ID R6WI24_9FIRM Unreviewed; 809 AA.
AC R6WI24;
DT 24-JUL-2013, integrated into UniProtKB/TrEMBL.
DT 24-JUL-2013, sequence version 1.
DT 27-MAR-2024, entry version 30.
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 ORFNames=BN605_02027 {ECO:0000313|EMBL:CDD06474.1};
OS Dorea sp. CAG:317.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Lachnospiraceae; Dorea.
OX NCBI_TaxID=1262873 {ECO:0000313|EMBL:CDD06474.1, ECO:0000313|Proteomes:UP000018262};
RN [1] {ECO:0000313|EMBL:CDD06474.1, ECO:0000313|Proteomes:UP000018262}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MGS:317 {ECO:0000313|Proteomes:UP000018262};
RA Nielsen H.B., Almeida M., Juncker A.S., Rasmussen S., Li J., Sunagawa S.,
RA Plichta D., Gautier L., Le Chatelier E., Peletier E., Bonde I., Nielsen T.,
RA Manichanh C., Arumugam M., Batto J., Santos M.B.Q.D., Blom N., Borruel N.,
RA Burgdorf K.S., Boumezbeur F., Casellas F., Dore J., Guarner F., Hansen T.,
RA Hildebrand F., Kaas R.S., Kennedy S., Kristiansen K., Kultima J.R.,
RA Leonard P., Levenez F., Lund O., Moumen B., Le Paslier D., Pons N.,
RA Pedersen O., Prifti E., Qin J., Raes J., Tap J., Tims S., Ussery D.W.,
RA Yamada T., MetaHit consortium, Renault P., Sicheritz-Ponten T., Bork P.,
RA Wang J., Brunak S., Ehrlich S.D.;
RT "Dependencies among metagenomic species, viruses, plasmids and units of
RT genetic variation.";
RL Submitted (NOV-2012) to the EMBL/GenBank/DDBJ databases.
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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:CDD06474.1}.
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DR EMBL; CBGJ010000005; CDD06474.1; -; Genomic_DNA.
DR AlphaFoldDB; R6WI24; -.
DR STRING; 1262873.BN605_02027; -.
DR UniPathway; UPA00051; UER00081.
DR Proteomes; UP000018262; Unassembled WGS sequence.
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:UP000018262};
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..288
FT /note="Hcy-binding"
FT /evidence="ECO:0000259|PROSITE:PS50970"
FT DOMAIN 321..575
FT /note="Pterin-binding"
FT /evidence="ECO:0000259|PROSITE:PS50972"
FT DOMAIN 584..677
FT /note="B12-binding N-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51337"
FT DOMAIN 679..808
FT /note="B12-binding"
FT /evidence="ECO:0000259|PROSITE:PS51332"
FT BINDING 208
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
FT BINDING 273
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
FT BINDING 274
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
SQ SEQUENCE 809 AA; 88521 MW; 4CA0FD15FF3B8BCE CRC64;
MLKERLGKEL LFFDGGTGTL LQEKGLKPGE LPETWNVEHA EDVVSIHRRY FEAGSDIVLA
NTFGANALKY TDSKYKLEEI ITHAIENVKK ASSLGVQDGR ETYVALDVGP TGKLLKPMGD
LSFDEAYDTF KEMMMIGEKA GADLIHIETM SDTYEVKAAV LAAKENTSLP VFVTMIFDEK
GKLLTGGNVP AVVALLEGLR VDALGINCGL GPEQMLPILD EIMEYTSLPV IVKPNAGLPK
QRNGEVYYDV EPEAFAGYME EIVKRGATLI GGCCGTTPSH IKAMTARLKK SSAFEERKRT
GTTQKTIVCS YGNAVILGDC PVIIGERINP TGKKKFKQAL KEHDLDYILR EGIAQQDAGA
HILDVNVGLP DIDEVKMMRE AVTELQSVTS LPLQIDTVNI EAMETAMRYY NGKPMVNSVN
GKQESMDAVF PLIQKYGGAV VALTLDEDGI PSDAAGRVRI AGKIIEEAQK YGISRRDIVV
DVLAMTISSE PEGAKTTLEA LKRVSEEYGV CTVLGVSNIS FGLPYRPAVN SNFYTMAMQQ
GLSAGIINPL SEDMMRSYYS YCALMNYDKN CEAYIEKYGN QTPVLAGGTN APSEISLAEA
IRKGLKEEAH HGTRELLKAK EPLTIINEEM IPALDQVGKG FEKGTVFLPQ LLMSADAAKI
AFAVLKDEME KSGKKQEKKE KVILATVKGD IHDIGKNIVK VLLENYGFTV IDLGKDVVPE
VIVETAIKEE AELVGLSALM TTTVVSMEDT IKLLRKLKPG CKVMVGGAVL NQEYADMIGA
DFYGKDAMQS VYYAQRVLKK EKNRETEEK
//
