METE_ACTPJ
ID METE_ACTPJ Reviewed; 757 AA.
AC B0BQ96;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 26-FEB-2008, sequence version 1.
DT 03-AUG-2022, entry version 82.
DE RecName: Full=5-methyltetrahydropteroyltriglutamate--homocysteine methyltransferase {ECO:0000255|HAMAP-Rule:MF_00172};
DE EC=2.1.1.14 {ECO:0000255|HAMAP-Rule:MF_00172};
DE AltName: Full=Cobalamin-independent methionine synthase {ECO:0000255|HAMAP-Rule:MF_00172};
DE AltName: Full=Methionine synthase, vitamin-B12 independent isozyme {ECO:0000255|HAMAP-Rule:MF_00172};
GN Name=metE {ECO:0000255|HAMAP-Rule:MF_00172}; OrderedLocusNames=APJL_1175;
OS Actinobacillus pleuropneumoniae serotype 3 (strain JL03).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC Pasteurellaceae; Actinobacillus.
OX NCBI_TaxID=434271;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JL03;
RX PubMed=18197260; DOI=10.1371/journal.pone.0001450;
RA Xu Z., Zhou Y., Li L., Zhou R., Xiao S., Wan Y., Zhang S., Wang K., Li W.,
RA Li L., Jin H., Kang M., Dalai B., Li T., Liu L., Cheng Y., Zhang L., Xu T.,
RA Zheng H., Pu S., Wang B., Gu W., Zhang X.L., Zhu G.-F., Wang S.,
RA Zhao G.-P., Chen H.;
RT "Genome biology of Actinobacillus pleuropneumoniae JL03, an isolate of
RT serotype 3 prevalent in China.";
RL PLoS ONE 3:E1450-E1450(2008).
CC -!- FUNCTION: Catalyzes the transfer of a methyl group from 5-
CC methyltetrahydrofolate to homocysteine resulting in methionine
CC formation. {ECO:0000255|HAMAP-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:0000255|HAMAP-
CC Rule:MF_00172};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00172};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000255|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:0000255|HAMAP-Rule:MF_00172}.
CC -!- SIMILARITY: Belongs to the vitamin-B12 independent methionine synthase
CC family. {ECO:0000255|HAMAP-Rule:MF_00172}.
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DR EMBL; CP000687; ABY69731.1; -; Genomic_DNA.
DR RefSeq; WP_012263120.1; NC_010278.1.
DR AlphaFoldDB; B0BQ96; -.
DR SMR; B0BQ96; -.
DR EnsemblBacteria; ABY69731; ABY69731; APJL_1175.
DR KEGG; apj:APJL_1175; -.
DR HOGENOM; CLU_013175_0_0_6; -.
DR OMA; KVMKGML; -.
DR OrthoDB; 577156at2; -.
DR UniPathway; UPA00051; UER00082.
DR Proteomes; UP000008547; 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 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 Pfam; PF08267; Meth_synt_1; 1.
DR Pfam; PF01717; Meth_synt_2; 1.
DR PIRSF; PIRSF000382; MeTrfase_B12_ind; 1.
DR SUPFAM; SSF51726; SSF51726; 2.
DR TIGRFAMs; TIGR01371; met_syn_B12ind; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis; Metal-binding; Methionine biosynthesis;
KW Methyltransferase; Repeat; Transferase; Zinc.
FT CHAIN 1..757
FT /note="5-methyltetrahydropteroyltriglutamate--homocysteine
FT methyltransferase"
FT /id="PRO_1000097813"
FT ACT_SITE 695
FT /note="Proton donor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 16..19
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 112
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 432..434
FT /ligand="L-homocysteine"
FT /ligand_id="ChEBI:CHEBI:58199"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 432..434
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 485
FT /ligand="L-homocysteine"
FT /ligand_id="ChEBI:CHEBI:58199"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 485
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 516..517
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 562
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 600
FT /ligand="L-homocysteine"
FT /ligand_id="ChEBI:CHEBI:58199"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 600
FT /ligand="L-methionine"
FT /ligand_id="ChEBI:CHEBI:57844"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 606
FT /ligand="5-methyltetrahydropteroyltri-L-glutamate"
FT /ligand_id="ChEBI:CHEBI:58207"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 642
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 644
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 666
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
FT BINDING 727
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_note="catalytic"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00172"
SQ SEQUENCE 757 AA; 85802 MW; FC1FDD740D930DB2 CRC64;
MTTLHILGFP RVGAKRELKF AQERYWRKEL AEQDLLDLAK ALREKNWLHQ AQADADFVTV
GDFTFYDHIL DLQVATGAIP ARFGFDSQTL SLDQYFQLAR GNKEQFAIEM TKWFDTNYHY
LVPEFQKNTT FKANSTHYVN QIREAKAAGH QVKPVIVGPL TFLWLGKEKG EAFNRFDLLK
QLVPIYFEIL TALAAEGVEW IQIDEPALAL DLPQEWLAAY QDVYAQLAKV NAKLLLATYF
GSVAEHAALL KALPVDGLHL DLVRAPEQLS AFEDYPKVLS AGVIDGRNIW RANLNRVLDV
LEPLKAKFNQ RLWIAPSCSL LHTPYDLAVE TQLQQNNPEL YRWLAFTLQK VAELQVLKQA
LNAGRSAVAE QLNDSQTAAD ARANSNVIHK AEIAQRLANL PANADKRQSP FAERIKLQNK
WLNLPLLPTT NIGSFPQTLE IRHARAAFKK GELSLADYEA AMKKEIEFVV RKQEELDLDV
LVHGEAERND MVEYFGELLD GFAFTKFGWV QSYGSRCVKP PVIYGDVTRP EPMTVRWSQY
AQSLTDKVMK GMLTGPVTIL QWSFVRNDIP RSTVCKQIGV ALSDEVLDLE KAGIKVIQID
EPAIREGLPL KRADWDAYLQ WAGEAFRLSY MGVKDDTQIH THMCYSEFND ILPAIAGLDA
DVITIETSRS DMELLTAFAD FKYPNDIGPG VYDIHSPRVP TAGEIEHLLR KALKVIPKER
LWVNPDCGLK TRGWKETIEQ LQVMVEVTKK LRAELAE
