F:methionine synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR GO; GO:0042558; P:pteridine-containing compound metabolic process; IEA:InterPro.
DR CDD; cd02070; corrinoid_protein_B12-BD; 1.
DR Gene3D; 3.40.50.280; Cobalamin-binding domain; 1.
DR Gene3D; 3.20.20.20; Dihydropteroate synthase-like; 1.
DR Gene3D; 3.20.20.330; Homocysteine-binding-like domain; 1.
DR Gene3D; 1.10.1240.10; Methionine synthase domain; 1.
DR InterPro; IPR003759; Cbl-bd_cap.
DR InterPro; IPR006158; Cobalamin-bd.
DR InterPro; IPR036724; Cobalamin-bd_sf.
DR InterPro; IPR011005; Dihydropteroate_synth-like_sf.
DR InterPro; IPR003726; HCY_dom.
DR InterPro; IPR036589; HCY_dom_sf.
DR InterPro; IPR017215; MetH_bac.
DR InterPro; IPR036594; Meth_synthase_dom.
DR InterPro; IPR000489; Pterin-binding_dom.
DR PANTHER; PTHR45833; METHIONINE SYNTHASE; 1.
DR PANTHER; PTHR45833:SF1; METHIONINE SYNTHASE; 1.
DR Pfam; PF02310; B12-binding; 1.
DR Pfam; PF02607; B12-binding_2; 1.
DR Pfam; PF00809; Pterin_bind; 1.
DR Pfam; PF02574; S-methyl_trans; 1.
DR PIRSF; PIRSF037472; DHPS_mtfrase; 1.
DR SMART; SM01018; B12-binding_2; 1.
DR SUPFAM; SSF52242; Cobalamin (vitamin B12)-binding domain; 1.
DR SUPFAM; SSF51717; Dihydropteroate synthetase-like; 1.
DR SUPFAM; SSF82282; Homocysteine S-methyltransferase; 1.
DR SUPFAM; SSF47644; Methionine synthase domain; 1.
DR PROSITE; PS51332; B12_BINDING; 1.
DR PROSITE; PS51337; B12_BINDING_NTER; 1.
DR PROSITE; PS50970; HCY; 1.
DR PROSITE; PS50972; PTERIN_BINDING; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605};
KW Cobalamin {ECO:0000256|ARBA:ARBA00022628};
KW Cobalt {ECO:0000256|ARBA:ARBA00023285};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|PROSITE-
KW ProRule:PRU00333}; Methionine biosynthesis {ECO:0000256|ARBA:ARBA00023167};
KW Methyltransferase {ECO:0000256|ARBA:ARBA00022603, ECO:0000256|PROSITE-
KW ProRule:PRU00333}; Reference proteome {ECO:0000313|Proteomes:UP000002217};
KW S-adenosyl-L-methionine {ECO:0000256|ARBA:ARBA00022691};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PROSITE-
KW ProRule:PRU00333};
KW Zinc {ECO:0000256|ARBA:ARBA00022833, ECO:0000256|PROSITE-ProRule:PRU00333}.
FT DOMAIN 1..286
FT /note="Hcy-binding"
FT /evidence="ECO:0000259|PROSITE:PS50970"
FT DOMAIN 317..561
FT /note="Pterin-binding"
FT /evidence="ECO:0000259|PROSITE:PS50972"
FT DOMAIN 586..680
FT /note="B12-binding N-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51337"
FT DOMAIN 680..801
FT /note="B12-binding"
FT /evidence="ECO:0000259|PROSITE:PS51332"
FT BINDING 206
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
FT BINDING 271
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
FT BINDING 272
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
SQ SEQUENCE 801 AA; 85944 MW; 848B45DE57E28682 CRC64;
MRFIDKLAEK ILVFDGAMGT MLQAAGLRAG ECPELINLKN PETVKNIHRQ YVKAGADIVE
TNTFGGSRLK LLEYGLADKV AEINASAVRL AKESADGQAL VALSVGPTGK LMFPNGPLTF
DEAHHVFSEQ ISAGAAAGAD MICIETMSDL GEIRAALLAA KDAAPGVPVI CSMTFEPNKR
TLMGTDPVAA VITLQALGAD IIGANCSGGP GELLEVIEEM ARYARVPLIV QPNAGMPMLE
GDRTVFPLSA AEMGEYVPKL AAAGASLIGG CCGTSPEYIR VIKERSTGLK PLPRNITPVT
AITSARQTLF IGSGHPVRIV GERINPTGRK ELSEQLRKGD MSLILREAVE QVERGANLLD
VNMGLPEIDE AALMEKAVNS LQKVISVPLQ LDSTDPKVLE AGLKAYHGKA IINSVNGKEE
SLKTILPLAK RYGACILGLA LDDKGIPKTS EGRLAAAEKI MQRALALGIP KEDIIIDSLV
LTASAQQDTA LACVECTRLV KEELGLSALL GVTNISYGLP NRSLIDNTFL AMCLAGGVDV
VIFNVENQDM VNTVRASEVL TARDKHSRNY INLFAAGEAQ GAVLEEQAVE EDRKPADCLY
RDIINGFKEN TVPLLEEVLK QGMMPLQIVD DLLVPALDEV GGKYDRGEFF LPQLMQSAEV
VQAAFARLKQ ELKVAGDSGK GTVLLATVKG DIHDIGKNIV KVLLENYGYE VVDMGKDVPP
EEIVRAAKEK DIRLIGLSAL MTTTVVFMKE TIDLLRQEKP DCKVVVGGAV LNEKYAENIR
ADFYARDARE GVAVAREVFG R
//
