ID A0A1I6B4V9_9BACI Unreviewed; 584 AA.
AC A0A1I6B4V9;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 02-APR-2025, entry version 25.
DE RecName: Full=2-succinyl-5-enolpyruvyl-6-hydroxy-3-cyclohexene-1-carboxylate synthase {ECO:0000256|HAMAP-Rule:MF_01659};
DE Short=SEPHCHC synthase {ECO:0000256|HAMAP-Rule:MF_01659};
DE EC=2.2.1.9 {ECO:0000256|HAMAP-Rule:MF_01659};
DE AltName: Full=Menaquinone biosynthesis protein MenD {ECO:0000256|HAMAP-Rule:MF_01659};
GN Name=menD {ECO:0000256|HAMAP-Rule:MF_01659};
GN ORFNames=SAMN04488577_1386 {ECO:0000313|EMBL:SFQ75953.1};
OS Bacillus sp. cl95.
OC Bacteria; Bacillati; Bacillota; Bacilli; Bacillales; Bacillaceae; Bacillus.
OX NCBI_TaxID=1761761 {ECO:0000313|EMBL:SFQ75953.1, ECO:0000313|Proteomes:UP000199578};
RN [1] {ECO:0000313|EMBL:SFQ75953.1, ECO:0000313|Proteomes:UP000199578}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CL95 {ECO:0000313|EMBL:SFQ75953.1,
RC ECO:0000313|Proteomes:UP000199578};
RA de Groot N.N.;
RL Submitted (OCT-2016) to the EMBL/GenBank/DDBJ databases.
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:0000256|HAMAP-Rule:MF_01659}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=isochorismate + 2-oxoglutarate + H(+) = 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:0000256|HAMAP-Rule:MF_01659};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01659};
CC Name=Mn(2+); Xref=ChEBI:CHEBI:29035;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01659};
CC -!- COFACTOR:
CC Name=thiamine diphosphate; Xref=ChEBI:CHEBI:58937;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_01659};
CC Note=Binds 1 thiamine pyrophosphate per subunit. {ECO:0000256|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:0000256|HAMAP-Rule:MF_01659}.
CC -!- PATHWAY: Quinol/quinone metabolism; menaquinone biosynthesis.
CC {ECO:0000256|HAMAP-Rule:MF_01659}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01659}.
CC -!- SIMILARITY: Belongs to the TPP enzyme family. MenD subfamily.
CC {ECO:0000256|HAMAP-Rule:MF_01659}.
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DR EMBL; FOYF01000002; SFQ75953.1; -; Genomic_DNA.
DR RefSeq; WP_090830710.1; NZ_FOYF01000002.1.
DR AlphaFoldDB; A0A1I6B4V9; -.
DR STRING; 1761761.SAMN04488577_1386; -.
DR OrthoDB; 9791859at2; -.
DR UniPathway; UPA00079; -.
DR UniPathway; UPA01057; UER00164.
DR Proteomes; UP000199578; Unassembled WGS sequence.
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 CDD; cd07037; TPP_PYR_MenD; 1.
DR CDD; cd02009; TPP_SHCHC_synthase; 1.
DR Gene3D; 3.40.50.970; -; 2.
DR Gene3D; 3.40.50.1220; TPP-binding domain; 1.
DR HAMAP; MF_01659; MenD; 1.
DR InterPro; IPR029035; DHS-like_NAD/FAD-binding_dom.
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_TPP-bd.
DR NCBIfam; TIGR00173; menD; 1.
DR PANTHER; PTHR42916; 2-SUCCINYL-5-ENOLPYRUVYL-6-HYDROXY-3-CYCLOHEXENE-1-CARBOXYLATE SYNTHASE; 1.
DR PANTHER; PTHR42916:SF1; PROTEIN PHYLLO, CHLOROPLASTIC; 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; SSF52467; DHS-like NAD/FAD-binding domain; 1.
DR SUPFAM; SSF52518; Thiamin diphosphate-binding fold (THDP-binding); 2.
PE 3: Inferred from homology;
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_01659};
KW Manganese {ECO:0000256|ARBA:ARBA00023211, ECO:0000256|HAMAP-Rule:MF_01659};
KW Menaquinone biosynthesis {ECO:0000256|ARBA:ARBA00022428, ECO:0000256|HAMAP-
KW Rule:MF_01659};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW Rule:MF_01659}; Reference proteome {ECO:0000313|Proteomes:UP000199578};
KW Thiamine pyrophosphate {ECO:0000256|ARBA:ARBA00023052, ECO:0000256|HAMAP-
KW Rule:MF_01659};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_01659}.
FT DOMAIN 13..124
FT /note="Thiamine pyrophosphate enzyme N-terminal TPP-
FT binding"
FT /evidence="ECO:0000259|Pfam:PF02776"
FT DOMAIN 212..404
FT /note="Menaquinone biosynthesis protein MenD middle"
FT /evidence="ECO:0000259|Pfam:PF16582"
FT DOMAIN 435..553
FT /note="Thiamine pyrophosphate enzyme TPP-binding"
FT /evidence="ECO:0000259|Pfam:PF02775"
SQ SEQUENCE 584 AA; 64791 MW; 18F1D36F5794682A CRC64;
MNHQEALTAY IAAFVAELVN TGIKDVVVSP GSRSTPMALV MAEHPGLNVH IQVDERSAAF
FALGIAKSTG KPVALLCTSG TAAANYYPAI IEAYYSRVPL IVLTADRPHE LRDVGAPQAI
DQIHLYGKHV KWFVEMALPE NNVEMIRYAR TVCARAAATA SMAPSGPVHL NFPFREPLIP
NLQKEGLFEF QDRDKSYVNI NIGHLELNQY EAENLADLLN SCNNGIIVCG AIDHPGFAEA
VTRLAKHLNF PILADPLSQL RSGKHDGVNI IDCYDTFLRN GDAKNELRPE VIIRFGAIPV
SKALTIFLKE NHEVHQFVVD GGAGWRDPSV LSTHMIYADE TLFCEKMVAL TSEKGASPYL
EKWKKANLIT AEQLQSVRDI TDMSESKLFV QLNDLLPENA TLFVSNSMPI RDLDTFFHIN
RKNIKVMANR GVNGIDGIIS TALGASLYAQ PLFLVVGDLT FFHDMNGLLA AKLYKLDITI
ILINNNGGGI FSFLPQSEHP AHFELLFGTP LGIEFEHVVK MYKGTHEKIT DWEHFAASLK
KLSKESGLKV LEIVTNRDSN LEQHRELWNS VSREISLWTH GGCR
//
