ID D1PMD8_9FIRM Unreviewed; 780 AA.
AC D1PMD8;
DT 09-FEB-2010, integrated into UniProtKB/TrEMBL.
DT 09-FEB-2010, sequence version 1.
DT 27-MAR-2024, entry version 53.
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=SUBVAR_05498 {ECO:0000313|EMBL:EFB75723.1};
OS Subdoligranulum variabile DSM 15176.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Oscillospiraceae;
OC Subdoligranulum.
OX NCBI_TaxID=411471 {ECO:0000313|EMBL:EFB75723.1, ECO:0000313|Proteomes:UP000003438};
RN [1] {ECO:0000313|EMBL:EFB75723.1, ECO:0000313|Proteomes:UP000003438}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 15176 {ECO:0000313|EMBL:EFB75723.1,
RC ECO:0000313|Proteomes:UP000003438};
RA Weinstock G., Sodergren E., Clifton S., Fulton L., Fulton B., Courtney L.,
RA Fronick C., Harrison M., Strong C., Farmer C., Delahaunty K., Markovic C.,
RA Hall O., Minx P., Tomlinson C., Mitreva M., Nelson J., Hou S., Wollam A.,
RA Pepin K.H., Johnson M., Bhonagiri V., Nash W.E., Warren W., Chinwalla A.,
RA Mardis E.R., Wilson R.K.;
RL Submitted (DEC-2009) 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:EFB75723.1}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; ACBY02000023; EFB75723.1; -; Genomic_DNA.
DR AlphaFoldDB; D1PMD8; -.
DR STRING; 411471.SUBVAR_05498; -.
DR eggNOG; COG0646; Bacteria.
DR eggNOG; COG1410; Bacteria.
DR HOGENOM; CLU_004914_0_2_9; -.
DR OrthoDB; 9803687at2; -.
DR UniPathway; UPA00051; UER00081.
DR Proteomes; UP000003438; 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 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:UP000003438};
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..266
FT /note="Hcy-binding"
FT /evidence="ECO:0000259|PROSITE:PS50970"
FT DOMAIN 294..538
FT /note="Pterin-binding"
FT /evidence="ECO:0000259|PROSITE:PS50972"
FT DOMAIN 564..657
FT /note="B12-binding N-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51337"
FT DOMAIN 660..780
FT /note="B12-binding"
FT /evidence="ECO:0000259|PROSITE:PS51332"
FT BINDING 187
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
FT BINDING 251
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
FT BINDING 252
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
SQ SEQUENCE 780 AA; 81711 MW; 2C9CD3DDBAFE3292 CRC64;
MGTQLQKHGL KPGQKPELAA LEMPETVTAI HAAYAAAGAD LLLANTFGAN ARKLAETGYS
VAEVVKASLH CARTAAEPTG ALVGLDIGPL GELLAPAGTL PFEDAYTAFA EIVQAGVEAG
ADFVFLETMT DLYELKAAIL AAKEHSRLPV FVSMSFESRG RTFTGCTVES YGATAAGLGA
DAIGINCSLG PAEILPFAQR LCRTVPAGTP VFVKPNAGLP NPDGSYNLDA EEFAREMEAY
AAIGVSMVGG CCGTTPEYIA RLRDVFSSLT PAQKIPLRRS CLCTPVRFVE VDGITVVGER
INPTGKKRLQ QALREGDSAY PCTQAVAQAE AGAEVLDVNA GLPGIDEAAT LERLVRDLQA
VTDLPLQLDS SNPEALARAL RVYNGKPIVN SVNGEQKTLE AILPLCKKYG AAVVGLTMDE
QGIPSSAEGR FAIAQKIVEA AAAVGIPRED IYIDCLTLTA SAQQEGAAQT LAALTRCKEE
LGVRTILGVS NISFGLPCRG YLNTTFLTMA MAAGLDLAIM NPNTPEMMAA VRAYRVLTAQ
DKQSAAYVAA YADVQIQTQQ VSKNVEAAPA QSSEDPLFDA VRRGLKAEAH EAAEAALAVK
APLEVVNASL IPALDVVGDG FEKGTIFLPQ LLQAATAAQA AFEAVKAKIA AQGQPQTTGK
GKIVVATVKG DVHDIGKNIV RVILENYGYD VLDLGRDVPP ERVVEAVRTT GAKLVGLSAL
MTTTVPNMKA TIDALHEANL DCQVWVGGAV LTPGYAKEIG ADFYCKDAKA SADLAKQILG
//
