ID E2ZJF6_9FIRM Unreviewed; 812 AA.
AC E2ZJF6;
DT 11-JAN-2011, integrated into UniProtKB/TrEMBL.
DT 11-JAN-2011, sequence version 1.
DT 27-MAR-2024, entry version 56.
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=HMPREF9436_01804 {ECO:0000313|EMBL:EFQ06675.1};
OS Faecalibacterium cf. prausnitzii KLE1255.
OC Bacteria; Bacillota; Clostridia; Eubacteriales; Oscillospiraceae;
OC Faecalibacterium.
OX NCBI_TaxID=748224 {ECO:0000313|EMBL:EFQ06675.1, ECO:0000313|Proteomes:UP000006028};
RN [1] {ECO:0000313|EMBL:EFQ06675.1, ECO:0000313|Proteomes:UP000006028}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KLE1255 {ECO:0000313|EMBL:EFQ06675.1,
RC ECO:0000313|Proteomes:UP000006028};
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., Hou S., Chen J., Wollam A.,
RA Pepin K.H., Johnson M., Bhonagiri V., Zhang X., Suruliraj S., Warren W.,
RA Chinwalla A., Mardis E.R., Wilson R.K.;
RL Submitted (AUG-2010) 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:EFQ06675.1}.
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DR EMBL; AECU01000146; EFQ06675.1; -; Genomic_DNA.
DR AlphaFoldDB; E2ZJF6; -.
DR STRING; 748224.HMPREF9436_01804; -.
DR eggNOG; COG0646; Bacteria.
DR eggNOG; COG1410; Bacteria.
DR HOGENOM; CLU_004914_0_2_9; -.
DR BioCyc; FCF748224-HMP:GTSS-1861-MONOMER; -.
DR UniPathway; UPA00051; UER00081.
DR Proteomes; UP000006028; 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}; 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..285
FT /note="Hcy-binding"
FT /evidence="ECO:0000259|PROSITE:PS50970"
FT DOMAIN 313..557
FT /note="Pterin-binding"
FT /evidence="ECO:0000259|PROSITE:PS50972"
FT DOMAIN 595..688
FT /note="B12-binding N-terminal"
FT /evidence="ECO:0000259|PROSITE:PS51337"
FT DOMAIN 690..812
FT /note="B12-binding"
FT /evidence="ECO:0000259|PROSITE:PS51332"
FT BINDING 205
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00333"
FT BINDING 270
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"
SQ SEQUENCE 812 AA; 85711 MW; D6AFADDCE998A027 CRC64;
MQASELFKQS NTILLDGGMG TMLQASGLKL GAKPEELNIT NPELIESIHA KYAAAGSRIV
NANTFGASAH KLAGSAYSLE EIIAAGIANC KRACAPYGAL TALDVGPLGE LLEPSGTLAF
EDAVSEYARI VRAGAAAGAD LIFFETFTDL YELKAALLAA KENSGLPILA SMSFEAGGRT
FTGCTVESFG VTARGLGANA VGINCSLGPK EIFPMAKRLA EAVPGDFPVF VKPNAGLPRA
DGSGYDITPQ LFAMEMKPYR DLHLFAAGGC CGTTPEFIKL LNSVFAGCVP GRSAHKMPSV
LCTPVNFVNV DGITVVGERI NPTGKKRFQQ ALREEDMNYV LEQAVSQVEA GAQVLDVNVG
APGVDEPALM PKVVKALQSV TSLPLQLDSS NVEALENGLR VYNGKPIVNS TNGEQEKLDA
ILPLCKKYGA AIVGLAIDER GILPAAEDRV AIARRITEAA LAVGIPREDI YIDCLTLTAS
AQQKDVLATV QALEACKKEL GVRTILGVSN ISFGLPCRPY LNTTFLTMAM YAGLDLAIMN
PSSEEMMAAV YAYNVLTNRD PQSTKYIERY ADRVPASAAL KQAAQTVPAA SASASGESAE
LTGPYALLMK AVEKGLKGDA AAQTKALLAE KQPLEVVDEA LIPALDIVGA KYEKGTLFLP
QLLQAASAAQ SAFEEIKNVI AQKGEGSASK GRIVLATVKG DVHDIGKNIV KVILENYGFE
VIDLGRDVPV ETVVNTVREK NVHLVGLSAL MTTTLKSMEE TIAALHEAGL DCKIMVGGAV
LTPEYAEKIG ADWYAKDAKR SADIAKEFFG AQ
//
