ID E6SH73_THEM7 Unreviewed; 816 AA.
AC E6SH73;
DT 08-MAR-2011, integrated into UniProtKB/TrEMBL.
DT 08-MAR-2011, sequence version 1.
DT 27-MAR-2024, entry version 74.
DE RecName: Full=5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferase {ECO:0000256|HAMAP-Rule:MF_00172};
DE EC=2.1.1.14 {ECO:0000256|HAMAP-Rule:MF_00172};
DE AltName: Full=Cobalamin-independent methionine synthase {ECO:0000256|HAMAP-Rule:MF_00172};
DE AltName: Full=Methionine synthase, vitamin-B12 independent isozyme {ECO:0000256|HAMAP-Rule:MF_00172};
GN Name=metE {ECO:0000256|HAMAP-Rule:MF_00172};
GN OrderedLocusNames=Tmar_1628 {ECO:0000313|EMBL:ADU51737.1};
OS Thermaerobacter marianensis (strain ATCC 700841 / DSM 12885 / JCM 10246 /
OS 7p75a).
OC Bacteria; Bacillota; Clostridia; Eubacteriales;
OC Clostridiales Family XVII. Incertae Sedis; Thermaerobacter.
OX NCBI_TaxID=644966 {ECO:0000313|EMBL:ADU51737.1, ECO:0000313|Proteomes:UP000008915};
RN [1] {ECO:0000313|EMBL:ADU51737.1, ECO:0000313|Proteomes:UP000008915}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700841 / DSM 12885 / JCM 10246 / 7p75a
RC {ECO:0000313|Proteomes:UP000008915};
RX PubMed=21304738;
RA Han C., Gu W., Zhang X., Lapidus A., Nolan M., Copeland A., Lucas S.,
RA Del Rio T.G., Tice H., Cheng J.F., Tapia R., Goodwin L., Pitluck S.,
RA Pagani I., Ivanova N., Mavromatis K., Mikhailova N., Pati A., Chen A.,
RA Palaniappan K., Land M., Hauser L., Chang Y.J., Jeffries C.D.,
RA Schneider S., Rohde M., Goker M., Pukall R., Woyke T., Bristow J.,
RA Eisen J.A., Markowitz V., Hugenholtz P., Kyrpides N.C., Klenk H.P.,
RA Detter J.C.;
RT "Complete genome sequence of Thermaerobacter marianensis type strain
RT (7p75a).";
RL Stand. Genomic Sci. 3:337-345(2010).
RN [2] {ECO:0000313|Proteomes:UP000008915}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700841 / DSM 12885 / JCM 10246 / 7p75a
RC {ECO:0000313|Proteomes:UP000008915};
RX DOI=10.4056/sigs.1373474;
RA Han C., Gu W., Zhang X., Lapidus A., Nolan M., Copeland A., Lucas S.,
RA Glavina Del Rio T., Tice H., Cheng J., Tapia R., Goodwin L., Pitluck S.,
RA Pagani I., Ivanova N., Mavromatis K., Mikhailova N., Pati A., Chen A.,
RA Palaniappan K., Land M., Hauser L., Chang Y., Jeffries C., Schneider S.,
RA Rohde M., Goker M., Pukall R., Woyke T., Bristow J., Eisen J.,
RA Markowitz V., Hugenholtz P., Kyrpides N., Klenk H., Detter J.;
RT "Complete genome sequence of Thermaerobacter marianensis type strain
RT (7p75aT).";
RL Stand. Genomic Sci. 3:337-345(2010).
CC -!- FUNCTION: Catalyzes the transfer of a methyl group from 5-
CC methyltetrahydrofolate to homocysteine resulting in methionine
CC formation. {ECO:0000256|ARBA:ARBA00002777, ECO:0000256|HAMAP-
CC Rule:MF_00172}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=5-methyltetrahydropteroyltri-L-glutamate + L-homocysteine = L-
CC methionine + tetrahydropteroyltri-L-glutamate; Xref=Rhea:RHEA:21196,
CC ChEBI:CHEBI:57844, ChEBI:CHEBI:58140, ChEBI:CHEBI:58199,
CC ChEBI:CHEBI:58207; EC=2.1.1.14; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_00172};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00172};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000256|HAMAP-Rule:MF_00172};
CC -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via de novo
CC pathway; L-methionine from L-homocysteine (MetE route): step 1/1.
CC {ECO:0000256|ARBA:ARBA00004681, ECO:0000256|HAMAP-Rule:MF_00172}.
CC -!- SIMILARITY: Belongs to the vitamin-B12 independent methionine synthase
CC family. {ECO:0000256|ARBA:ARBA00009553, ECO:0000256|HAMAP-
CC Rule:MF_00172}.
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DR EMBL; CP002344; ADU51737.1; -; Genomic_DNA.
DR RefSeq; WP_013496038.1; NC_014831.1.
DR AlphaFoldDB; E6SH73; -.
DR STRING; 644966.Tmar_1628; -.
DR KEGG; tmr:Tmar_1628; -.
DR eggNOG; COG0620; Bacteria.
DR HOGENOM; CLU_013175_0_0_9; -.
DR OrthoDB; 244285at2; -.
DR UniPathway; UPA00051; UER00082.
DR Proteomes; UP000008915; Chromosome.
DR GO; GO:0003871; F:5-methyltetrahydropteroyltriglutamate-homocysteine S-methyltransferase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0008270; F:zinc ion binding; IEA:InterPro.
DR GO; GO:0009086; P:methionine biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0032259; P:methylation; IEA:UniProtKB-KW.
DR CDD; cd03311; CIMS_C_terminal_like; 1.
DR CDD; cd03312; CIMS_N_terminal_like; 1.
DR Gene3D; 3.20.20.210; -; 2.
DR HAMAP; MF_00172; Meth_synth; 1.
DR InterPro; IPR013215; Cbl-indep_Met_Synth_N.
DR InterPro; IPR006276; Cobalamin-indep_Met_synthase.
DR InterPro; IPR002629; Met_Synth_C/arc.
DR InterPro; IPR038071; UROD/MetE-like_sf.
DR PANTHER; PTHR30519; 5-METHYLTETRAHYDROPTEROYLTRIGLUTAMATE--HOMOCYSTEINE METHYLTRANSFERASE; 1.
DR PANTHER; PTHR30519:SF0; 5-METHYLTETRAHYDROPTEROYLTRIGLUTAMATE--HOMOCYSTEINE METHYLTRANSFERASE; 1.
DR Pfam; PF08267; Meth_synt_1; 2.
DR Pfam; PF01717; Meth_synt_2; 1.
DR SUPFAM; SSF51726; UROD/MetE-like; 2.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW Rule:MF_00172};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_00172};
KW Methionine biosynthesis {ECO:0000256|ARBA:ARBA00023167, ECO:0000256|HAMAP-
KW Rule:MF_00172};
KW Methyltransferase {ECO:0000256|ARBA:ARBA00022603, ECO:0000256|HAMAP-
KW Rule:MF_00172}; Reference proteome {ECO:0000313|Proteomes:UP000008915};
KW Repeat {ECO:0000256|HAMAP-Rule:MF_00172};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00172};
KW Zinc {ECO:0000256|ARBA:ARBA00022833, ECO:0000256|HAMAP-Rule:MF_00172}.
FT DOMAIN 4..178
FT /note="Cobalamin-independent methionine synthase MetE N-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08267"
FT DOMAIN 224..362
FT /note="Cobalamin-independent methionine synthase MetE N-
FT terminal"
FT /evidence="ECO:0000259|Pfam:PF08267"
FT DOMAIN 481..803
FT /note="Cobalamin-independent methionine synthase MetE C-
FT terminal/archaeal"
FT /evidence="ECO:0000259|Pfam:PF01717"
FT REGION 189..216
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 453..474
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 749
FT /note="Proton donor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 16..19
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 118
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 486..488
FT /ligand="L-homocysteine"
FT /ligand_id="ChEBI:CHEBI:58199"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 486..488
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 539
FT /ligand="L-homocysteine"
FT /ligand_id="ChEBI:CHEBI:58199"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 539
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 570..571
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 616
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 654
FT /ligand="L-homocysteine"
FT /ligand_id="ChEBI:CHEBI:58199"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 654
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 660
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 696
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 698
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 720
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
FT BINDING 781
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00172"
SQ SEQUENCE 816 AA; 89909 MW; CA2DDEF7F5FFED70 CRC64;
MALATNLGFP RIGAGRELKQ ALEAYWDGRI PADELRKVAA ELRRRHWRLQ REAGLDIVPA
GDFSLYDHVL DTACMVGAVP ARYGWDPETP GAEVPLDVYF AMARGTPGQG IPALEMTKWF
DTNYHYIVPE LEPGQTFRLA SRKVVEEFRE ARALGLTARP VLLGPVSFLL LAKMRDAAAA
GTVGGGAGGF GPGGRPAGSS GTDRQGPGSA PSAAGVGAGV PSDARLALLD GLLPVYGQVL
RELQAAGATW VQLDEPFLAL DLDEPVRDAY RRAYAALAQA APGLRLFLAT YFEGLRDNLD
LALGLPVHAL HLDLVRDPGQ LEQVLAAGVP PALHLSLGVV DGRNVWRTDL EAALALLERA
RDAVGPERIF VAPSCSLLHV PIDLELETAL DPEIKGWLAF AKQKLEEVAV LTRALNEGRQ
AVADALAASR AAVAARRSSP RRTRPDVQER LARLRPDDAR RPSTAPERRA RQRERLGLPL
LPTTTIGSFP QTPEVRRLRA RWRRGEIDGA AYEEGIRAEI RRVIRLQEEL GLDVLVHGEP
ERNDMVEYFA EQLEGFAFTR HGWVQSYGSR CVKPPILYGD VARPGPMTVK WITYAQSLTR
RPVKGMLTGP VTILQWSFVR DDQPREVTCR QIALAIRDEV QDLEAAGIRV IQIDEPAFRE
AMPLRRDDRE AYLAWATECF RLVTGGVRDE TQIHTHMCYS EFNDIIDAIA ALDADVILIE
ASRSGMELLD AFVEHRYPSD IGPGVYDIHS PRVPPVDEIK GLLRKAAAVL DPGQLWVNPD
CGLKTRRYQE VEPALRHMVQ AARELREEWA AVPAGR
//
