MEND_BACTN
ID MEND_BACTN Reviewed; 555 AA.
AC Q89YN0;
DT 01-JUL-2008, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 03-AUG-2022, entry version 113.
DE RecName: Full=2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase {ECO:0000255|HAMAP-Rule:MF_01659};
DE Short=SEPHCHC synthase {ECO:0000255|HAMAP-Rule:MF_01659};
DE EC=2.2.1.9 {ECO:0000255|HAMAP-Rule:MF_01659};
DE AltName: Full=Menaquinone biosynthesis protein MenD {ECO:0000255|HAMAP-Rule:MF_01659};
GN Name=menD {ECO:0000255|HAMAP-Rule:MF_01659}; OrderedLocusNames=BT_4701;
OS Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / JCM 5827 /
OS CCUG 10774 / NCTC 10582 / VPI-5482 / E50).
OC Bacteria; Bacteroidetes; Bacteroidia; Bacteroidales; Bacteroidaceae;
OC Bacteroides.
OX NCBI_TaxID=226186;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29148 / DSM 2079 / JCM 5827 / CCUG 10774 / NCTC 10582 /
RC VPI-5482 / E50;
RX PubMed=12663928; DOI=10.1126/science.1080029;
RA Xu J., Bjursell M.K., Himrod J., Deng S., Carmichael L.K., Chiang H.C.,
RA Hooper L.V., Gordon J.I.;
RT "A genomic view of the human-Bacteroides thetaiotaomicron symbiosis.";
RL Science 299:2074-2076(2003).
CC -!- FUNCTION: Catalyzes the thiamine diphosphate-dependent decarboxylation
CC of 2-oxoglutarate and the subsequent addition of the resulting succinic
CC semialdehyde-thiamine pyrophosphate anion to isochorismate to yield 2-
CC succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylate (SEPHCHC).
CC {ECO:0000255|HAMAP-Rule:MF_01659}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2-oxoglutarate + H(+) + isochorismate = 5-enolpyruvoyl-6-
CC hydroxy-2-succinyl-cyclohex-3-ene-1-carboxylate + CO2;
CC Xref=Rhea:RHEA:25593, ChEBI:CHEBI:15378, ChEBI:CHEBI:16526,
CC ChEBI:CHEBI:16810, ChEBI:CHEBI:29780, ChEBI:CHEBI:58818; EC=2.2.1.9;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01659};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01659};
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01659};
CC -!- COFACTOR:
CC Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_01659};
CC Note=Binds 1 thiamine pyrophosphate per subunit. {ECO:0000255|HAMAP-
CC Rule:MF_01659};
CC -!- PATHWAY: Quinol/quinone metabolism; 1,4-dihydroxy-2-naphthoate
CC biosynthesis; 1,4-dihydroxy-2-naphthoate from chorismate: step 2/7.
CC {ECO:0000255|HAMAP-Rule:MF_01659}.
CC -!- PATHWAY: Quinol/quinone metabolism; menaquinone biosynthesis.
CC {ECO:0000255|HAMAP-Rule:MF_01659}.
CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01659}.
CC -!- SIMILARITY: Belongs to the TPP enzyme family. MenD subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_01659}.
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DR EMBL; AE015928; AAO79806.1; -; Genomic_DNA.
DR RefSeq; NP_813612.1; NC_004663.1.
DR RefSeq; WP_008766783.1; NC_004663.1.
DR AlphaFoldDB; Q89YN0; -.
DR SMR; Q89YN0; -.
DR STRING; 226186.BT_4701; -.
DR PaxDb; Q89YN0; -.
DR PRIDE; Q89YN0; -.
DR DNASU; 1075703; -.
DR EnsemblBacteria; AAO79806; AAO79806; BT_4701.
DR GeneID; 60925873; -.
DR KEGG; bth:BT_4701; -.
DR PATRIC; fig|226186.12.peg.4780; -.
DR eggNOG; COG1165; Bacteria.
DR HOGENOM; CLU_006051_3_0_10; -.
DR InParanoid; Q89YN0; -.
DR OMA; PAAWIGQ; -.
DR UniPathway; UPA00079; -.
DR UniPathway; UPA01057; UER00164.
DR Proteomes; UP000001414; Chromosome.
DR GO; GO:0070204; F:2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylic-acid synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0030145; F:manganese ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0030976; F:thiamine pyrophosphate binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009234; P:menaquinone biosynthetic process; IEA:UniProtKB-UniRule.
DR HAMAP; MF_01659; MenD; 1.
DR InterPro; IPR004433; MenaQ_synth_MenD.
DR InterPro; IPR032264; MenD_middle.
DR InterPro; IPR029061; THDP-binding.
DR InterPro; IPR012001; Thiamin_PyroP_enz_TPP-bd_dom.
DR InterPro; IPR011766; TPP_enzyme-bd_C.
DR PANTHER; PTHR42916; PTHR42916; 1.
DR Pfam; PF02775; TPP_enzyme_C; 1.
DR Pfam; PF16582; TPP_enzyme_M_2; 1.
DR Pfam; PF02776; TPP_enzyme_N; 1.
DR PIRSF; PIRSF004983; MenD; 1.
DR SUPFAM; SSF52518; SSF52518; 2.
DR TIGRFAMs; TIGR00173; menD; 1.
PE 3: Inferred from homology;
KW Magnesium; Manganese; Menaquinone biosynthesis; Metal-binding;
KW Reference proteome; Thiamine pyrophosphate; Transferase.
FT CHAIN 1..555
FT /note="2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-
FT carboxylate synthase"
FT /id="PRO_0000341716"
SQ SEQUENCE 555 AA; 62469 MW; 7BF5CB2B0943A6B8 CRC64;
MYSDKKNILQ LVALLEAHGI TKVVLCPGSR NAPIVHTLST HPGFTCYAMT DERSAGYFAI
GLALNGGHPA AVCCTSGTAL LNLHPAVAEA YYQNIPLVVI SADRPAAWIG QMAGQTLPQP
GVFQTLVKKS VNLPEIQTEE DEWYCNRLVN EALLETNHHG KGPVHINIPI SEPLFQFTVE
SLPEVRVITR YQGLNVYDRD YNDLIERLNR YQKRMIIVGQ MNLIYLFEKR HTKLLYKHFV
WLTEHIGNQT VPGIPVKNFD AALYAMPEEK TGQMTPELLI TYGGHVVSKR LKKYLRQHPP
KEHWHVSADG EVVDLYGSLT TVIEMDPFEF LEKIAPLLDN RVPEYPRVWE NYCKTIPEPE
FGYSEMSAIG ALIKALPESC ALHLANSSVI RYAQLYQVPS TIEVCCNRGT SGIEGSLSTA
VGYAAGSDKL NFIVIGDLSF FYDMNALWNI NVRPNLRILL LNNGGGEIFH TLPGLDMSGT
SHKYITAVHK TSAKGWAEER GFLYQRVENE EQLAEAMKTF TQPEAMEQPV LMEVFSNKNK
DARILKDYYH QLKQK
